TreeStoreモデルのクレアリング時にGtk TreeSelectionの選択を解除します

Question

Python-gtk-3-tutorialに従い、Gtk TreeViewを使用して簡単なファイルブラウザーを実装しました。それはかなりうまく機能しますが、私の問題は、初期化の時点で、TreeViewの最初の項目がデフォルトですでに選択されていることです。

以下を使用してTreeSelectionを初期化します。

treeSelection = treeView.get_selection()

次に、選択したツリーをコールバック関数に接続します。

treeSelection.connect("changed", treeSelectionChanged) def treeSelectionChanged(treeSelection): treeModel, treeIter = treeSelection.get_selected() if treeIter != None: print "You selected", treeModel[treeIter][0]

アプリが起動すると、TreeViewの最初のエントリが既に選択されており、その名前が出力されます。データを再読み込みしてツリーモデルをクリアすると（treeStore.clear（））TreeViewの「変更」に対する応答も取得され、TreeViewの他のアイテムの名前も出力されますでる。

TreeStoreをクリアする前に、デフォルトで行われた選択を解除し、すべての項目を選択解除する方法がわかりません。方法がわかりませんでした。誰かが私の間違いを指摘してくれませんか？コードの例を次に示します。

#!/usr/bin/python import os, stat from gi.repository import Gtk from gi.repository.GdkPixbuf import Pixbuf class MainWindow(Gtk.Window): def __init__(self): Gtk.Window.__init__(self, title="Simple Photo Importer", default_width = 400,default_height = 600) # initialize new Gtk box container self.fileSystemTreeBox = Gtk.Box.new(Gtk.Orientation.VERTICAL, 5) self.add(self.fileSystemTreeBox) # initialize the filesystem treestore self.fileSystemTreeStore = Gtk.TreeStore(str, Pixbuf, str, bool) # populate the tree store self.populateFileSystemTreeStore(self.fileSystemTreeStore, '/home/karlitos') # initialize the TreeView self.fileSystemTreeView = Gtk.TreeView(self.fileSystemTreeStore)#, default_width = 400,default_height = 600) self.fileSystemTreeView.set_headers_visible(False) #self.fileSystemTreeView.columns_autosize() # Create a TreeViewColumn treeViewCol = Gtk.TreeViewColumn(title=None) treeViewCol.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE) #treeViewCol.expand = True # Create a column cell to display text colCellText = Gtk.CellRendererText() # Create a column cell to display an image colCellImg = Gtk.CellRendererPixbuf() # Add the cells to the column treeViewCol.pack_start(colCellImg, False) treeViewCol.pack_start(colCellText, True) # Bind the text cell to column 0 of the tree's model treeViewCol.add_attribute(colCellText, "text", 0) # Bind the image cell to column 1 of the tree's model treeViewCol.add_attribute(colCellImg, "pixbuf", 1) # Append the columns to the TreeView self.fileSystemTreeView.append_column(treeViewCol) # add "on expand" callback self.fileSystemTreeView.connect("row-expanded", self.onRowExpanded) # add "on collapse" callback self.fileSystemTreeView.connect("row-collapsed", self.onRowCollapsed) # add tree view selection fileSystemTreeSelection = self.fileSystemTreeView.get_selection() fileSystemTreeSelection.connect("changed", self.fileSystemTreeSelectionChanged) # add scroll view self.scrollView = Gtk.ScrolledWindow() self.scrollView.add(self.fileSystemTreeView) # append the scrollView to the window (this) #self.add(self.scrollView) self.fileSystemTreeBox.pack_start(self.scrollView, True, True, 0) # add a button for selecting different folder self.readNewDirButton = Gtk.Button(label="Read new directory") self.readNewDirButton.connect("clicked", self.readNewDirectory) #self.add(self.readNewDirButton) self.fileSystemTreeBox.pack_start(self.readNewDirButton, False, False, 0) def