#----------------------------------------------------------------------------
# Name:         ExtensionService.py
# Purpose:      Extension Service for IDE
#
# Author:       Peter Yared
#
# Created:      5/23/05
# CVS-ID:       $ID:$
# Copyright:    (c) 2005-2006 ActiveGrid, Inc.
# License:      wxWindows License
#----------------------------------------------------------------------------

import wx
import wx.lib.pydocview
import MessageService
import ProjectEditor
import os
import os.path
import activegrid.util.xmlutils as xmlutils
_ = wx.GetTranslation


#----------------------------------------------------------------------------
# Constants
#----------------------------------------------------------------------------
SPACE = 10
HALF_SPACE = 5


#----------------------------------------------------------------------------
# Classes
#----------------------------------------------------------------------------

class Extension:


    def __init__(self, menuItemName=None):
        self.menuItemName = menuItemName
        self.id = 0
        self.menuItemDesc = ''
        self.command = ''
        self.commandPreArgs = ''
        self.commandPostArgs = ''
        self.fileExt = None
        self.opOnSelectedFile = True


class ExtensionService(wx.lib.pydocview.DocService):

    EXTENSIONS_KEY = "/AG_Extensions"

    def __init__(self):
        self.LoadExtensions()


    def __getExtensionKeyName(extensionName):
        return "%s/%s" % (ExtensionService.EXTENSIONS_KEY, extensionName)


    __getExtensionKeyName = staticmethod(__getExtensionKeyName)


    def LoadExtensions(self):
        self._extensions = []

        extensionNames = []
        config = wx.ConfigBase_Get()
        path = config.GetPath()
        try:
            config.SetPath(ExtensionService.EXTENSIONS_KEY)
            cont, value, index = config.GetFirstEntry()
            while cont:
                extensionNames.append(value)
                cont, value, index = config.GetNextEntry(index)
        finally:
            config.SetPath(path)

        for extensionName in extensionNames:
            extensionData = config.Read(self.__getExtensionKeyName(extensionName))
            if extensionData:
                extension = xmlutils.unmarshal(extensionData.encode('utf-8'))
                self._extensions.append(extension)


    def SaveExtensions(self):
        config = wx.ConfigBase_Get()
        config.DeleteGroup(ExtensionService.EXTENSIONS_KEY)
        for extension in self._extensions:
            config.Write(self.__getExtensionKeyName(extension.menuItemName), xmlutils.marshal(extension))


    def GetExtensions(self):
        return self._extensions


    def SetExtensions(self, extensions):
        self._extensions = extensions


    def CheckSumExtensions(self):
        return xmlutils.marshal(self._extensions)


    def InstallControls(self, frame, menuBar = None, toolBar = None, statusBar = None, document = None):
        toolsMenuIndex = menuBar.FindMenu(_("&Tools"))
        if toolsMenuIndex > -1:
            toolsMenu = menuBar.GetMenu(toolsMenuIndex)
        else:
            toolsMenu = wx.Menu()

        if self._extensions:
            if toolsMenu.GetMenuItems():
                toolsMenu.AppendSeparator()
            for ext in self._extensions:
                # Append a tool menu item for each extension
                ext.id = wx.NewId()
                toolsMenu.Append(ext.id, ext.menuItemName)
                wx.EVT_MENU(frame, ext.id, frame.ProcessEvent)
                wx.EVT_UPDATE_UI(frame, ext.id, frame.ProcessUpdateUIEvent)

        if toolsMenuIndex == -1:
            index = menuBar.FindMenu(_("&Run"))
            if index == -1:
                index = menuBar.FindMenu(_("&Project"))
            if index == -1:
                index = menuBar.FindMenu(_("&Format"))
            if index == -1:
                index = menuBar.FindMenu(_("&View"))
            menuBar.Insert(index + 1, toolsMenu, _("&Tools"))


    def ProcessEvent(self, event):
        id = event.GetId()
        for extension in self._extensions:
            if id == extension.id:
                self.OnExecuteExtension(extension)
                return True
        return False


