Python GTK3 - 搜索后以编程方式在 TreeView 中选择节点？-解网

问：

我有一个类函数，它通过搜索子节点进行迭代。如果找到匹配的节点，我想将选择更改为该节点。我的函数返回一个迭代器。我怀疑这是问题的根本原因，但我不确定还有什么可以返回的。所有函数似乎都想要一个.Gtk.TreeStoreGtk.TreeSelectionGtk.TreePath

有没有一种规范的方法在 TreeStore 中查找节点，然后选择它？这似乎是一个常见的用例，但我似乎找不到解释。

def findNodeByDescription( self, desc ):
    root_iterator = self.tree_store.get_iter_first()
    return self.findNodeByDescriptionRecursive( root_iterator, desc )

def findNodeByDescriptionRecursive( self, tree_iter, desc ):
    """ Recursive function to search the tree """
    result = None
    tree_model = self.tree_view.get_model()
    while ( result == None and tree_iter != None ):
        # is it this node?
        if ( tree_model.get_value(tree_iter, 0).description == desc ):
            # found it
            result = tree_iter 
            break
        elif ( self.tree_store.iter_has_child( tree_iter ) ):
            child_iter = self.tree_store.iter_children( tree_iter )
            result = self.findNodeByDescriptionWorker( child_iter, desc )
        tree_iter = self.tree_store.iter_next( tree_iter )
    return result

（注意：我正在使用自定义树节点）

它被称为：

编辑：我从Python GTK常见问题解答中找到了函数中的部分答案。get_path()

EDIT2：使用扩展树节点。我认为以前它是扩展子节点，而不是父节点。所以它被扩大了，但仍然看不见。（我有 3 个深的分支，并找到“中间”分支）。expand_to_path()

def findAndSelectNode( self, text ):
    tree_iter = self.findNodeByDescription( text )
    if ( tree_iter != None ):
        print("###### SELECTING ROW" )
        # THIS EXECUTES, BUT NOTHING HAPPENS?!
        path = self.tree_store.get_path( tree_iter )
        #self.tree_view.expand_row( path, True )  -- doesn't work
        self.tree_view.expand_to_path( path )
        self.tree_view.set_cursor( path )

python-3.x gtk3 gtktree 视图

    def findSelectNode( self, text ):
        # BUG: Only by name for now.
        tree_iter = self.findNodeByDescription( text )
        if ( tree_iter != None ):
            print("###### SELECTING ROW" )
            path = self.tree_store.get_path( tree_iter )
            self.tree_view.expand_to_path( path )               # expand the whole branch
            self.tree_view.get_selection().select_path( path )  # select it

此答案假定您只需要一个选择。

Python GTK3 - 搜索后以编程方式在 TreeView 中选择节点？

Python GTK3 - Programtically selecting a node in TreeView after search?

评论

评论