# Copyright (c) 2007, 2021, Oracle and/or its affiliates.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is also distributed with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms, as
# designated in a particular file or component or in included license
# documentation.  The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have included with MySQL.
# This program is distributed in the hope that it will be useful,  but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
# the GNU General Public License, version 2.0, for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

import os
import re
import sys
import subprocess
import threading
import _thread
import time
import tempfile
import platform
import io

import grt

import wb_admin_export_options
import wb_common
from wb_common import to_unicode

from wb_server_management import local_run_cmd

from workbench.db_utils import QueryError, ConnectionTunnel, escape_sql_identifier
from collections import deque
from workbench.utils import Version
from workbench.log import log_warning, log_error, log_debug


from mforms import newBox, newButton, newPanel, newTextBox, newRadioButton, newLabel, newTreeView, newProgressBar, newTextEntry, newCheckBox, newScrollPanel, newTabView, newSelector
from mforms import Utilities, FileChooser
import mforms

from wb_admin_utils import weakcb, WbAdminTabBase, WbAdminValidationConnection


def local_quote_shell_token(s):
    if sys.platform.lower() == "win32":
        t = '"%s"' % s.replace('\\', '\\\\').replace('"', '\\"')
    else:
        t = '"%s"' % s.replace('\\', '\\\\').replace('"', '\\"').replace('$', '\\$')
    if t[:5] == '"\\\\\\\\':
        t = t[3:]
        t = '\"' + t
    return t


def normalize_filename(s):
    s = s.replace(":", "_").replace("/", "_").replace("\\", "_")
    return s


def get_path_to_mysqldump():
    """get path to mysqldump from options"""
    try:
        path = grt.root.wb.options.options["mysqldump"]
        if path:
            if os.path.exists(path):
                return path
            if any(os.path.exists(os.path.join(p, path)) for p in os.getenv("PATH").split(os.pathsep)):
                return path
            if path != "mysqldump":
                log_error("mysqldump path specified in configurations is invalid: %s" % path)
                return None
    except:
        return None

    if sys.platform == "darwin":
        # if path is not specified, use bundled one
        return mforms.App.get().get_executable_path("mysqldump")
    elif sys.platform == "win32":
        return mforms.App.get().get_executable_path("mysqldump.exe")
    else:
        # if path is not specified, use bundled one
        path = mforms.App.get().get_executable_path("mysqldump")
        if path:
            return path
        # just pick default
        if any(os.path.exists(os.path.join(p,"mysqldump")) for p in os.getenv("PATH").split(os.pathsep)):
            return "mysqldump"
        return None


def get_mysqldump_version():
    path = get_path_to_mysqldump()
    if not path:
        log_error("mysqldump command was not found, please install it or configure it in Edit -> Preferences -> Administration")
        return None
      
    output = io.StringIO()
    rc = local_run_cmd('"%s" --version' % path, output_handler=output.write)
    output = output.getvalue()
    
    if rc or not output:
        log_error("Error retrieving version from %s:\n%s (exit %s)"%(path, output, rc))
        return None
      
    regexp = ".*Ver ([\d.a-z]+).*"
    if ("Distrib" in output):
        regexp = ".*Distrib ([\d.a-z]+).*"
    
    s = re.match(regexp, output)
    
    if not s:
        log_error("Could not parse version number from %s:\n%s"%(path, output))
        return None
    
    version_group = s.groups()[0]
    major, minor, revision = [int(i) for i in version_group.split(".")[:3]]
    return Version(major, minor, revision)

####################################################################################################


class DumpThread(threading.Thread):
    class TaskData:
        def __init__(self, title, table_count, extra_arguments, objec_names, tables_to_ignore, make_pipe = lambda:None):
            """description, object_count, pipe_factory, extra_args, objects
            operations.append((title, len(tables), lambda schema=schema:self.dump_to_file([schema]), params, objects))"""
            self.title = title
            self.table_count = table_count
            self.extra_arguments = extra_arguments
            self.objec_names = objec_names
            self.tables_to_ignore = tables_to_ignore
            self.make_pipe = make_pipe

    def __init__(self, command, operations, pwd, owner, log_queue):
        self.owner = owner
        self.pwd = pwd
        self.logging_lock, self.log = log_queue
        self.is_import = False
        self.command = command
        self.operations = operations
        self.done = False
        self.progress = 0
        self.status_text = "Starting"
        self.error_count = 0
        self.process_handle = None
        self.abort_requested = False
        self.e = None
        threading.Thread.__init__(self)

    def process_db(self, respipe, extra_arguments, object_names, tables_to_ignore):
        pwdfilename = None
        tmpdir = None
        try:
            if '<' in self.command:
                index = self.command.find('<')
                params = [self.command[:index] + ' '.join(extra_arguments) + ' ' + self.command[index:]]
            else:
                params = [self.command] + extra_arguments

            for arg in object_names:
                params.append(local_quote_shell_token(arg))

            strcmd = " ".join(params)

            logstr = strcmd.partition("--password=")[0]

            if platform.system() == 'Windows':
                pwdfile = tempfile.NamedTemporaryFile(delete=False, suffix=".cnf")
                pwdfilename = pwdfile.name
            else:
                tmpdir = tempfile.mkdtemp()
                pwdfilename = os.path.join(tmpdir, 'extraparams.cnf')
                os.mkfifo(pwdfilename)
          
            logstr += "--defaults-file=\"" + pwdfilename + "\" "

            logstr += strcmd.partition("--password=")[2]

            log_debug("Executing command: %s\n" % logstr)
            self.print_log_message("Running: " + logstr)
            if platform.system() != 'Windows':
                try:
                    p1 = subprocess.Popen(logstr,stdout=respipe,stdin=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
                except OSError as exc:
                    log_error("Error executing command %s\n%s\n" % (logstr, exc))
                    import traceback
                    traceback.print_exc()
                    self.print_log_message("Error executing task: %s" % exc)

                pwdfile = open(pwdfilename, 'w')
            else:
                pwdfile = open(pwdfilename, 'w')
            pwdfile.write('[client]\npassword="')
            pwdfile.write(self.pwd.replace("\\", "\\\\"))
            pwdfile.write('"')

            # When there are tables to ignore they are added as ignored entries
            # On the configuration file
            if tables_to_ignore:
                pwdfile.write('\n\n[mysqldump]\n')

                for s, t in tables_to_ignore:
                    line = "ignore-table=%s.%s\n" % (s,t)
                    pwdfile.write(line)

            pwdfile.close()
            if platform.system() == 'Windows':
                try:
                    info = subprocess.STARTUPINFO()
                    info.dwFlags |= subprocess.STARTF_USESHOWWINDOW
                    info.wShowWindow = subprocess.SW_HIDE
                    # Command line can contain object names in case of export and filename in case of import
                    # Object names must be in utf-8 but filename must be encoded in the filesystem encoding,
                    # which probably isn't utf-8 in windows.
                    log_debug("Executing command: %s\n" % logstr)
                    p1 = subprocess.Popen(logstr, stdout=respipe, stdin=subprocess.PIPE, stderr=subprocess.PIPE, startupinfo=info, shell=logstr[0] != '"', encoding='utf8')
                except OSError as exc:
                    log_error("Error executing command %s\n%s\n" % (logstr, exc))
                    import traceback
                    traceback.print_exc()
                    self.print_log_message("Error executing task: %s" % exc)
                    p1 = None
#                finally:
#                    pass


            self.process_handle = p1

            while p1 and p1.poll() == None and not self.abort_requested:
                err = to_unicode(p1.stderr.read())
                if err != "":
                    log_error("Error from task: %s\n" % err)
                    self.print_log_message(err)
                    if 'Access denied for user' in err:
                        self.e = wb_common.InvalidPasswordError('Wrong username/password!')
            result = ""


        except Exception as exc:
            import traceback
            traceback.print_exc()
            log_error("Error executing task: %s\n" % exc)
            self.print_log_message("Error executing task: %s" % exc)
        finally:
            pass

        if pwdfilename:
            os.remove(pwdfilename)
        if platform.system() != 'Windows' and tmpdir:
            os.rmdir(tmpdir)

        err = to_unicode(p1.stderr.read())
        if err != "":
            result += err

        exitcode = p1.poll()
        if exitcode != 0:
            log_warning("Task exited with code %s\n" % exitcode)
            self.print_log_message("Operation failed with exitcode " + str(exitcode))
        else:
            log_debug("Task exited with code %s\n" % exitcode)
            self.print_log_message("")

        if result:
            log_debug("Task output: %s\n" % result)
            self.print_log_message(result)
        return p1.poll()

    def kill(self):
        self.abort_requested = True
        if self.process_handle:
            if platform.system() == 'Windows':
                cmd = "taskkill /F /T /PID %i" % self.process_handle.pid
                log_debug("Killing task: %s\n" % cmd)
                subprocess.Popen(cmd , shell=True)
            else:
                import signal
                try:
                    log_debug("Sending SIGTERM to task %s\n" % self.process_handle.pid)
                    os.kill(self.process_handle.pid, signal.SIGTERM)
                except OSError as exc:
                    log_error("Exception sending SIGTERM to task: %s\n" % exc)
                    self.print_log_message("kill task: %s" % str(exc))

    def print_log_message(self,message):
        if message:
            self.logging_lock.acquire()
            self.log.append(message)
            self.logging_lock.release()

    def run(self):
        try:
            self.progress = 0
            tables_processed = 0.0
            tables_total = 0.0
#            for title, count, make_pipe, args, objs in self.operations:
            for task in self.operations:
                tables_total += task.table_count or 1

#            for title, table_count, make_pipe, arguments, objects in self.operations:
            for task in self.operations:
                self.print_log_message(time.strftime('%X ') + to_unicode(task.title))

                tables_processed += task.table_count or 1
                pipe = task.make_pipe()
                exitcode = self.process_db(pipe, task.extra_arguments, task.objec_names, task.tables_to_ignore)
                if exitcode == 0:
                    if self.is_import:
                        self.status_text = "%i of %i imported." % (tables_processed, tables_total)
                    else:
                        self.status_text = "%i of %i exported." % (tables_processed, tables_total)
                else:
                    self.owner.fail_callback()
                    self.error_count += 1

                if self.abort_requested:
                    break

                self.progress = float(tables_processed) / tables_total
#                print self.progress
#               Emulate slow dump
#                import time
#                time.sleep(1)
        except Exception as exc:
            import traceback
            traceback.print_exc()
            self.print_log_message("Error executing task %s" % exc )
#        finally:
        if not self.abort_requested:
            self.progress = 1
        self.done = True


class TableListModel(object):
    def __init__(self):
        self.tables_by_schema = {}
        self.selected_schemas = set()
        self.routines_placeholder = None

    def get_full_selection(self):
        result = []
        for schema, (tables, selection) in list(self.tables_by_schema.items()):
            for table in selection:
                result.append((schema,table))
        result.sort()
        return result

    def get_schema_names(self):
        return list(self.tables_by_schema.keys())

    def set_schema_selected(self, schema, flag):
        tables = self.get_tables(schema)
        selection = self.get_selection(schema)
        if flag:
            selection.update(set(tables))
            self.selected_schemas.add(schema)
        else:
            selection.clear()
            if schema in self.selected_schemas:
                self.selected_schemas.remove(schema)