    def ProcessUpdateUIEvent(self, event):
        id = event.GetId()
        for extension in self._extensions:
            if id == extension.id:
                if extension.fileExt:
                    doc = wx.GetApp().GetDocumentManager().GetCurrentDocument()
                    if doc and '*' in extension.fileExt:
                        event.Enable(True)
                        return True
                    if doc:
                        for fileExt in extension.fileExt:
                            if fileExt in doc.GetDocumentTemplate().GetFileFilter():
                                event.Enable(True)
                                return True
                        if extension.opOnSelectedFile and isinstance(doc, ProjectEditor.ProjectDocument):
                            filename = doc.GetFirstView().GetSelectedFile()
                            if filename:
                                template = wx.GetApp().GetDocumentManager().FindTemplateForPath(filename)
                                for fileExt in extension.fileExt:
                                    if fileExt in template.GetFileFilter():
                                        event.Enable(True)
                                        return True
                    event.Enable(False)
                    return False
        return False


    def OnExecuteExtension(self, extension):
        if extension.fileExt:
            doc = wx.GetApp().GetDocumentManager().GetCurrentDocument()
            if not doc:
                return
            if extension.opOnSelectedFile and isinstance(doc, ProjectEditor.ProjectDocument):
                filename = doc.GetFirstView().GetSelectedFile()
                if not filename:
                    filename = doc.GetFilename()
            else:
                filename = doc.GetFilename()
            ext = os.path.splitext(filename)[1]
            if not '*' in extension.fileExt:
                if not ext or ext[1:] not in extension.fileExt:
                    return
            cmds = [extension.command]
            if extension.commandPreArgs:
                cmds.append(extension.commandPreArgs)
            cmds.append(filename)
            if extension.commandPostArgs:
                cmds.append(extension.commandPostArgs)
            os.spawnv(os.P_NOWAIT, extension.command, cmds)

        else:
            cmd = extension.command
            if extension.commandPreArgs:
                cmd = cmd + ' ' + extension.commandPreArgs
            if extension.commandPostArgs:
                cmd = cmd + ' ' + extension.commandPostArgs
            f = os.popen(cmd)
            messageService = wx.GetApp().GetService(MessageService.MessageService)
            messageService.ShowWindow()
            view = messageService.GetView()
            for line in f.readlines():
                view.AddLines(line)
            view.GetControl().EnsureCaretVisible()
            f.close()


class ExtensionOptionsPanel(wx.Panel):


    def __init__(self, parent, id):
        wx.Panel.__init__(self, parent, id)

        extOptionsPanelBorderSizer = wx.BoxSizer(wx.VERTICAL)

        extOptionsPanelSizer = wx.BoxSizer(wx.HORIZONTAL)

        extCtrlSizer = wx.BoxSizer(wx.VERTICAL)
        extCtrlSizer.Add(wx.StaticText(self, -1, _("External Tools:")), 0, wx.BOTTOM, HALF_SPACE)
        self._extListBox = wx.ListBox(self, -1, style=wx.LB_SINGLE)
        self.Bind(wx.EVT_LISTBOX, self.OnListBoxSelect, self._extListBox)
        extCtrlSizer.Add(self._extListBox, 1, wx.BOTTOM | wx.EXPAND, SPACE)
        buttonSizer = wx.GridSizer(cols=2, vgap=HALF_SPACE, hgap=HALF_SPACE)
        self._moveUpButton = wx.Button(self, -1, _("Move Up"))
        self.Bind(wx.EVT_BUTTON, self.OnMoveUp, self._moveUpButton)
        buttonSizer.Add(self._moveUpButton, 1, wx.EXPAND)
        self._moveDownButton = wx.Button(self, -1, _("Move Down"))
        self.Bind(wx.EVT_BUTTON, self.OnMoveDown, self._moveDownButton)
        buttonSizer.Add(self._moveDownButton, 1, wx.EXPAND)
        self._addButton = wx.Button(self, wx.ID_ADD)
        self.Bind(wx.EVT_BUTTON, self.OnAdd, self._addButton)
        buttonSizer.Add(self._addButton, 1, wx.EXPAND)
        self._deleteButton = wx.Button(self, wx.ID_DELETE, label=_("Delete")) # get rid of accelerator for letter d in "&Delete"
        self.Bind(wx.EVT_BUTTON, self.OnDelete, self._deleteButton)
        buttonSizer.Add(self._deleteButton, 1, wx.EXPAND)
        extCtrlSizer.Add(buttonSizer, 0, wx.ALIGN_CENTER)
        extOptionsPanelSizer.Add(extCtrlSizer, 0, wx.EXPAND)