populateFileSystemTreeStore(self, treeStore, path, parent=None): appendHiddenItems = False folders = [] files = [] # iterate over the items in the path for item in os.listdir(path): # skip item if it's name brgiins with '.' and appendHiddenItems ist set to 'false' if not appendHiddenItems and item[0] == '.': continue # Get the absolute path of the item itemFullname = os.path.join(path, item) # Extract metadata from the item itemMetaData = os.stat(itemFullname) # Determine if the item is a folder itemIsFolder = stat.S_ISDIR(itemMetaData.st_mode) # Generate an icon from the default icon theme itemIcon = Gtk.IconTheme.get_default().load_icon("folder" if itemIsFolder else "empty", 22, 0) # Append the item with corresponding metadata to related arrays if itemIsFolder: folders.append([item, itemIcon, itemFullname, itemIsFolder]) else: files.append([item, itemIcon, itemFullname, itemIsFolder]) # append dummy when no entries in the current folder if not folders and not files: treeStore.append(parent, [None, None, None, None]) else: for folderEntry in sorted(folders): # append the folders currentIter = treeStore.append(parent, folderEntry) # append the dummy nodes to the folders treeStore.append(currentIter, [None, None, None, None]) for fileEntry in sorted(files): treeStore.append(parent, fileEntry) def onRowExpanded(self, treeView, treeIter, treePath): # get the associated model treeStore = treeView.get_model() # get the full path of the position newPath = treeStore.get_value(treeIter, 2) # populate the subtree on curent position self.populateFileSystemTreeStore(treeStore, newPath, treeIter) # remove the first child (dummy node) treeStore.remove(treeStore.iter_children(treeIter)) def onRowCollapsed(self, treeView, treeIter, treePath): # get the associated model treeStore = treeView.get_model() # get the iterator of the first child currentChildIter = treeStore.iter_children(treeIter) # loop as long as some childern exist while currentChildIter: # remove the first child treeStore.remove(currentChildIter) # refresh the iterator of the next child currentChildIter = treeStore.iter_children(treeIter) # append dummy node treeStore.append(treeIter, [None, None, None, None]) def readNewDirectory(self, widget): # initialize the open directory dialog openDirectoryDialog = Gtk.FileChooserDialog("Please choose a folder", self, Gtk.FileChooserAction.SELECT_FOLDER, (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, "Select", Gtk.ResponseType.OK)) openDirectoryDialog.set_default_size(800, 400) # initialize the response openDirectoryResponse = openDirectoryDialog.run() if openDirectoryResponse == Gtk.ResponseType.OK: self.fileSystemTreeStore.clear() self.populateFileSystemTreeStore(self.fileSystemTreeStore, openDirectoryDialog.get_filename()) #Elif openDirectoryResponse == Gtk.ResponseType.CANCEL: #do something openDirectoryDialog.destroy() def fileSystemTreeSelectionChanged(self, fileSystemTreeSelection): fileSystemTreeModel, fileSystemTreeIter = fileSystemTreeSelection.get_selected()#_rows() if fileSystemTreeIter != None: print "You selected", fileSystemTreeModel[fileSystemTreeIter][0] win = MainWindow() win.connect("delete-event", Gtk.main_quit) win.show_all() Gtk.main()