    def set_tables_by_schema(self, tables_by_schema):
        self.tables_by_schema = tables_by_schema

    def set_routines_placeholder(self, placeholder):
        self.routines_placeholder = placeholder

    def get_tables(self, schema):
        tables, selection = self.tables_by_schema[schema]
        return tables

    def is_view(self, schema, table):
        return False

    def list_icon_for_table(self, schema, table):
        if (schema, table) == self.routines_placeholder:
            return "db.RoutineGroup.16x16.png"
        else:
            return "db.Table.16x16.png"

    def get_selection(self, schema):
        selection = []
        if schema in list(self.tables_by_schema.keys()):
            tables, selection = self.tables_by_schema[schema]
        return selection

    def count_selected_tables(self):
        count = 0
        for tlist, selected in list(self.tables_by_schema.values()):
            count += len(selected)
        return count

    def get_count(self):
        return sum([len(item[1]) for item in list(self.tables_by_schema.values())])

    def get_objects_to_dump(self, include_empty_schemas=False):
        schemas_to_dump = []
        #names = self.tables_by_schema.keys()
        #names.sort()
        
        schemas_with_selection = set([key for key, value in list(self.tables_by_schema.items()) if value[1]])
      
        for schema in self.selected_schemas | schemas_with_selection:
        #No tables selected for schema so skip it
            if schema not in self.tables_by_schema.keys():
                continue
            tables, selection = self.tables_by_schema[schema]
            if not selection and not include_empty_schemas:
                continue
            schemas_to_dump.append((schema, list(selection)))
        return schemas_to_dump


    def get_tables_to_ignore(self):
        ignore_list = []
        names = list(self.tables_by_schema.keys())
        names.sort()
        for schema in names:
        #No tables selected for schema so skip it
            if schema not in self.tables_by_schema.keys():
                continue
            tables, selection = self.tables_by_schema[schema]
            if not selection or len(selection) == len(tables):
                continue
            for t in tables:
                if not t in selection:
                    ignore_list.append((schema, t))
        return ignore_list


####################################################################################################


class WbAdminSchemaListTab(mforms.Box):
    def __init__(self, owner, server_profile, progress_tab, is_importing = False):
        super(WbAdminSchemaListTab, self).__init__(False)

        self.skip_data_check = False
        self.suspend_layout()
        progress_tab.operation_tab = self

        self.owner = owner
        self.progress_tab = progress_tab
        self.is_importing = is_importing

        self.dump_thread = None
        self.bad_password_detected = False
        self.server_profile = server_profile
        self.out_pipe = None

        self.schema_list = newTreeView(mforms.TreeFlatList)
        self.schema_list.set_name("Schema List")
        self.schema_list.set_min_size(-1, 150)
        self.schema_list.add_column(mforms.CheckColumnType, is_importing and "Import" or "Export", 40, True)
        self.schema_list.add_column(mforms.IconColumnType, "Schema", 300, False)

        self.schema_list.set_cell_edited_callback(self.schema_list_edit)
        self.schema_list.end_columns()
        self.schema_list.set_allow_sorting(True)

        self.table_list = newTreeView(mforms.TreeFlatList)
        self.table_list.set_name("Table List")
        self.table_list.set_min_size(-1, 150)
        self.table_list.add_column(mforms.CheckColumnType, is_importing and "Import" or "Export", 40, True)
        self.table_list.add_column(mforms.IconColumnType, "Schema Objects", 300, False)
        self.table_list.end_columns()
        self.table_list.set_allow_sorting(True)

        self.table_list.set_cell_edited_callback(self.table_list_edit)
        self.schema_list.add_changed_callback(self.schema_selected)

        self.set_padding(8)
        self.set_spacing(10)

        box = newBox(True)
        box.set_spacing(12)

        optionspanel = newPanel(mforms.TitledBoxPanel)
        if is_importing:
            self.export_objects_panel = None
            optionspanel.set_title("Import Options")
            optionspanel.set_name("Import Options")
        else:
            self.export_objects_panel = newPanel(mforms.TitledBoxPanel)
            self.export_objects_panel.set_title("Objects to Export")
            self.export_objects_panel.set_name("Objects To Export")
            optionspanel.set_title("Export Options")
            optionspanel.set_name("Export Options")
        optionsbox = newBox(False)
        optionsbox.set_padding(8)
        optionsbox.set_spacing(6)

        self.file_btn = newButton()
        self.file_btn.set_text("...")
        self.file_btn.set_name("File Path Browse")
        self.file_btn.enable_internal_padding(False)
        self.file_btn.set_enabled(False)

        self._radio_group = mforms.RadioButton.new_id()

        if is_importing:
            self.folderlabel = newLabel("Select the Dump Project Folder to import. You can do a selective restore.")
            self.folderradio = newRadioButton(self._radio_group)
            self.folderradio.set_name("Import From Dump Project Folder")
            self.statlabel = newLabel("Press [Start Import] to start...")
            self.statlabel.set_name("Press [Start Import] To Start")
            self.statlabel.set_name("Press Start Info")
            self.filelabel = newLabel("Select the SQL/dump file to import. Please note that the whole file will be imported.")
            self.filelabel.set_name("Select File to Import Info")
            self.single_transaction_check = None
            self.include_schema_check = None
            self.dump_triggers_check = None
            #self.dump_view_check = None
            self.dump_routines_check = None
            self.dump_events_check = None
        else:
            self.filelabel = newLabel("All selected database objects will be exported into a single, self-contained file.")
            self.folderlabel = newLabel("Each table will be exported into a separate file. This allows a selective restore, but may be slower.")
            self.folderradio = newRadioButton(self._radio_group)
            self.folderradio.set_name("Export To Dump Project Folder")
            self.statlabel = newLabel("Press [Start Export] to start...")
            self.statlabel.set_name("Press [Start Export] To Start")
            self.single_transaction_check = newCheckBox()
            self.single_transaction_check.set_name("Create Dump In A Single Transaction")
            self.include_schema_check = newCheckBox()
            self.include_schema_check.set_name("Include Create Schema")
            self.dump_triggers_check = newCheckBox()
            self.dump_triggers_check.set_name("Dump Triggers")
            #self.dump_view_check = newCheckBox()
            self.dump_routines_check = newCheckBox()
            self.dump_routines_check.set_name("Dump Stored Procedures and Functions")
            self.dump_events_check = newCheckBox()
            self.dump_events_check.set_name("Dump Events")

        self.filelabel.set_enabled(False)
        self.filelabel.set_style(mforms.SmallStyle)

        if is_importing:
            self.fileradio = newRadioButton(self._radio_group)
            self.fileradio.set_text("Import from Self-Contained File")
            self.fileradio.set_name("Import From Self-Contained File")
        else:
            self.fileradio = newRadioButton(self._radio_group)
            self.fileradio.set_text("Export to Self-Contained File")
            self.fileradio.set_name("Export To Self-Contained File")

        self.fileradio.set_size(260,-1)
        self.fileradio.add_clicked_callback(self.set_save_option)

        file_path = newBox(True)
        file_path.set_spacing(4)
        self.file_te = newTextEntry()
        self.file_te.set_name("File Path Entry")
        file_path.add(self.fileradio,False,True)
        file_path.add(self.file_te, True, True)
        file_path.add(self.file_btn, False, True)

        self.folderradio.add_clicked_callback(self.set_save_option)
        self.folderradio.set_active(True)
        self.folderradio.set_size(260,-1)
        self.folderlabel.set_style(mforms.SmallStyle)

        folder_path = newBox(True)
        folder_path.set_spacing(4)
        self.folder_te = newTextEntry()
        self.folder_te.set_name("Folder Path Entry")
        self.folder_btn = newButton()
        self.folder_btn.set_text("...")
        self.folder_btn.set_name("Folder Path Browse")
        self.folder_btn.enable_internal_padding(False)
        self.folder_btn.add_clicked_callback(self.open_folder_chooser)
        folder_path.add(self.folderradio, False,True)
        folder_path.add(self.folder_te, True, True)
        folder_path.add(self.folder_btn, False, True)

        optionsbox.add(folder_path, False, True)
        optionsbox.add(self.folderlabel, False, True)
        if is_importing:
            self.folder_load_btn = newButton()
            self.folder_load_btn.set_text("Load Folder Contents")
            self.folder_load_btn.set_name("Load Folder Contents")
            self.folder_load_btn.add_clicked_callback(self.refresh_table_list)
            tbox = newBox(True)
            tbox.add(self.folder_load_btn, False, True)
            optionsbox.add(tbox, False, True)

        optionsbox.add(file_path, False, True)
        optionsbox.add(self.filelabel, False, True)

        if self.single_transaction_check or self.dump_routines_check:
            export_objects_opts = mforms.newTable()
            export_objects_opts.set_homogeneous(True)
            export_objects_opts.set_padding(4)
            export_objects_opts.set_row_count(1)
            export_objects_opts.set_column_count(3)
            export_objects_opts.set_row_spacing(2)
            export_objects_opts.set_column_spacing(2)
            self.export_objects_panel.add(export_objects_opts)
            
            export_options = mforms.newTable()
            export_options.set_name("Export Options")
            export_options.set_homogeneous(True)
            export_options.set_padding(4)
            export_options.set_row_count(1)
            export_options.set_column_count(2)
            export_options.set_row_spacing(2)
            export_options.set_column_spacing(2)
            optionsbox.add(export_options, False, True)

        if self.single_transaction_check:
            export_options.add(self.single_transaction_check,0,1,0,1)
        if self.include_schema_check:
            export_options.add(self.include_schema_check,1,2,0,1)
            
        if self.dump_routines_check:
            export_objects_opts.add(self.dump_routines_check,0,1,0,1)
        if self.dump_events_check:
            export_objects_opts.add(self.dump_events_check,1,2,0,1)

        if self.dump_triggers_check:
            export_objects_opts.add(self.dump_triggers_check,2,3,0,1)

        self.file_te.set_enabled(False)

        optionspanel.add(optionsbox)
        
        selectionpanel = newPanel(mforms.TitledBoxPanel)
        if is_importing:
            selectionpanel.set_title("Select Database Objects to Import (only available for Project Folders)")
            selectionpanel.set_name("Database Objects To Import")
        else:
            selectionpanel.set_title("Tables to Export")
            selectionpanel.set_name("Tables To Export")
        selectionvbox = newBox(False)
        selectionvbox.set_padding(8)
        selectionvbox.set_spacing(8)
        selectionbox = newBox(True)
        selectionvbox.add(selectionbox, True, True)
        selectionbox.set_spacing(12)
        selectionbox.add(self.schema_list, True, True)
        selectionbox.add(self.table_list, True, True)
        selectionbbox = newBox(True)
        selectionbbox.set_spacing(8)

        if not is_importing:
            self.refresh_button = newButton()
            self.refresh_button.set_text("Refresh")
            self.refresh_button.set_name("Refresh")
            selectionbbox.add(self.refresh_button, False, True)
            self.refresh_button.add_clicked_callback(self.refresh_table_list)

        self.select_summary_label = newLabel("")
        selectionbbox.add(self.select_summary_label, True, True)