        self._extDetailPanel = wx.Panel(self)
        staticBox = wx.StaticBox(self, label=_("Selected External Tool"))
        staticBoxSizer = wx.StaticBoxSizer(staticBox, wx.VERTICAL)

        extDetailSizer = wx.FlexGridSizer(cols=2, vgap=5, hgap=5)
        extDetailSizer.AddGrowableCol(1,1)

        extDetailSizer.Add(wx.StaticText(self._extDetailPanel, -1, _("Menu Item Name:")), flag=wx.ALIGN_CENTER_VERTICAL)
        self._menuItemNameTextCtrl = wx.TextCtrl(self._extDetailPanel, -1, size = (-1, -1))
        extDetailSizer.Add(self._menuItemNameTextCtrl, 0, wx.EXPAND)
        self.Bind(wx.EVT_TEXT, self.SaveCurrentItem, self._menuItemNameTextCtrl)

        extDetailSizer.Add(wx.StaticText(self._extDetailPanel, -1, _("Menu Item Description:")), flag=wx.ALIGN_CENTER_VERTICAL)
        self._menuItemDescTextCtrl = wx.TextCtrl(self._extDetailPanel, -1, size = (-1, -1))
        extDetailSizer.Add(self._menuItemDescTextCtrl, 0, wx.EXPAND)

        extDetailSizer.Add(wx.StaticText(self._extDetailPanel, -1, _("Command Path:")), flag=wx.ALIGN_CENTER_VERTICAL)
        self._commandTextCtrl = wx.TextCtrl(self._extDetailPanel, -1, size = (-1, -1))
        findFileButton = wx.Button(self._extDetailPanel, -1, _("Browse..."))
        def OnBrowseButton(event):
            fileDlg = wx.FileDialog(self, _("Choose an Executable:"), style=wx.OPEN|wx.FILE_MUST_EXIST|wx.HIDE_READONLY|wx.CHANGE_DIR)
            path = self._commandTextCtrl.GetValue()
            if path:
                fileDlg.SetPath(path)
            # fileDlg.CenterOnParent()  # wxBug: caused crash with wx.FileDialog
            if fileDlg.ShowModal() == wx.ID_OK:
                self._commandTextCtrl.SetValue(fileDlg.GetPath())
                self._commandTextCtrl.SetInsertionPointEnd()
                self._commandTextCtrl.SetToolTipString(fileDlg.GetPath())
            fileDlg.Destroy()
        wx.EVT_BUTTON(findFileButton, -1, OnBrowseButton)
        hsizer = wx.BoxSizer(wx.HORIZONTAL)
        hsizer.Add(self._commandTextCtrl, 1, wx.EXPAND)
        hsizer.Add(findFileButton, 0, wx.LEFT, HALF_SPACE)
        extDetailSizer.Add(hsizer, 0, wx.EXPAND)

        extDetailSizer.Add(wx.StaticText(self._extDetailPanel, -1, _("Command Pre Args:")), flag=wx.ALIGN_CENTER_VERTICAL)
        self._commandPreArgsTextCtrl = wx.TextCtrl(self._extDetailPanel, -1, size = (-1, -1))
        extDetailSizer.Add(self._commandPreArgsTextCtrl, 0, wx.EXPAND)

        extDetailSizer.Add(wx.StaticText(self._extDetailPanel, -1, _("Command Post Args:")), flag=wx.ALIGN_CENTER_VERTICAL)
        self._commandPostArgsTextCtrl = wx.TextCtrl(self._extDetailPanel, -1, size = (-1, -1))
        extDetailSizer.Add(self._commandPostArgsTextCtrl, 0, wx.EXPAND)