user2461236 · Answer

あなたが求めることを正確に行う関数がありますが、__init__の例では、この関数はunselect_all、およびGtk.TreeSelectionに属します。そこで、私は彼の例を編集するために川床を取り上げました。

英語を許して、Google翻訳者から抽出されます。

#!/usr/bin/python import os, stat from gi.repository import Gtk from gi.repository.GdkPixbuf import Pixbuf class MainWindow(Gtk.Window): def __init__(self): Gtk.Window.__init__(self, title="Simple Photo Importer", default_width = 400,default_height = 600) # initialize new Gtk box container self.firstSelection = True self.fileSystemTreeBox = Gtk.Box.new(Gtk.Orientation.VERTICAL, 5) self.add(self.fileSystemTreeBox) # initialize the filesystem treestore self.fileSystemTreeStore = Gtk.TreeStore(str, Pixbuf, str, bool) # populate the tree store self.populateFileSystemTreeStore(self.fileSystemTreeStore, os.path.expanduser('~')) # initialize the TreeView self.fileSystemTreeView = Gtk.TreeView(self.fileSystemTreeStore)#, default_width = 400,default_height = 600) self.fileSystemTreeView.set_headers_visible(False) #self.fileSystemTreeView.columns_autosize() # Create a TreeViewColumn treeViewCol = Gtk.TreeViewColumn(title=None) treeViewCol.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE) #treeViewCol.expand = True # Create a column cell to display text colCellText = Gtk.CellRendererText() # Create a column cell to display an image colCellImg = Gtk.CellRendererPixbuf() # Add the cells to the column treeViewCol.pack_start(colCellImg, False) treeViewCol.pack_start(colCellText, True) # Bind the text cell to column 0 of the tree's model treeViewCol.add_attribute(colCellText, "text", 0) # Bind the image cell to column 1 of the tree's model treeViewCol.add_attribute(colCellImg, "pixbuf", 1) # Append the columns to the TreeView self.fileSystemTreeView.append_column(treeViewCol) # add "on expand" callback self.fileSystemTreeView.connect("row-expanded", self.onRowExpanded) # add "on collapse" callback self.fileSystemTreeView.connect("row-collapsed", self.onRowCollapsed) # add tree view selection fileSystemTreeSelection = self.fileSystemTreeView.get_selection() fileSystemTreeSelection.connect("changed", self.fileSystemTreeSelectionChanged) # add scroll view self.scrollView = Gtk.ScrolledWindow() self.scrollView.add(self.fileSystemTreeView) # append the scrollView to the window (this) #self.add(self.scrollView) self.fileSystemTreeBox.pack_start(self.scrollView, True, True, 0) # add a button for selecting different folder self.readNewDirButton = Gtk.Button(label="Read new directory") self.readNewDirButton.connect("clicked", self.readNewDirectory) #self.add(self.readNewDirButton) self.fileSystemTreeBox.pack_start(self.readNewDirButton, False, False, 0) def populateFileSystemTreeStore(self, treeStore, path, parent=None): appendHiddenItems = False folders = [] files = [] # iterate over the items in the path for item in os.listdir(path): # skip item if it's name brgiins with '.' and appendHiddenItems ist set to 'false' if not appendHiddenItems and item[0] == '.': continue # Get the absolute path of the item itemFullname = os.path.join(path, item) # Extract metadata from the item itemMetaData = os.stat(itemFullname) # Determine if the item is a folder itemIsFolder = stat.S_ISDIR(itemMetaData.st_mode) # Generate an icon from the default icon theme itemIcon = Gtk.IconTheme.get_default().load_icon("folder" if itemIsFolder else "empty", 22, 0) # Append the item with corresponding metadata to related arrays if itemIsFolder: folders.append([item, itemIcon, itemFullname, itemIsFolder]) else: files.append([item, itemIcon, itemFullname, itemIsFolder]) # append dummy when no entries in the current folder if not folders and not files: treeStore.append(parent, [None, None, None, None]) else: for folderEntry in sorted(folders): # append the folders currentIter = treeStore.append(parent, folderEntry) # append the dummy nodes to the folders treeStore.append(currentIter, [None, None, None, None]) for fileEntry in sorted(files): treeStore.append(parent, fileEntry) def onRowExpanded(self, treeView, treeIter, treePath): # get the associated model treeStore = treeView.get_model() # get the full path of the position newPath = treeStore.get_value(treeIter, 2) # populate the subtree on curent position self.populateFileSystemTreeStore(treeStore, newPath, treeIter) # remove the first child (dummy node) treeStore.remove(treeStore.iter_children(treeIter)) def onRowCollapsed(self, treeView, treeIter, treePath): # get the associated model treeStore = treeView.get_model() # get the iterator of the first child currentChildIter = treeStore.iter_children(treeIter) # loop as long as some childern exist while currentChildIter: # remove the first child treeStore.remove(currentChildIter) # refresh the iterator of the next child currentChildIter = treeStore.iter_children(treeIter) # append dummy node treeStore.append(treeIter, [None, None, None, None]) def readNewDirectory(self, widget): # initialize the open directory dialog openDirectoryDialog = Gtk.FileChooserDialog("Please choose a folder", self, Gtk.FileChooserAction.SELECT_FOLDER, (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, "Select", Gtk.ResponseType.OK)) openDirectoryDialog.set_default_size(800, 400) # initialize the response openDirectoryResponse = openDirectoryDialog.run() if openDirectoryResponse == Gtk.ResponseType.OK: self.fileSystemTreeStore.clear() self.populateFileSystemTreeStore(self.fileSystemTreeStore, openDirectoryDialog.get_filename()) #Elif openDirectoryResponse == Gtk.ResponseType.CANCEL: #do something openDirectoryDialog.destroy() def fileSystemTreeSelectionChanged(self, fileSystemTreeSelection): fileSystemTreeModel, fileSystemTreeIter = fileSystemTreeSelection.get_selected()#_rows() if fileSystemTreeIter != None and not self.firstSelection: print "You selected", fileSystemTreeModel[fileSystemTreeIter][0] Elif self.firstSelection: fileSystemTreeSelection.unselect_all() self.firstSelection = False win = MainWindow() win.connect("delete-event", Gtk.main_quit) win.show_all() Gtk.main()