        self.select_all_views_btn = newButton()
        self.select_all_views_btn.set_text("Select Views")
        self.select_all_views_btn.set_name("Select Views")
        self.select_all_views_btn.add_clicked_callback(self.select_all_views)
        self.select_all_views_btn.set_enabled(False)
        self.select_all_btn = newButton()
        self.select_all_btn.set_text("Select Tables")
        self.select_all_btn.set_name("Select Tables")
        self.select_all_btn.add_clicked_callback(self.select_all_tables)
        self.select_all_btn.set_enabled(False)
        self.unselect_all_btn = newButton()
        self.unselect_all_btn.set_text("Unselect All")
        self.unselect_all_btn.set_name("Unselect All")
        self.unselect_all_btn.add_clicked_callback(self.unselect_all_tables)
        self.unselect_all_btn.set_enabled(False)
        
        self.dump_type_selector = newSelector()
        self.dump_type_selector.add_items(["Dump Structure and Data", "Dump Data Only", "Dump Structure Only"]);
        self.dump_type_selector.set_name("Dump Selector")
        
        selectionbbox.add_end(self.unselect_all_btn, False, True)
        selectionbbox.add_end(self.select_all_btn, False, True)
        selectionbbox.add_end(self.select_all_views_btn, False, True)
        selectionbbox.add_end(self.dump_type_selector, False, True)
        selectionvbox.add(selectionbbox, False, True)
        selectionpanel.add(selectionvbox)

        if is_importing:
            self.add(optionspanel, False, True)

            self.import_target_schema_panel = targetpanel = newPanel(mforms.TitledBoxPanel)
            targetpanel.set_title("Default Schema to be Imported To")
            targetpanel.set_name("Default Schema To Be Imported To")
            hbox = newBox(True)
            hbox.set_spacing(8)
            hbox.add(newLabel("Default Target Schema:"), False, True)
            self.import_target_schema = newSelector()
            self.import_target_schema.set_name("Target Schema Selector")
            hbox.add(self.import_target_schema, True, True)
            b = newButton()
            b.set_name("New")
            b.set_text("New...")
            b.add_clicked_callback(self.new_target_schema)

            hbox.add(b, False, True)
            help = newLabel("The default schema to import the dump into.\nNOTE: this is only used if the dump file doesn't contain its schema,\notherwise it is ignored.")
            help.set_style(mforms.SmallHelpTextStyle)
            hbox.add(help, False, True)
            hbox.set_padding(12)
            targetpanel.add(hbox)

            self.add(targetpanel, False, True)
        self.add(selectionpanel, True, True)

        if not is_importing:
            self.add(self.export_objects_panel, False, True)
            self.add(optionspanel, False, True)

        box = newBox(True)
        self.add(box, False, True)

        box.add(self.statlabel, True, True)

        box.set_spacing(8)
        box.set_padding(0)

        self.export_button = newButton()
        if is_importing:
            self.export_button.set_enabled(False)
        box.add_end(self.export_button, False, True)
        self.export_button.add_clicked_callback(self.start)

        if is_importing:
            self.file_btn.add_clicked_callback(lambda: self.open_file_chooser(mforms.OpenFile))
            self.folderradio.set_text("Import from Dump Project Folder")
            self.export_button.set_text("Start Import")
            self.export_button.set_name("Start Import")
        else:
            self.file_btn.add_clicked_callback(lambda: self.open_file_chooser(mforms.SaveFile))
            self.single_transaction_check.set_text("Create Dump in a Single Transaction (self-contained file only)")
            self.single_transaction_check.set_enabled(False)
            self.single_transaction_check.add_clicked_callback(self.single_transaction_clicked)
            self.include_schema_check.set_text("Include Create Schema")
            self.dump_triggers_check.set_text("Dump Triggers")
            #self.dump_view_check.set_text("Dump Views")
            self.dump_routines_check.set_text("Dump Stored Procedures and Functions")
            self.dump_events_check.set_text("Dump Events")

            self.folderradio.set_text("Export to Dump Project Folder")
            self.export_button.set_text("Start Export")
            self.export_button.set_name("Start Export")

        self.resume_layout()

    def print_log_message(self, msg):
        self.progress_tab.print_log_message(msg)

    def get_default_dump_folder(self):
        try:
            path = grt.root.wb.options.options["dumpdirectory"] or os.path.join("~", "dumps")
        except:
            path = os.path.join("~", "dumps")
        path = os.path.expanduser(path)
        return os.path.normpath(path)

    def schema_list_edit(self, node, col, data):
        if col == 0:
            node.set_bool(0, int(data) != 0)
            schema = node.get_string(1)
            self.table_list_model.set_schema_selected(schema, int(data))
            self.schema_selected()

    def table_list_edit(self, node, col, data):
        node.set_bool(col, int(data) != 0)
        self.update_table_selection()
        if int(data):
            # select the schema if its not
            sel = self.schema_list.get_selected_node()
            if sel and not sel.get_bool(0):
                sel.set_bool(col, True)
                self.schema_selected()

    def update_table_selection(self):
        if not self.get_selected_schema():
            return
        schema = self.get_selected_schema()
        selection = self.table_list_model.get_selection(schema)
        for r in range(self.table_list.count()):
            node = self.table_list.node_at_row(r)
            table_name = node.get_tag()
            if node.get_bool(0):
                selection.add(table_name)
            else:
                selection.discard(table_name)
        self.select_summary_label.set_text("%i tables/views selected" % self.table_list_model.count_selected_tables())

    def get_selected_schema(self):
        sel = self.schema_list.get_selected_node()
        if not sel:
            return None
        return sel.get_string(1)

    def schema_selected(self):
        sel = self.schema_list.get_selected_node()
        self.table_list.freeze_refresh()
        self.table_list.clear()
        if not sel:
            self.unselect_all_btn.set_enabled(False)
            self.select_all_btn.set_enabled(False)
            self.select_all_views_btn.set_enabled(False)
            self.table_list.thaw_refresh()
            return
        schema = self.get_selected_schema()
        tables = self.table_list_model.get_tables(schema)
        selection = self.table_list_model.get_selection(schema)
        for table in tables:
            r = self.table_list.add_node()
            r.set_bool(0, table in selection)
            r.set_icon_path(1, self.table_list_model.list_icon_for_table(schema, table))
            r.set_string(1, table)
            r.set_tag(table)
        self.table_list.thaw_refresh()
        self.unselect_all_btn.set_enabled(True)
        self.select_all_btn.set_enabled(True)
        self.select_all_views_btn.set_enabled(True)

        self.select_summary_label.set_text("%i tables selected" % self.table_list_model.count_selected_tables())

    def select_all_views(self):
        sel = self.schema_list.get_selected_node()
        if not sel:
            return
        sel.set_bool(0, True)
        schema = self.get_selected_schema()
        for row in range(self.table_list.count()):
            node = self.table_list.node_at_row(row)
            table = node.get_string(1)
            node.set_bool(0, self.table_list_model.is_view(schema, table))
        self.update_table_selection()

    def select_all_tables(self, exclude_views=True):
        sel = self.schema_list.get_selected_node()
        if not sel:
            return
        sel.set_bool(0, True)
        schema = self.get_selected_schema()
        for row in range(self.table_list.count()):
            node = self.table_list.node_at_row(row)
            table = node.get_string(1)
            node.set_bool(0, not self.table_list_model.is_view(schema, table))
        self.update_table_selection()


    def unselect_all_tables(self):
        for row in range(self.table_list.count()):
            self.table_list.node_at_row(row).set_bool(0, False)
        self.update_table_selection()

    def set_save_option(self):
        folder_selected = self.folderradio.get_active()
        self.folder_te.set_enabled(folder_selected)
        self.folder_btn.set_enabled(folder_selected)
        self.folderlabel.set_enabled(folder_selected)
        self.file_te.set_enabled(not folder_selected)
        self.file_btn.set_enabled(not folder_selected)
        self.filelabel.set_enabled(not folder_selected)

        if self.is_importing:
            if folder_selected:
                count = self.table_list_model.get_count()
                self.progress_tab.set_start_enabled(count > 0)
                self.import_target_schema_panel.set_enabled(False)
            else:
                self.progress_tab.set_start_enabled(True)
                self.import_target_schema_panel.set_enabled(True)
                self.refresh_schema_list()
            self.schema_list.set_enabled(folder_selected)
            self.table_list.set_enabled(folder_selected)
        else:
            if folder_selected:
                self.single_transaction_check.set_active(False)
                self.single_transaction_check.set_enabled(False)
            else:
                self.single_transaction_check.set_enabled(True)


    def refresh(self):
        pass


    def update_progress(self):
        completed = True
        progress = 0
        progress_info = ""
        if self.dump_thread != None:
            if not self.dump_thread.done:
                completed = False
            progress = self.dump_thread.progress
            self.progress_tab.flush_queued_logs()
            progress_info = self.dump_thread.status_text
            if isinstance(self.dump_thread.e, wb_common.InvalidPasswordError):
                self.dump_thread = None
                self.bad_password_detected = True
                self.start()
                return False
        self.progress_tab.set_progress(progress, progress_info)
#       Python 2.6 needed
#       completed = self.dump_thread.is_alive()
        if completed:
#            print progress
            self.close_pipe()
            if self.dump_thread.abort_requested:
                self.tasks_aborted()
            else:
                self.tasks_completed()
            self.dump_thread = None
        return not completed

    def open_folder_chooser(self):
        filechooser = FileChooser(mforms.OpenDirectory)
        filechooser.set_directory(self.folder_te.get_string_value())
        if filechooser.run_modal():
            self.folder_te.set_value(filechooser.get_path())
            if self.is_importing:
                self.refresh_table_list()

    def open_file_chooser(self, chooser_type=mforms.SaveFile):
        filechooser = FileChooser(chooser_type)
        filechooser.set_directory(os.path.dirname(self.file_te.get_string_value()))
        filechooser.set_extensions("SQL Files (*.sql)|*.sql","sql");
        
        if filechooser.run_modal():
            filepath = filechooser.get_path()
            self.file_te.set_value(filepath)
        
            if self.is_importing:
                self.refresh_table_list()
            else:
                if len(os.path.splitext(filepath)[1][1:]) == 0:
                    self.file_te.set_value("%s.sql" % filepath)

    def get_mysql_password(self, reset_password=False):
        parameterValues = self.server_profile.db_connection_params.parameterValues
        username = parameterValues["userName"]
        host = self.server_profile.db_connection_params.hostIdentifier
        title = self.is_importing and "Import" or "Export"
        if self.bad_password_detected:
            title += ' (type the correct password)'
            self.bad_password_detected = False

        if not reset_password and not self.bad_password_detected:
            pwd = self.owner.ctrl_be.get_mysql_password()

        if pwd is None:
            accepted, pwd = mforms.Utilities.find_or_ask_for_password(title, host, username, reset_password)
            if not accepted:
                return None
        return pwd

    def stop(self):
        if self.dump_thread:
            self.dump_thread.kill()

    def failed(self, message):
        self.progress_tab.did_fail(message)

    def cancelled(self, message):
        self.progress_tab.did_cancel(message)