        extDetailSizer.Add(wx.StaticText(self._extDetailPanel, -1, _("File Extensions:")), flag=wx.ALIGN_CENTER_VERTICAL)
        self._fileExtTextCtrl = wx.TextCtrl(self._extDetailPanel, -1, size = (-1, -1))
        self._fileExtTextCtrl.SetToolTipString(_("""For example: "txt, text" (comma separated) or "*" for all files"""))
        extDetailSizer.Add(self._fileExtTextCtrl, 0, wx.EXPAND)

        self._selFileCtrl = wx.CheckBox(self._extDetailPanel, -1, _("Operate on Selected File"))
        extDetailSizer.Add(self._selFileCtrl, 0, wx.ALIGN_CENTER_VERTICAL|wx.TOP, SPACE)
        self._selFileCtrl.SetToolTipString(_("If focus is in the project, instead of operating on the project file, operate on the selected file."))

        self._extDetailPanel.SetSizer(extDetailSizer)
        staticBoxSizer.Add(self._extDetailPanel, 1, wx.ALL|wx.EXPAND, SPACE)

        extOptionsPanelSizer.Add(staticBoxSizer, 1, wx.LEFT|wx.EXPAND, SPACE)

        extOptionsPanelBorderSizer.Add(extOptionsPanelSizer, 1, wx.ALL|wx.EXPAND, SPACE)
        self.SetSizer(extOptionsPanelBorderSizer)

        if self.PopulateItems():
            self._extListBox.SetSelection(0)
        self.OnListBoxSelect()

        self.Layout()

        parent.AddPage(self, _("External Tools"))


    def OnOK(self, optionsDialog):
        self.SaveCurrentItem()
        extensionsService = wx.GetApp().GetService(ExtensionService)
        extensionsService.SetExtensions(self._extensions)
        extensionsService.SaveExtensions()
        if extensionsService.CheckSumExtensions() != self._oldExtensions:  # see PopulateItems() note about self._oldExtensions
            msgTitle = wx.GetApp().GetAppName()
            if not msgTitle:
                msgTitle = _("Document Options")
            wx.MessageBox(_("Extension changes will not appear until the application is restarted."),
                          msgTitle,
                          wx.OK | wx.ICON_INFORMATION,
                          self.GetParent())


    def PopulateItems(self):
        extensionsService = wx.GetApp().GetService(ExtensionService)
        import copy
        self._extensions = copy.deepcopy(extensionsService.GetExtensions())
        self._oldExtensions = extensionsService.CheckSumExtensions()  # wxBug:  need to make a copy now since the deepcopy reorders fields, so we must compare the prestine copy with the modified copy
        for extension in self._extensions:
            self._extListBox.Append(extension.menuItemName, extension)
        self._currentItem = None
        self._currentItemIndex = -1
        return len(self._extensions)


    def OnListBoxSelect(self, event=None):
        self.SaveCurrentItem()
        if self._extListBox.GetSelection() == wx.NOT_FOUND:
            self._currentItemIndex = -1
            self._currentItem = None
            self._deleteButton.Enable(False)
            self._moveUpButton.Enable(False)
            self._moveDownButton.Enable(False)
        else:
            self._currentItemIndex = self._extListBox.GetSelection()
            self._currentItem = self._extListBox.GetClientData(self._currentItemIndex)
            self._deleteButton.Enable()
            self._moveUpButton.Enable(self._extListBox.GetCount() > 1 and self._currentItemIndex > 0)
            self._moveDownButton.Enable(self._extListBox.GetCount() > 1 and self._currentItemIndex < self._extListBox.GetCount() - 1)
        self.LoadItem(self._currentItem)