####################################################################################################
## Import
####################################################################################################

class WbAdminImportTab(WbAdminSchemaListTab):
    def __init__(self, owner, server_profile, progress_tab):
        WbAdminSchemaListTab.__init__(self, owner, server_profile, progress_tab, True)
        self.table_list_model = TableListModel()
        self.export_button.set_text("Start Import")
        self.tables_paths = {}
        self.views_paths = {}
        self._update_schema_list_tm = None
        self._update_progress_tm = None
        
        self.folder_te.set_value(self.get_default_dump_folder())
        self.file_te.set_value(os.path.join(self.get_default_dump_folder(), "export.sql"))

    def new_target_schema(self):
        ret, name = Utilities.request_input("Create Schema", "Name of schema to create:", "newschema")
        if ret:
            if not self.owner.ctrl_be.is_sql_connected():
                Utilities.show_error("Create Schema", "Cannot create schema because there is no connection to the DB server.", "OK", "", "")
                return
            name = name.replace("`", "``")
            try:
                self.print_log_message("Creating schema %s\n" % name)
                self.owner.ctrl_be.exec_sql("CREATE DATABASE `%s`" % name, auto_reconnect=False)
            except QueryError as err:
                self.print_log_message("Error creating schema %s: %s\n" % (name, err))
                Utilities.show_error("Create Schema", str(err), "OK", "", "")
                if err.is_connection_error():
                    self.owner.ctrl_be.handle_sql_disconnection(err)
                return
            self.refresh_schema_list()
            self.import_target_schema_selection = name

    def _refresh_schema_list_thread(self):
        self.schema_names = []
        try:
            result = self.owner.ctrl_be.exec_query("SHOW DATABASES", auto_reconnect=False)
            while result.nextRow():
                value = result.unicodeByName("Database")
                if value == "information_schema":
                    continue
                self.schema_names.append(value)
            del result
            self.schema_refresh_done = True
        except QueryError as exc:
            self.print_log_message("Error fetching schema list: %s" % str(exc))
            if exc.is_connection_error():
                if self.owner.ctrl_be.handle_sql_disconnection(exc):
                    self.schema_refresh_cancelled = "Error fetching schema list:\n%s\nReconnected successfully." % str(exc)
                else:
                    self.schema_refresh_cancelled = "Error fetching schema list:\n%s\nCould not reconnect." % str(exc)
            else:
                self.schema_refresh_cancelled = "Error fetching schema list:\n%s" % str(exc)
        except Exception as exc:
            self.print_log_message("Error fetching schema list: %s" % str(exc) )
            self.schema_refresh_cancelled = "Error fetching schema list:\n%s" % str(exc)

    def refresh_schema_list(self):
        if not self.owner.ctrl_be.is_sql_connected():
            return

        class SchemaRefreshThread(threading.Thread):
            def __init__(self, owner):
                self.owner = owner
                threading.Thread.__init__(self)

            def run(self):
                self.owner._refresh_schema_list_thread()

        self.schema_refresh_thread = SchemaRefreshThread(self)
        self.schema_refresh_thread.start()
        self.schema_refresh_done = False
        self.schema_refresh_cancelled = None
        self.import_target_schema_selection = self.import_target_schema.get_string_value()
        self._update_schema_list_tm = Utilities.add_timeout(float(0.4), self._update_schema_list)

    def _update_schema_list(self):
        if self.schema_refresh_cancelled:
            Utilities.show_error("Refresh Schema List", self.schema_refresh_cancelled, "OK", "", "")
            self.schema_refresh_cancelled = None
            self._update_schema_list_tm = None
            return False
        if not self.schema_refresh_done:
            return True
        self.import_target_schema.clear()
        self.import_target_schema.add_items([""]+self.schema_names)
        if self.import_target_schema_selection:
            self.import_target_schema.set_value(self.import_target_schema_selection)
        self._update_schema_list_tm = None
        return False

    def close(self):
        if self._update_schema_list_tm:
            Utilities.cancel_timeout(self._update_schema_list_tm)
        if self._update_progress_tm:
            Utilities.cancel_timeout(self._update_progress_tm)

    def refresh_table_list(self):
        def parse_name_from_single_table_dump(path):
            import codecs
            f = codecs.open(path, encoding="utf-8")
            schema = None
            table = None
            is_view = False
            has_default_schema = False
            for line in f:
                if line.startswith("-- Host:"):
                    schema = line.partition("Database: ")[-1].strip()
                    if table:
                        break
                elif line.startswith("USE "):
                    has_default_schema = True
                elif not table and line.startswith("-- Table structure for table"):
                    table = line.partition("-- Table structure for table")[-1].strip()
                    if table[0] == '`':
                        table = table[1:-1]
                    if schema:
                        break
                elif not table and line.startswith("-- Dumping data for table"):
                    table = line.partition("-- Dumping data for table")[-1].strip()
                    if table[0] == '`':
                        table = table[1:-1]
                    if schema:
                        break
                elif line.startswith( ("/*!50001 VIEW", "/*!50003 CREATE*/ /*!50020 DEFINER=","/*!50106 CREATE*/ /*!50117 DEFINER=") ):
                    is_view = True
                    table = "Views, routines, events etc"
                    if schema:
                        break
            return schema, table, is_view, has_default_schema

        self.folder_load_btn.set_enabled(False)
        tables_by_schema = {}
        # (schema, table) -> path
        self.tables_paths = {}
        self.views_paths = {}
        self.needs_default_schema = {}
        self.schema_list.freeze_refresh()
        self.schema_list.clear()
        try:
            save_to_folder = not self.fileradio.get_active()
            if save_to_folder:
                self.progress_tab.set_start_enabled(False)
                path = self.folder_te.get_string_value()
                dirList=os.listdir(path)
                for fname in dirList:
                    fullname = os.path.join(path, fname)
                    if os.path.isfile(fullname) and os.path.splitext(fullname)[1] == ".sql":
                        # open the backup file and look for schema and table name in it
                        schema, table, is_view, has_default_schema = parse_name_from_single_table_dump(fullname)
                        if not schema or not table:
                            self.progress_tab.print_log_message("%s does not contain schema/table information" % fullname)
                            continue
                        if schema in tables_by_schema:
                            tables, selection = tables_by_schema[schema]
                            if table in tables:
                                self.schema_list.thaw_refresh()
                                message = "The selected folder doesn't appear to be valid. Multiple definitions of the same object (%s.%s) have been found." % (schema, table)
                                Utilities.show_error("Open Dump Folder", message, "OK", "", "")
                                return
                                
                            tables.append(table)
                            tables.sort()
                            selection.add(table) # select all by default
                        else:
                            tables_by_schema[schema] = ([table], set([table]))
                        if is_view:
                            self.views_paths[(schema, table)] = fullname
                            self.table_list_model.set_routines_placeholder((schema, table))
                        else:
                            self.tables_paths[(schema, table)] = fullname
                        self.needs_default_schema[(schema, table)] = not has_default_schema

                if not tables_by_schema:
                    Utilities.show_message("Open Dump Folder", "There were no dump files in the selected folder.", "OK", "", "")
                else:
                    names = list(tables_by_schema.keys())
                    names.sort()
                    for schema in names:
                        row = self.schema_list.add_node()
                        row.set_bool(0, True)
                        row.set_icon_path(1, "db.Schema.16x16.png")
                        row.set_string(1, schema)

                self.progress_tab.set_start_enabled(True)
            self.schema_list.thaw_refresh()
        except Exception as exc:
            import traceback
            self.schema_list.thaw_refresh()
            traceback.print_exc()
            Utilities.show_error("Error Opening Dump", str(exc), "OK", "", "")
            self.export_button.set_enabled(False)
            self.failed(str(exc))
        self.table_list_model.set_tables_by_schema(tables_by_schema)

        self.folder_load_btn.set_enabled(True)

        for schema in list(tables_by_schema.keys()):
              self.table_list_model.set_schema_selected(schema, True)

    def get_path_to_mysql(self):
        # get path to mysql client from options
        try:
            path = grt.root.wb.options.options["mysqlclient"]
            if path:
                if os.path.exists(path):
                    return path
                if any(os.path.exists(os.path.join(p,path)) for p in os.getenv("PATH").split(os.pathsep)):
                    return path
                if path != "mysql":
                  return None
        except:
            return None

        if sys.platform.lower() == "darwin":
            # if path is not specified, use bundled one
            return mforms.App.get().get_executable_path("mysql")
        elif sys.platform.lower() == "win32":
            return mforms.App.get().get_executable_path("mysql.exe")
        else:
            # if path is not specified, use bundled one
            path = mforms.App.get().get_executable_path("mysql")
            if path:
                return path
            # just pick default
            if any(os.path.exists(os.path.join(p,"mysql")) for p in os.getenv("PATH").split(os.pathsep)):
                return "mysql"
            return None

    def start(self):
        self.progress_tab.set_start_enabled(False)
        self.progress_tab.did_start()
        self.progress_tab.set_status("Import is running...")

        connection_params = self.server_profile.db_connection_params
        tunnel = ConnectionTunnel(connection_params)

        conn = connection_params.parameterValues

        from_folder = not self.fileradio.get_active()

        operations = []
        extra_args = ""
        if from_folder:
            self.path = self.folder_te.get_string_value()
        else:
            self.path = self.file_te.get_string_value()
        #self.path = self.folder_te.get_string_value() if from_folder else self.file_te.get_string_value()

        if from_folder:
            selection = self.table_list_model.get_full_selection()
            # make sure routines, views and stuffs get imported last
            if self.table_list_model.routines_placeholder in selection:
                selection.remove(self.table_list_model.routines_placeholder)
                selection.append(self.table_list_model.routines_placeholder)
            for schema, table in selection:
                logmsg = "Restoring %s (%s)" % (schema, table)
                path = self.tables_paths.get((schema, table))
                
                if self.needs_default_schema[(schema, table)]:
                    extra_args = ["--database=%s" % schema]
                # description, object_count, extra_args, objects, pipe_factory
                if path != None:
                    task = DumpThread.TaskData(logmsg, 1, extra_args, [path], None, lambda:None)
                    #operations.insert(0,task)
                    operations.append(task)
                else:
                    path = self.views_paths.get((schema, table))
                    task = DumpThread.TaskData(logmsg, 1, extra_args, [path], None, lambda:None)
                    if path != None:
                        operations.append(task)
        else:
            if not os.path.exists(self.path):
                Utilities.show_message("Dump file not found", "File %s doesn't exist" % self.path, "OK", "", "")
                self.failed("Dump file not found: File %s doesn't exist" % self.path)
                return
            logmsg = "Restoring " + self.path
            # description, object_count, pipe_factory, extra_args, objects
            extra_args = []
            task = DumpThread.TaskData(logmsg, 1, extra_args, [self.path], None, lambda:None)
            operations.append(task)
#            operations.append((logmsg, 1, lambda:None, [], [self.path]))

        if connection_params.driver.name == "MysqlNativeSocket":
            host_option = "--protocol="+("pipe" if sys.platform == "win32" else "socket")
            if conn["socket"]:
                port_option = "--socket=" + [conn["socket"]][0]
            else:
                port_option = ""
        else:
            if tunnel.port or conn["port"]:
                port_option = "--port=" + str(tunnel.port or conn["port"])
            else:
                port_option = ""
            if (tunnel.port and ["localhost"] or [conn["hostName"]])[0]:
                host_option = "--host=" + (tunnel.port and ["localhost"] or [conn["hostName"]])[0]
            else:
                host_option = ""

        params = [
        "--password="
        ]
        if conn.get("useSSL", 0):
            if conn.get("sslCert", ""):
                params.append("--ssl-cert=%s" % conn["sslCert"])
            if conn.get("sslCA", ""):
                params.append("--ssl-ca=%s" % conn["sslCA"])
            if conn.get("sslKey", ""):
                params.append("--ssl-key=%s" % conn["sslKey"])
            if conn.get("sslCipher", ""):
                params.append("--ssl-cipher=%s" % conn["sslCipher"])
        params += [
        host_option,
        "--user=" + conn["userName"],
        port_option,
        "--default-character-set=utf8",
        "--comments",
        "<" # the rest of the params will be redirected from stdin
        ]
        if not from_folder:
            target_db = self.import_target_schema.get_string_value()
            if target_db:
                params.insert(-1, "--database=%s" % target_db)

        params = [item for item in params if item]
        if connection_params.driver.name != "MysqlNativeSocket":
            params.insert(1, "--protocol=tcp")

        if conn.get("OPT_ENABLE_CLEARTEXT_PLUGIN", ""):
            params.insert(1, "--enable-cleartext-plugin")

        cmd = self.get_path_to_mysql()
        if cmd == None:
            self.failed("mysql command was not found, please install it or configure it in Preferences -> Administrator")
            return
#        if cmd[0] != '"':
#            cmd = '"' + cmd + '"'
        #cmd += " " + (" ".join(params))
        cmd = subprocess.list2cmdline([cmd] + params)

        password = self.get_mysql_password(self.bad_password_detected)
        if password is None:
            self.cancelled("Password Input Cancelled")
            return

        self.dump_thread = DumpThread(cmd, operations, password, self, (self.progress_tab.logging_lock, self.progress_tab.log_queue))
        self.dump_thread.is_import = True
        self.dump_thread.start()
        self._update_progress_tm = Utilities.add_timeout(float(0.4), self._update_progress)

    def _update_progress(self):
        r = self.update_progress()
        if not r:
            self._update_progress_tm = None
        return r

    def fail_callback(self):
        pass

    def close_pipe(self):
        pass

    def tasks_aborted(self):
        self.cancelled(time.strftime('%X ') + "Aborted by User")
        self.progress_tab.print_log_message("Restored database(s) maybe in an inconsistent state")


    def tasks_completed(self):
        logmsg = time.strftime('%X ') + "Import of %s has finished" % self.path
        if self.dump_thread.error_count > 0:
            self.progress_tab.set_status("Import Completed With %i Errors" % self.dump_thread.error_count)
            logmsg += " with %i errors" % self.dump_thread.error_count
        else:
            self.progress_tab.set_status("Import Completed")
        self.progress_tab.print_log_message(logmsg)
        self.progress_tab.did_complete()


####################################################################################################
## Export
####################################################################################################

class WbAdminExportTab(WbAdminSchemaListTab):
    class ExportTableListModel(TableListModel):
        def __init__(self):
            TableListModel.__init__(self)
            self.views_by_schema = {}
            self.schemasqls = {}
            self.schemas_to_load = {}
            self.schemas = []
            self.load_schema_data = lambda:None
            

        def reset(self):
            self.tables_by_schema = {}
            self.views_by_schema = {}
            self.schemasqls = {}

        def get_schema_names(self):
            return self.schemas

        def set_schema_data(self, schema, schematables_and_views, viewlist, dbsql):
            self.tables_by_schema[schema] = schematables_and_views, set()
            self.views_by_schema[schema] = set(viewlist)
            self.schemasqls[schema] = dbsql

        def get_schema_sql(self, schema):
            return self.schemasqls[schema]

        def is_view(self, schema, table):
            return table in self.views_by_schema[schema]

        def list_icon_for_table(self, schema, table):
            return "db.View.16x16.png" if self.is_view(schema, table) else "db.Table.16x16.png"

        def set_schema_list(self,schemas_to_load):
            self.schemas = schemas_to_load
            self.schemas_to_load = schemas_to_load

        def get_tables(self, schema):
            if schema in self.schemas_to_load:
#                print "Loading: ",schema,self.load_schema_data(schema)
                schema,schematables,viewlist,dbsql = self.load_schema_data(schema)
                self.set_schema_data(schema,schematables,viewlist,dbsql)
                self.schemas_to_load.remove(schema)
            tables = []
            if schema in list(self.tables_by_schema.keys()):
                tables, selection = self.tables_by_schema[schema]
            return tables


        def validate_single_transaction(self, schemas_to_dump):
            return True

    class TableRefreshThread(threading.Thread):
        def __init__(self, owner):
            self.owner = owner
            threading.Thread.__init__(self)

        def run(self):
            self.owner.refresh_table_list_thread()

    def __init__(self, owner, server_profile, progress_tab):
        self.table_list_model = self.ExportTableListModel()
        WbAdminSchemaListTab.__init__(self, owner, server_profile, progress_tab, False)
        self.schemasqls = {}
        self._update_refresh_tm = None
        self._update_progress_tm = None

        defaultPath = os.path.join(self.get_default_dump_folder(), time.strftime("Dump%Y%m%d"))
        # updates self.savefolder_path
        self.folder_te.set_value(self.find_available_path(defaultPath))
        # updates self.savefile_path
        self.file_te.set_value(self.find_available_path(defaultPath + '.sql'))

        self.table_list_model.load_schema_data = self.load_schema_tables
#        self.filefolder_label.set_text("Save to")
        # run mysqldump --help to get default option values
        self.mysqldump_defaults = self.check_mysqldump_defaults()

        self.ignore_internal_log_tables = True
        self.internal_log_tables = ["apply_status", "general_log", "slow_log", "schema"]

        self._compatibility_params = False

        self.show_internal_schemas = False

    def close(self):
        if self._update_refresh_tm:
            Utilities.cancel_timeout(self._update_refresh_tm)
            self._update_refresh_tm = None
        if self._update_progress_tm:
            Utilities.cancel_timeout(self._update_progress_tm)
            self._update_progress_tm = None

    def load_schema_tables(self, schema):
        schematables_and_views = []
        viewlist = []
        dbsql = ""
        try:
            self.refresh_state= "Retrieving tables data for schema " + schema
            dbcreate = self.owner.ctrl_be.exec_query("SHOW CREATE DATABASE `"+escape_sql_identifier(schema)+"`")
            tableset = self.owner.ctrl_be.exec_query("SHOW FULL TABLES FROM `"+escape_sql_identifier(schema)+"`")
            dbcreate.nextRow()
            dbsql = dbcreate.unicodeByName("Create Database")
            parts = dbsql.partition("CREATE DATABASE ")
            dbsql = "%s%s IF NOT EXISTS %s;\nUSE `%s`;\n" % (parts[0], parts[1], parts[2], escape_sql_identifier(schema))
            while tableset.nextRow():            
                tabletype = tableset.unicodeByName("Table_type")
                tablename = tableset.unicodeByName("Tables_in_"+schema)
                
                if self.ignore_internal_log_tables and schema == "mysql" and tablename in self.internal_log_tables:
                    continue

                if tabletype == "VIEW":
                    viewlist.append(tablename)
                schematables_and_views.append(tablename)
            del tableset
        except Exception as exc:
            import traceback
            traceback.print_exc()
            print("Error retrieving table list form schema '",schema,"'")
            self.progress_tab.print_log_message("Error Fetching Table List From %s (%s)" % (schema, str(exc)) )
        return schema,schematables_and_views,viewlist,dbsql

    def refresh_table_list_thread(self):
        self.table_list_model.reset()
        try:
            result = self.owner.ctrl_be.exec_query("SHOW DATABASES")
            schema_names = []
            while result.nextRow():
                value = result.unicodeByName("Database")
                if not self.show_internal_schemas and value in ["information_schema", "performance_schema", "mysql"]:
                    continue
                schema_names.append(value)
            del result
            self.table_list_model.set_schema_list(schema_names)
            schema_cntr = 1
            if schema_names:
                self.refresh_progress = float(schema_cntr) / len(schema_names)
                for schema in schema_names:
#                    schematables,viewlist,dbsql = self.load_schema_tables(schema)
#                     finally:
                    schema_cntr += 1
                    self.refresh_progress = float(schema_cntr) / len(schema_names)
#                    self.table_list_model.set_schema_data(schema,(schematables, set()),viewlist,dbsql)
            else:
                self.refresh_progress = 1
        except Exception as exc:
            self.print_log_message("Error updating DB: %s" % str(exc) )
#        finally:
        self.refresh_completed = True

    def refresh_table_list(self):
        self.table_list_model.reset()
        ####self.refresh_progressbar.set_value(0)

        if not self.owner.ctrl_be.is_sql_connected():
            return

        #self.hintlabel.set_text("Schema list update...")
        self.refresh_state = "Retrieving schema list"
        self.refresh_progress = 0
        self.schema_list.clear()
        self.refresh_button.set_enabled(False)
        self.refresh_thread = self.TableRefreshThread(self)
#        refresh_thread.run()
        self.refresh_completed = False
        self.refresh_thread.start()
        if not self._update_refresh_tm:
            self._update_refresh_tm = Utilities.add_timeout(float(0.4), self.update_refresh)

    def update_refresh(self):
        self.progress_tab.flush_queued_logs()

        if self.refresh_progress > 1:
            self.refresh_progress = float(1)
        ####self.refresh_progressbar.set_value(self.refresh_progress)
        self.select_summary_label.set_text(self.refresh_state)
        if not self.refresh_completed:
            return True
        ####self.refresh_progressbar.set_value(0)
        names = self.table_list_model.get_schema_names()
        names.sort()
        self.schema_list.freeze_refresh()
        for schema in names:
            r = self.schema_list.add_node()
            r.set_icon_path(1, "db.Schema.16x16.png")
            r.set_string(1, schema)
            r.set_bool(0, False)
        self.schema_list.thaw_refresh()
        self.refresh_button.set_enabled(True)
        self.select_summary_label.set_text("")
        ###self.hintlabel.set_text("Press [Start Export] to start...")
        self._update_refresh_tm = None
        return False

    def find_available_path(self, currentPath, ext = None):
        # remove the extension if exists
        ext = os.path.splitext(currentPath)[1]
        if len(ext) > 1:
            currentPath = currentPath[:-len(ext)]
            
        # remove old path resolution, if exists
        suffixBegin = currentPath.find(' (')
        if suffixBegin > 0:
            suffixEnd = currentPath.find(')', suffixBegin)
            if suffixEnd == -1:
                suffixEnd = len(currentPath)
            else:
                suffixEnd += 1
            currentPath = currentPath[:suffixBegin] + currentPath[suffixEnd:]
        
        result = currentPath
        counter = 0
        while os.path.exists(result + ext):
            counter += 1
            result = "%s (%d)" % (currentPath, counter)
            
        return result + ext

    def check_mysqldump_version(self, about_to_run=False):
        mysqldump_version = get_mysqldump_version()
        
        if not mysqldump_version:
            if about_to_run:
                mforms.Utilities.show_error("Could not get mysqldump version", "Workbench was unable to get mysqldump version. Please verify the log for more information.", "OK", "", "")
            else:
                self.print_log_message("Workbench was unable to get mysqldump version")
              
            return False
        
        if str(mysqldump_version).split('.')[:2] != str(self.owner.ctrl_be.target_version).split('.')[:2]:
            msg = "%s is version %s, but the MySQL Server to be dumped has version %s.\nBecause the version of mysqldump is not the same as the server, some features may not be backed up properly.\nIt is recommended you upgrade or downgrade your local MySQL client programs, including mysqldump, to a version equal to or newer than that of the target server.\nThe path to the dump tool must then be set in Preferences -> Administrator -> Path to mysqldump Tool:" % (get_path_to_mysqldump(), mysqldump_version, self.owner.ctrl_be.target_version)
            if about_to_run:
                if not mforms.Utilities.show_warning("mysqldump Version Mismatch", msg, "Continue Anyway", "Cancel", ""):
                    return False
            else:
                self.print_log_message(msg)
                