    def SaveCurrentItem(self, event=None):
        extension = self._currentItem
        if extension:
            if extension.menuItemName != self._menuItemNameTextCtrl.GetValue():
                extension.menuItemName = self._menuItemNameTextCtrl.GetValue()
                self._extListBox.SetString(self._currentItemIndex, extension.menuItemName)
            extension.menuItemDesc = self._menuItemDescTextCtrl.GetValue()
            extension.command = self._commandTextCtrl.GetValue()
            extension.commandPreArgs = self._commandPreArgsTextCtrl.GetValue()
            extension.commandPostArgs = self._commandPostArgsTextCtrl.GetValue()
            fileExt = self._fileExtTextCtrl.GetValue().replace(' ','')
            if not fileExt:
                extension.fileExt = None
            else:
                extension.fileExt = fileExt.split(',')
            extension.opOnSelectedFile = self._selFileCtrl.GetValue()


    def LoadItem(self, extension):
        if extension:
            self._menuItemDescTextCtrl.SetValue(extension.menuItemDesc or '')
            self._commandTextCtrl.SetValue(extension.command or '')
            self._commandTextCtrl.SetToolTipString(extension.command or '')
            self._commandPreArgsTextCtrl.SetValue(extension.commandPreArgs or '')
            self._commandPostArgsTextCtrl.SetValue(extension.commandPostArgs or '')
            if extension.fileExt:
                list = ""
                for ext in extension.fileExt:
                    if list:
                        list = list + ", "
                    list = list + ext
                self._fileExtTextCtrl.SetValue(list)
            else:
                self._fileExtTextCtrl.SetValue('')
            self._selFileCtrl.SetValue(extension.opOnSelectedFile)
            self._menuItemNameTextCtrl.SetValue(extension.menuItemName or '')  # Do the name last since it triggers the write event that updates the entire item
            self._extDetailPanel.Enable()
        else:
            self._menuItemNameTextCtrl.SetValue('')
            self._menuItemDescTextCtrl.SetValue('')
            self._commandTextCtrl.SetValue('')
            self._commandTextCtrl.SetToolTipString(_("Path to executable"))
            self._commandPreArgsTextCtrl.SetValue('')
            self._commandPostArgsTextCtrl.SetValue('')
            self._fileExtTextCtrl.SetValue('')
            self._selFileCtrl.SetValue(True)
            self._extDetailPanel.Enable(False)


    def OnAdd(self, event):
        self.SaveCurrentItem()
        name = _("Untitled")
        count = 1
        while self._extListBox.FindString(name) != wx.NOT_FOUND:
            count = count + 1
            name = _("Untitled%s") % count
        extension = Extension(name)
        self._extensions.append(extension)
        self._extListBox.Append(extension.menuItemName, extension)
        self._extListBox.SetStringSelection(extension.menuItemName)
        self.OnListBoxSelect()
        self._menuItemNameTextCtrl.SetFocus()
        self._menuItemNameTextCtrl.SetSelection(-1, -1)


    def OnDelete(self, event):
        self._extListBox.Delete(self._currentItemIndex)
        self._extensions.remove(self._currentItem)
        self._currentItemIndex = min(self._currentItemIndex, self._extListBox.GetCount() - 1)
        if self._currentItemIndex > -1:
            self._extListBox.SetSelection(self._currentItemIndex)
        self._currentItem = None  # Don't update it since it no longer exists
        self.OnListBoxSelect()


    def OnMoveUp(self, event):
        itemAboveString = self._extListBox.GetString(self._currentItemIndex - 1)
        itemAboveData = self._extListBox.GetClientData(self._currentItemIndex - 1)
        self._extListBox.Delete(self._currentItemIndex - 1)
        self._extListBox.Insert(itemAboveString, self._currentItemIndex)
        self._extListBox.SetClientData(self._currentItemIndex, itemAboveData)
        self._currentItemIndex = self._currentItemIndex - 1
        self.OnListBoxSelect() # Reset buttons


    def OnMoveDown(self, event):
        itemBelowString = self._extListBox.GetString(self._currentItemIndex + 1)
        itemBelowData = self._extListBox.GetClientData(self._currentItemIndex + 1)
        self._extListBox.Delete(self._currentItemIndex + 1)
        self._extListBox.Insert(itemBelowString, self._currentItemIndex)
        self._extListBox.SetClientData(self._currentItemIndex, itemBelowData)
        self._currentItemIndex = self._currentItemIndex + 1
        self.OnListBoxSelect() # Reset buttons