        # When using mysqldump >=5.6 and a server < 5.6, an additional parameter needs to be added
        # for backwards compatibility
        if (mysqldump_version >= Version(5, 6) and self.owner.ctrl_be.target_version < Version(5, 6)):
            self._compatibility_params = True
          
        return True
      
    def check_mysqldump_defaults(self):
        defaults = {}
        # check mysqldump default values
        path = get_path_to_mysqldump()
        if path:
            output = []
            local_run_cmd('"%s" --help' % path, output_handler= lambda line,l=output: l.append(line if isinstance(line, str) else line.decode("utf-8")))
            ok = False
            for line in ("\n".join(output)).split("\n"):
                line = line.strip()
                if line.startswith("-----------") and line.endswith("-----------"):
                    ok = True
                    continue
                if ok:
                    t = line.split()
                    if len(t) == 2:
                        k, v = t
                        if v in ("TRUE", "FALSE"):
                            defaults[k] = v
        return defaults

    def validate_single_transaction(self, starting):
        if self.single_transaction_check.get_active() and self.owner.get_lock_tables() == {'lock-tables': 'TRUE'}:
            r = mforms.Utilities.show_warning("Export to Disk",
                              "Single transaction with --lock-tables is not supported.\n"
                              "Disable --lock-tables?",
                              "Disable", "Cancel", "")
            if r == mforms.ResultOk:
                self.owner.set_lock_tables(False)
                return True
            else:
                return False

        return True

    def single_transaction_clicked(self):
        self.validate_single_transaction(False)

    def set_show_internal_schemas(self, show_internal_schemas):
        self.show_internal_schemas = show_internal_schemas

    class ViewDumpData(DumpThread.TaskData):
        def __init__(self,schema,views,make_pipe):
            title = "Dumping " + schema + " views"
            DumpThread.TaskData.__init__(self, title, len(views), [], [schema] + views, None, make_pipe)

    class TableDumpData(DumpThread.TaskData):
        def __init__(self,schema,table,args, make_pipe):
            title = "Dumping " + schema
            title += " (%s)" % table
            DumpThread.TaskData.__init__(self,title, 1, [] + args, [schema, table], None, make_pipe)

    class TableDumpNoData(DumpThread.TaskData):
        def __init__(self,schema,table,args, make_pipe):
            title = "Dumping " + schema
            title += " (%s)" % table
            DumpThread.TaskData.__init__(self,title, 1, ["--no-data"] + args, [schema, table], None, make_pipe)

    class ViewsRoutinesEventsDumpData(DumpThread.TaskData):
        def __init__(self, schema, views, args, make_pipe):
            title = "Dumping " + schema + " views and/or routines and/or events"
            if not views:
                extra_args = ["--no-create-info"]
            else:
                extra_args = []
            DumpThread.TaskData.__init__(self,title, len(views), ["--skip-triggers", " --no-data" ," --no-create-db"] + extra_args + args, [schema] + views, None, make_pipe)

    def dump_to_folder(self, schemaname, tablename, include_schema):
        self.close_pipe()
        path = os.path.join(self.path, normalize_filename(schemaname) + "_" + normalize_filename(tablename) + '.sql')
        i = 0
        # check if the path already exists (they could become duplicated because of normalization)
        while os.path.exists(path):
            path = os.path.join(self.path, normalize_filename(schemaname) + "_" + normalize_filename(tablename) + ('%i.sql'%i))
        self.out_pipe = open(path,"w")
        if include_schema:
            data = self.table_list_model.get_schema_sql(schemaname)
            self.out_pipe.write(data)
            self.out_pipe.flush()
        return self.out_pipe

    def start(self):
        
        save_to_folder = not self.fileradio.get_active()

        if save_to_folder:
            self.path = self.folder_te.get_string_value()
            if os.path.exists(self.path):
                if not mforms.Utilities.show_warning("Folder already exists", "You are about to overwrite the specified folder. Do you want to continue overwrite?", "Overwrite", "Cancel", ""):
                    return False
        else:
            self.path = self.file_te.get_string_value()
            if os.path.exists(self.path):
                if not mforms.Utilities.show_warning("File already exists", "You are about to overwrite the specified file. Do you want to continue overwrite?", "Overwrite", "Cancel", ""):
                    return False
        
        self.progress_tab.set_start_enabled(False)

        if not self.check_mysqldump_version(True):
            self.progress_tab.set_start_enabled(True)
            return

        if not self.validate_single_transaction(True):
            self.progress_tab.set_start_enabled(True)
            return
        
        connection_params = self.server_profile.db_connection_params
        tunnel = ConnectionTunnel(connection_params)

        conn = connection_params.parameterValues

        single_transaction = self.single_transaction_check.get_active()
        #dump_views = self.dump_view_check.get_active()
        sel_index = self.dump_type_selector.get_selected_index()
        
        skip_data = True if sel_index == 2 else False
        skip_table_structure = True if sel_index == 1 else False
        # For mysqldump >= 8.0.2 there is column-statistic arg that cause issue while executing on MySQL Server version <= 5.7.
        # To avoid that we force add '--column-statistics=0' to mysqldump args.
        skip_column_statistics = True if get_mysqldump_version() > Version(8, 0, 2) and self.owner.ctrl_be.target_version < Version(8, 0, 0) else False
        
        dump_routines = self.dump_routines_check.get_active()
        dump_events = self.dump_events_check.get_active()
        dump_triggers = self.dump_triggers_check.get_active()

        save_to_folder = not self.fileradio.get_active()

        if save_to_folder:
            self.path = self.folder_te.get_string_value()
        else:
            self.path = self.file_te.get_string_value()

        # gather objects to dump
        schemas_to_dump = self.table_list_model.get_objects_to_dump(include_empty_schemas=True)

        tables_to_ignore = self.table_list_model.get_tables_to_ignore()

        if len(schemas_to_dump) == 0:
            self.progress_tab.print_log_message(time.strftime('%X ') + "Nothing to do, no schemas or tables selected." + "\n")
            self.progress_tab.set_start_enabled(True)
            return

        # assemble list of operations/command calls to be performed
        operations = []
        if save_to_folder:
            if not os.path.exists(self.path):
                try:
                    os.makedirs(self.path, mode=0o700)
                except:
                    Utilities.show_error('Error', 'Access to "%s" failed' % self.path, "OK", "", "")
                    self.export_button.set_enabled(True)
                    return
            for schema, tables in schemas_to_dump:
                views = []
                for table in tables:
                    if self.table_list_model.is_view(schema, table):
                        views.append(table)
                    else:
                        title = "Dumping " + schema
                        title += " (%s)" % table
                        # description, object_count, pipe_factory, extra_args, objects
                        args = []
                        if not dump_triggers:
                            args.append('--skip-triggers')
                            
                        if skip_table_structure:
                            args.append('--no-create-info')
                        
                        if skip_column_statistics:
                            args.append('--skip-column-statistics')

                        include_schema = self.include_schema_check.get_active()
                        if skip_data:
                            task = self.TableDumpNoData(schema,table, args, lambda schema=schema,table=table:self.dump_to_folder(schema, table, include_schema))
                        else:
                            task = self.TableDumpData(schema,table, args, lambda schema=schema,table=table:self.dump_to_folder(schema, table, include_schema))
                        operations.append(task)
                # dump everything non-tables to file for routines
                #if views:
                #    task = self.ViewDumpData(schema, views, lambda schema=schema, table=table:self.dump_to_folder(schema, "routines"))
                #    operations.append(task)
                #if dump_events:
                #    task = self.EventDumpData(schema, lambda schema=schema, table=table:self.dump_to_folder(schema, "routines"))
                #    operations.append(task)
                if views or dump_routines or dump_events:
                    args = []
                    if dump_routines:
                        args.append("--routines")
                    if dump_events:
                        args.append("--events")
                    if skip_column_statistics:
                            args.append('--skip-column-statistics')
                    task = self.ViewsRoutinesEventsDumpData(schema, views, args, lambda schema=schema, table=None:self.dump_to_folder(schema, "routines", include_schema))
                    operations.append(task)
        else: # single file
            if not os.path.exists(os.path.dirname(self.path)):
                try:
                    os.makedirs(os.path.dirname(self.path))
                except:
                    Utilities.show_error('Error', 'Access to "%s" failed' % self.path, "OK", "", "")
                    self.export_button.set_enabled(True)
                    return


            # if there is a single schema to dump or single-transaction is off we allow selecting the individual tables, otherwise we need to bulk dump the whole db
            #if (len(schemas_to_dump) != 1 and not single_transaction) or (len(schemas_to_dump) == 1 not self.table_list_model.validate_single_transaction(schemas_to_dump)):
            if len(schemas_to_dump) == 1 or (len(schemas_to_dump) > 1 and (not single_transaction or not self.table_list_model.validate_single_transaction(schemas_to_dump))):
                for schema, tables in schemas_to_dump:
                    # don't list the tables explicitly if everything is dumped
                    # this is to workaround a problem with mysqldump where functions are dumped after
                    # tables if the table names are specified
                    # see bug #14359349
                    title = "Dumping " + schema
                    if set(tables) == set(self.table_list_model.get_tables(schema)):
                        title += " (all tables)"
                    else:
                        title += " (%s)" % ", ".join(tables)

                    objects = [schema]

                    if single_transaction:
                        params = ["--single-transaction=TRUE"]
                    else:
                        params = []

                    if dump_routines:
                        params.append("--routines")

                    if dump_events:
                        params.append("--events")

                    if skip_data or not tables:
                        params.append("--no-data")
                    
                    if skip_column_statistics:
                        params.append('--column-statistics=0')

                    if not tables or skip_table_structure:
                        params.append("--no-create-info=TRUE")

                    if not tables or not dump_triggers:
                        params.append("--skip-triggers")

                    # description, object_count, pipe_factory, extra_args, objects
                    include_schema = self.include_schema_check.get_active()
                    task = DumpThread.TaskData(title, len(tables), params, objects, tables_to_ignore, lambda schema=schema:self.dump_to_file([schema], include_schema))
                    operations.append(task)
#                    operations.append((title, len(tables), lambda schema=schema:self.dump_to_file([schema]), params, objects))
            else:
                params = []
                schema_names = [s[0] for s in schemas_to_dump]
                count = sum([len(s[1]) for s in schemas_to_dump])
                title = "Dumping " + ", ".join(schema_names)
                if dump_routines:
                    params.append("--routines")
                if dump_events:
                    params.append("--events")
                if skip_data:
                    params.append("--no-data")
                if skip_column_statistics:
                    params.append('--column-statistics=0')
                
                if single_transaction:
                    params += ["--single-transaction=TRUE", "--databases"]
                else:
                    params += ["--databases"]
                
                # --databases includes CREATE DATABASE info, so it's not needed for dump_to_file()
                # description, object_count, pipe_factory, extra_args, objects
                include_schema = self.include_schema_check.get_active()
                task = DumpThread.TaskData(title, count, params, schema_names, tables_to_ignore, lambda:self.dump_to_file([], include_schema))
                operations.append(task)
#                operations.append((title, count, lambda:self.dump_to_file([]), params, schema_names))

        if connection_params.driver.name == "MysqlNativeSocket":
            params = {
            "protocol":"pipe" if sys.platform == "win32" else "socket",
            "socket":([conn["socket"]])[0],
            "default-character-set":"utf8",
            "user":conn["userName"]
            }
            if not params["socket"]:
                del params["socket"]
        else:
            params = {
            "host":(tunnel.port and ["localhost"] or [conn["hostName"]])[0],
            "port":(tunnel.port and [str(tunnel.port)] or [conn["port"]])[0],
            "default-character-set":"utf8",
            "user":conn["userName"]
            }
            params["protocol"] = "tcp"
            if not params["port"]:
                del params["port"]
            if not params["host"]:
                del params["host"]
        options = {}
        excludes = ['Show Internal Schemas']
        for key, value in list(self.owner.get_export_options(self.mysqldump_defaults).items()):
            if not key in excludes:
                options[key] = value
        params.update(options)
        cmd = get_path_to_mysqldump()
        if cmd == None:
            self.failed("mysqldump command was not found, please install it or configure it in Edit -> Preferences -> Administration")
            return


        #if cmd[0] != '"':
        #    cmd = '"' + cmd + '"'
        #cmd += " --password="
        args = [cmd, "--password="]
        if conn.get("useSSL", 0):
            if conn.get("sslCert", ""):
                args.append("--ssl-cert=%s" % conn["sslCert"])
            if conn.get("sslCA", ""):
                args.append("--ssl-ca=%s" % conn["sslCA"])
            if conn.get("sslKey", ""):
                args.append("--ssl-key=%s" % conn["sslKey"])
            if conn.get("sslCipher", ""):
                args.append("--ssl-cipher=%s" % conn["sslCipher"])

        # Sets the compatibility parameters if needed
        if self._compatibility_params:
          args.append("--set-gtid-purged=OFF")
        if conn.get("OPT_ENABLE_CLEARTEXT_PLUGIN", ""):
            args.append("--enable-cleartext-plugin")

        for paramname, paramvalue in list(params.items()):
            args.append("--"+paramname+((paramvalue != None and ["="+str(paramvalue)] or [""])[0]))
        cmd = subprocess.list2cmdline(args)
        password = self.get_mysql_password(self.bad_password_detected)
        if password is None:
            self.cancelled("Password Input Cancelled")
            return
        self.progress_tab.did_start()
        self.progress_tab.set_status("Export is running...")

        self.dump_thread = DumpThread(cmd, operations, password, self, (self.progress_tab.logging_lock, self.progress_tab.log_queue))
        self.dump_thread.is_import = False
        self.dump_thread.start()
        self._update_progress_tm = Utilities.add_timeout(float(0.4), self._update_progress)

    def _update_progress(self):
        r = self.update_progress()
        if not r:
            self._update_progress_tm = None
        return r

    def dump_to_file(self, schemanames, include_schema):
        if self.out_pipe == None:
            self.out_pipe = open(self.path, "w")
        if include_schema:
            for schema in schemanames:
                self.out_pipe.write(self.table_list_model.get_schema_sql(schema))
            self.out_pipe.flush()
        return self.out_pipe

    def fail_callback(self):
        fname = self.out_pipe.name
        self.close_pipe()
        os.remove(fname)

    def close_pipe(self):
        if self.out_pipe != None:
            self.out_pipe.close()
            self.out_pipe = None

    def tasks_aborted(self):
        if self.path:
            try:
                os.rename(self.path, self.path+".cancelled")
                self.progress_tab.print_log_message("Partial backup file renamed to %s.cancelled" % self.path)
            except Exception as exc:
                self.progress_tab.print_log_message("Error renaming partial backup file %s: %s" % (self.path, exc))

        self.cancelled(time.strftime('%X ') + "Aborted by User")

    def tasks_completed(self):
        self.folder_te.set_value(self.find_available_path(self.folder_te.get_string_value()))
        self.file_te.set_value(self.find_available_path(self.file_te.get_string_value()))
        logmsg = time.strftime('%X ') + "Export of %s has finished" % self.path
        if self.dump_thread.error_count > 0:
            self.progress_tab.set_status("Export Completed With %i Errors" % self.dump_thread.error_count)
            logmsg += " with %i errors" % self.dump_thread.error_count
        else:
            self.progress_tab.set_status("Export Completed")

        self.progress_tab.print_log_message(logmsg)
        self.progress_tab.did_complete()


####################################################################################################
## Options
####################################################################################################

class WbAdminExportOptionsTab(mforms.Box):
    class Check_option_model:
        def __init__(self,optname,checkbox,default):
            self.optname = optname
            self.checkbox = checkbox
            self.default = default

        def get_option(self, defaults):
            is_bool_option = self.optname in defaults
            value = self.checkbox.get_active() and "TRUE" or "FALSE"
            if is_bool_option:
                if defaults[self.optname] != value:
                    return {self.optname: value}
                return {}
            else:
                if self.default == "TRUE" and not self.checkbox.get_active():
                    return {"skip-"+self.optname:"TRUE"}
                else:
                    return {self.optname:(self.checkbox.get_active() and ["TRUE"] or ["FALSE"])[0]}

        def set_option(self, value):
            if value in ("TRUE", "FALSE"):
                self.checkbox.set_active(value == "TRUE")
            else:
                self.checkbox.set_active(value)
            self.checkbox.call_clicked_callback()

    class Text_option_model:
        def __init__(self, optname, textentry, default):
            self.optname = optname
            self.entry = textentry
            self.default = default

        def get_option(self, defaults):
            if self.entry.get_string_value() == self.default:
                return {}
            return {self.optname:self.entry.get_string_value() or self.default}

        def set_option(self, value):
            self.entry.set_value(value)

    def __init__(self, target_version, defaults_from_mysqldump):
        mforms.Box.__init__(self, False)
        self.set_managed()
        self.set_release_on_add()

        mysqldump_version = get_mysqldump_version()
        self.options = {}
        button_box = newBox(True)
        button_box.set_padding(8)
        button_box.set_spacing(12)
        self.restore_defaults_button = newButton()
        self.restore_defaults_button.set_text('Restore Defaults')
        self.restore_defaults_button.add_clicked_callback(self.restore_default_options)
        button_box.add_end(self.restore_defaults_button, False)
        self.add_end(button_box, False)
        outerbox = newBox(False)
        outerbox.set_padding(8)
        outerbox.set_spacing(12)
        for groupname, options in reversed(list(wb_admin_export_options.export_options.items())):
            box = newBox(False)
            box.set_padding(8)
            box.set_spacing(8)
            panel = newPanel(mforms.TitledBoxPanel)
            panel.set_title(groupname)
            panel.set_name(groupname)
#            print groupname
            for optname, option_info in reversed(list(options.items())):
                option_type = "BOOL"
                if len(option_info) == 2:
                    (option, default) = option_info
                elif len(option_info) == 4: # includes type and (min_version, max_version) tuple
                    (option, default, option_type, (min_version, max_version)) = option_info
                    if min_version and target_version:
                        if not target_version.is_supported_mysql_version_at_least(Version.fromstr(min_version)):
                            log_debug("Skip option %s because it's for version %s\n" % (optname, min_version))
                            continue
                    if max_version and target_version:
                        if target_version.is_supported_mysql_version_at_least(Version.fromstr(max_version)):
                            log_debug("Skip option %s because it's deprecated in version %s\n" % (optname, max_version))
                            continue
                    if min_version and mysqldump_version < min_version:
                            log_debug("Skip option %s because it's for mysqldump %s\n" % (optname, min_version))
                            continue
                    if max_version and mysqldump_version > max_version:
                            log_debug("Skip option %s because it's deprecated in mysqldump %s\n" % (optname, max_version))
                            continue

                exlude = ['column-statistics']
                # get the default value from mysqldump --help, if we don't have that data, use the stored default
                if optname not in exlude or get_mysqldump_version() == target_version:
                    default = defaults_from_mysqldump.get(optname, default)

                if option_type == "BOOL":
                    checkbox = newCheckBox()
                    checkbox.set_text("%s - %s"% (optname, option))
                    checkbox.set_name(optname)
                    checkbox.set_active(default == "TRUE")
                    box.add(checkbox, False, True)
                    self.options[optname] = self.Check_option_model(optname,checkbox,default)
                else:
                    hbox = newBox(True)
                    hbox.set_spacing(4)
                    label = newLabel("%s - %s"% (optname, option))
                    hbox.add(label, False, True)
                    entry = newTextEntry()
                    entry.set_name(optname)
                    hbox.add(entry, True, True)
                    entry.set_value(default)
                    box.add(hbox, False, True)
                    self.options[optname] = self.Text_option_model(optname,entry,default)

            if groupname == "Other":
                max_allowed_packet_box = newBox(True)
                self.max_allowed_packet_te = newTextEntry()
                self.max_allowed_packet_te.set_value("1G")
                self.max_allowed_packet_te.set_size(40, -1)
                label = newLabel(" The maximum size of one packet or any generated/intermediate string. ")
                max_allowed_packet_box.add(label,False,False)
                max_allowed_packet_box.add(self.max_allowed_packet_te,False,True)
                max_allowed_packet_box.add(newBox(True),True,True)
                max_allowed_packet_box.add(newBox(True),True,True)
                max_allowed_packet_box.add(newBox(True),True,True)
                box.add(max_allowed_packet_box,False,True)
                self.options['max_allowed_packet'] = self.Text_option_model('max_allowed_packet', self.max_allowed_packet_te, "1G")
            panel.add(box)
            outerbox.add(panel, False, True)
        scrollpan = newScrollPanel(mforms.ScrollPanelNoFlags)
        scrollpan.add(outerbox)
        self.add(scrollpan, True, True)

    def get_lock_tables(self):
        return self.options["lock-tables"].get_option({'lock-tables': 'TRUE'})

    def set_lock_tables(self, value):
        return self.options["lock-tables"].set_option(value)

    def get_options(self, defaults):
        options = {}
        for optname, getter in list(self.options.items()):
            result = getter.get_option(defaults)
            if result != None:
                options.update(result)
        #options.update({"max_allowed_packet":self.max_allowed_packet_te.get_string_value()})
        return options

    def set_options(self, values):
        for k, v in list(values.items()):
            if k in self.options:
                self.options[k].set_option(v)

    def restore_default_options(self):
        for option in list(self.options.values()):
            option.set_option(option.default)

    def add_clicked_callback_to_checkbox(self, optname, callback_function):
        opt = self.options[optname]
        if opt:
          opt.checkbox.add_clicked_callback(callback_function)

####################################################################################################


class WbAdminProgressTab(mforms.Box):
    def __init__(self, owner_tab, is_export):
        mforms.Box.__init__(self, False)
        self.set_managed()
        self.set_release_on_add()
        self.set_spacing(12)
        self.set_padding(8)
        self.owner_tab = owner_tab
        self.operation_tab = None
        self.is_export = is_export

        self.logging_lock = _thread.allocate_lock()
        self.log_queue = deque([])

        statusbox = newBox(False)
        statusbox.set_spacing(2)
        self.dump_progressbar = newProgressBar()
        self.dump_progressbar.set_name("Progress")
        self.statlabel = newLabel("")
        statusbox.set_size(400, -1)
        if is_export:
            self.hintlabel = newLabel("Press [Start Export] to start...")
        else:
            self.hintlabel = newLabel("Press [Start Import] to start...")
        self.hintlabel.set_name("Press to Start")
        statusbox.add(self.hintlabel, False, True)
        statusbox.add(self.dump_progressbar, False, True)
        label = newLabel("Status:")
        label.set_name("Status")
        statusbox.add(label, False, True)
        statusbox.add(self.statlabel, False, True)

        self.progress_log = newTextBox(mforms.VerticalScrollBar)
        self.progress_log.set_name("Log Entry")
        self.progress_log.set_read_only(True)

        self.add(statusbox, False, True)

        label = newLabel("Log:")
        label.set_name("Log")
        self.add(label, False, True)
        self.add(self.progress_log, True, True)

        box = newBox(True)
        self.add(box, False, True)

        box.set_spacing(8)
        box.set_padding(0)

        self.export_button = newButton()
        if is_export:
            self.export_button.set_text("Start Export")
            self.export_button.set_name("Start Export")
        else:
            self.export_button.set_text("Start Import")
            self.export_button.set_name("Start Import")
            self.export_button.set_enabled(False)

        box.add_end(self.export_button, False, True)
        self.export_button.add_clicked_callback(self.start)

        self.stop_button = newButton()
        self.stop_button.set_text("Stop")
        self.stop_button.set_name("Stop")
        self.stop_button.set_enabled(False)
        self.stop_button.add_clicked_callback(self.stop)
        box.add_end(self.stop_button, False, True)

    def set_progress(self, progress, progress_text):
        self.statlabel.set_text(progress_text)
        self.dump_progressbar.set_value(progress)

    def set_start_enabled(self, flag):
        self.export_button.set_enabled(bool(flag))
        self.operation_tab.export_button.set_enabled(bool(flag))

    def set_status(self, text):
        self.hintlabel.set_text(text)
        self.operation_tab.statlabel.set_text(text)

    def flush_queued_logs(self):
        self.logging_lock.acquire()
        while len(self.log_queue) > 0:
            self.progress_log.append_text_and_scroll(self.log_queue.popleft()+"\n", True)
        self.logging_lock.release()

    def print_log_message(self, message):
        if mforms.Utilities.in_main_thread():
            self.progress_log.append_text_and_scroll(message+"\n", True)
        else:
            self.logging_lock.acquire()
            self.log_queue.append(message+"\n")
            self.logging_lock.release()

    def start(self):
        self.operation_tab.start()

    def stop(self):
        self.operation_tab.stop()

    def did_start(self):
        self.owner_tab.switch_to_progress()
        self.set_start_enabled(False)
        self.stop_button.set_enabled(True)
        self.set_status("Export running...")

    def did_complete(self):
        self.set_start_enabled(True)
        self.stop_button.set_enabled(False)
        self.print_log_message("\n\n\n")
        if self.is_export:
            self.export_button.set_text("Export Again")
        else:
            self.export_button.set_text("Import Again")

    def did_fail(self, message):
        self.progress_log.append_text_and_scroll(message+"\n", True)
        self.set_status("Operation Failed")
        self.set_start_enabled(True)
        self.stop_button.set_enabled(False)

    def did_cancel(self, message):
        self.progress_log.append_text_and_scroll(message+"\n", True)
        self.set_status("Operation Cancelled")
        self.dump_progressbar.set_value(0)
        self.set_start_enabled(True)
        self.stop_button.set_enabled(False)

    def close(self):
        pass


####################################################################################################

class WbAdminExport(WbAdminTabBase):
    @classmethod
    def wba_register(cls, admin_context):
        admin_context.register_page(cls, "Management", "Data Export", "Data Export")

    @classmethod
    def identifier(cls):
        return "admin_export"

    def __init__(self, ctrl_be, instance_info, main_view):
        WbAdminTabBase.__init__(self, ctrl_be, instance_info, main_view)
        
        self.set_name("Administration - Data Export/Import")
        self.showing_options = False
        
        self.add_validation(WbAdminValidationConnection(ctrl_be))

        self.advanced_options_btn = mforms.newButton()
        self.advanced_options_btn.set_name("Toggle Advanced Options")
        self.advanced_options_btn.set_text("Advanced Options...")
        self.advanced_options_btn.add_clicked_callback(self.show_options)

        self.set_header(self.create_standard_header("title_export.png", self.instance_info.name, "Data Export", self.advanced_options_btn))
        
        self.export_tab = None
        self.progress_tab = None

    def switch_to_progress(self):
        self.tabview.set_active_tab(1)

    def show_options(self):
        self.showing_options = not self.showing_options
        if self.showing_options:
            self.tabview.show(False)
            self.options_tab.show(True)
            self.advanced_options_btn.set_text("< Return")
        else:
            self.tabview.show(True)
            self.options_tab.show(False)
            self.advanced_options_btn.set_text("Advanced Options...")

    def validation_failed_notification(self, failed_validation):
        self.advanced_options_btn.show(False)

    def validation_successful_notification(self):
        self.advanced_options_btn.show(True)

    def create_ui(self):
        self.ui_box = mforms.newBox(False)

        self.tabview = newTabView(False)
        self.tabview.set_name("Import/Export Tab Panel")
        self.ui_box.add(self.tabview, True, True)
        self.tabview.show(False)

        self.progress_tab = WbAdminProgressTab(self, True)

        self.export_tab = WbAdminExportTab(self, self.instance_info, self.progress_tab)
        self.tabview.add_page(self.export_tab, "Object Selection")

        self.options_tab = WbAdminExportOptionsTab(self.ctrl_be.target_version, self.export_tab.mysqldump_defaults)
        self.ui_box.add(self.options_tab, True, True)
        self.options_tab.show(False)
        
        self.options_tab.add_clicked_callback_to_checkbox("Show Internal Schemas", self.show_internal_schemas_changed)

        self.tabview.add_page(self.progress_tab, "Export Progress")

        self.tabview.show(True)
        self.recall_options()
        self.export_tab.refresh_table_list()
        return self.ui_box

    def shutdown(self): # called when admin tab is closed
        self.remember_options()
        if self.ui_created():
            if self.export_tab:
                self.export_tab.close()
            if self.progress_tab:
                self.progress_tab.close()

    def get_lock_tables(self):
        return self.options_tab.get_lock_tables()

    def set_lock_tables(self, value):
        return self.options_tab.set_lock_tables(value)

    def get_export_options(self, defaults):
        options = self.options_tab.get_options(defaults)
        return options

    def remember_options(self):
        if self.ui_created() and self.export_tab:
            dic = grt.root.wb.options.options
            dic["wb.admin.export:exportType"] = self.export_tab.folderradio.get_active() and "folder" or "file"
            dic["wb.admin.export:selectedFolder"] = self.export_tab.folder_te.get_string_value()
            dic["wb.admin.export:selectedFile"] = self.export_tab.file_te.get_string_value()
            dic["wb.admin.export:singleTransaction"] = self.export_tab.single_transaction_check.get_active()
            dic["wb.admin.export:dumpRoutines"] = self.export_tab.dump_routines_check.get_active()
            dic["wb.admin.export:dumpEvents"] = self.export_tab.dump_events_check.get_active()
            dic["wb.admin.export:dumpTriggers"] = self.export_tab.dump_triggers_check.get_active()
            dic["wb.admin.export:skipData"] = self.export_tab.dump_type_selector.get_selected_index()
            for key, value in list(self.get_export_options({}).items()):
                dic["wb.admin.export.option:"+key] = value

    def recall_options(self):
        dic = grt.root.wb.options.options
        if "wb.admin.export:exportType" in dic:
            if dic["wb.admin.export:exportType"] == "folder":
                self.export_tab.folderradio.set_active(True)
            else:
                self.export_tab.fileradio.set_active(True)
        self.export_tab.set_save_option()
#        if dic.has_key("wb.admin.export:selectedFolder"):
#            self.export_tab.folder_te.set_value(dic["wb.admin.export:selectedFolder"])
#        if dic.has_key("wb.admin.export:selectedFile"):
#            self.export_tab.file_te.set_value(dic["wb.admin.export:selectedFile"])
        if "wb.admin.export:singleTransaction" in dic:
            self.export_tab.single_transaction_check.set_active(dic["wb.admin.export:singleTransaction"] != 0)
        if "wb.admin.export:dumpRoutines" in dic:
            self.export_tab.dump_routines_check.set_active(dic["wb.admin.export:dumpRoutines"] != 0)
        if "wb.admin.export:dumpEvents" in dic:
            self.export_tab.dump_events_check.set_active(dic["wb.admin.export:dumpEvents"] != 0)
        if "wb.admin.export:dumpTriggers" in dic:
            self.export_tab.dump_triggers_check.set_active(dic["wb.admin.export:dumpTriggers"] != 0)
        if "wb.admin.export:skipData" in dic:
            self.export_tab.dump_type_selector.set_selected(dic["wb.admin.export:skipData"] != 0)
        values = {}
        for key in list(self.get_export_options({}).keys()):
            if "wb.admin.export.option:"+key in dic:
                values[key] = dic["wb.admin.export.option:"+key]
        self.options_tab.set_options(values)

    def show_internal_schemas_changed(self):
        self.export_tab.set_show_internal_schemas(self.get_export_options({})['Show Internal Schemas'] == 'TRUE')
        self.export_tab.refresh_table_list()


####################################################################################################

class WbAdminImport(WbAdminTabBase):
    def __init__(self, ctrl_be, instance_info, main_view):
        WbAdminTabBase.__init__(self, ctrl_be, instance_info, main_view)
        self.set_name("Administration - Data Export/Import")
        self.add_validation(WbAdminValidationConnection(ctrl_be))
        self.set_standard_header("title_import.png", self.instance_info.name, "Data Import")
        
        self.progress_tab = None
        self.import_tab = None
        self.tabview = None

    @classmethod
    def wba_register(cls, admin_context):
        admin_context.register_page(cls, "Management", "Data Import/Restore", "Data Import and Export")

    @classmethod
    def identifier(cls):
        return "admin_restore_data"

    def shutdown(self):
        if self.ui_created():
            if self.import_tab:
                self.import_tab.close()
            if self.progress_tab:
                self.progress_tab.close()


    def switch_to_progress(self):
        self.tabview.set_active_tab(1)

    def create_ui(self):        
        self.tabview = newTabView(False)
        self.tabview.show(False)

        self.progress_tab = WbAdminProgressTab(self, False)
        self.import_tab = WbAdminImportTab(self, self.instance_info, self.progress_tab)
        self.tabview.add_page(self.import_tab, "Import from Disk")

        self.tabview.add_page(self.progress_tab, "Import Progress")
        self.tabview.show(True)

        return self.tabview
