Python Gtk TreeView ；选择项目时如何刷新列表

我正在制作一个基本的文件管理器，但一直停留在帖子标题中的问题上。 首先，它在一个目录中查找，生成一个项目列表，并将它们附加到 TreeView 列表中。

如果单击子目录，它将成为新的当前目录。我所需要做的就是将它发送回 def 中，它会在其中读取并显示当前目录内容(我认为)。

    import gtk, os 
 
    class PyApp(gtk.Window):  
        def __init__(self): 
            super(PyApp, self).__init__() 
            self.set_size_request(250, 200) 
            self.set_position(gtk.WIN_POS_CENTER) 
            self.connect("destroy", gtk.main_quit) 
            self.set_title("SteveFM") 
            vbox = gtk.VBox(False, 8) 
            sw = gtk.ScrolledWindow() 
            sw.set_shadow_type(gtk.SHADOW_ETCHED_IN) 
            sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC) 
            vbox.pack_start(sw, True, True, 0) 
            store = self.create_model() 
            treeView = gtk.TreeView(store) 
            treeView.connect("row-activated", self.on_activated) 
            treeView.set_rules_hint(True) 
            sw.add(treeView) 
            self.create_columns(treeView)         
            self.add(vbox) 
            self.show_all() 
 
        #  Take the names of files and subdirectories in  
        #  the current directory and sort them into a list for treeview 
 
        def create_model(self): 
            store = gtk.ListStore(str) 
            dirList=os.listdir(os.getcwd()) 
            dircontents = [] 
            for item in dirList:  
                if item[0] != '.': 
                    if os.path.isdir(item): 
                        dircontents.append(['/'+item]) 
                    else: 
                        dircontents.append([item]) 
            dircontents.sort()  
            for act in dircontents: 
                store.append([act[0]]) 
            return store 
 
        #  If a file is clicked, open with leafpad. 
        #  If a directory is clicked, change the current working directory to it 
        #  and (my hurdle) replace the current treeview list with the contents of the  
        #  new directory, just like a file manager. 
 
        def on_activated(self, widget, row, col): 
            model = widget.get_model() 
            target = model[row][0] 
            if target[0] != "/": 
                cmd = "leafpad "+target 
                os.system(cmd) 
            else: 
                os.chdir(os.getcwd()+target) 
                print os.getcwd()   # Just for debugging 
 
        def create_columns(self, treeView): 
            rendererText = gtk.CellRendererText() 
            column = gtk.TreeViewColumn(None, rendererText, text=0) 
            column.set_sort_column_id(0)     
            treeView.append_column(column)      
 
PyApp()  
gtk.main() 

请您参考如下方法:

我所做的更改:

1. 将 treeView 替换为 self.treeView 以便我可以通过其他方法轻松访问它。

2. 在 on_activated 中，使用 create_model 创建一个新模型，并使用 gtk.TreeView.set_model 设置 self.treeView 使用该模型.

这似乎有效。代码:

import gtk, os 
 
class PyApp(gtk.Window):  
    def __init__(self): 
        super(PyApp, self).__init__() 
        self.set_size_request(250, 200) 
        self.set_position(gtk.WIN_POS_CENTER) 
        self.connect("destroy", gtk.main_quit) 
        self.set_title("SteveFM") 
        vbox = gtk.VBox(False, 8) 
        sw = gtk.ScrolledWindow() 
        sw.set_shadow_type(gtk.SHADOW_ETCHED_IN) 
        sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC) 
        vbox.pack_start(sw, True, True, 0) 
        store = self.create_model() 
        self.treeView = gtk.TreeView(store) 
        self.treeView.connect("row-activated", self.on_activated) 
        self.treeView.set_rules_hint(True) 
        sw.add(self.treeView) 
        self.create_columns(self.treeView)         
        self.add(vbox) 
        self.show_all() 
 
    #  Take the names of files and subdirectories in  
    #  the current directory and sort them into a list for treeview 
 
    def create_model(self): 
        store = gtk.ListStore(str) 
        dirList=os.listdir(os.getcwd()) 
        dircontents = [] 
        for item in dirList:  
            if item[0] != '.': 
                if os.path.isdir(item): 
                    dircontents.append(['/'+item]) 
                else: 
                    dircontents.append([item]) 
        dircontents.sort()  
        for act in dircontents: 
            store.append([act[0]]) 
        return store 
 
    #  If a file is clicked, open with leafpad. 
    #  If a directory is clicked, change the current working directory to it 
    #  and (my hurdle) replace the current treeview list with the contents of the  
    #  new directory, just like a file manager. 
 
    def on_activated(self, widget, row, col): 
        model = widget.get_model() 
        target = model[row][0] 
        if target[0] != "/": 
            cmd = "leafpad "+target 
            os.system(cmd) 
        else: 
            os.chdir(os.getcwd()+target) 
            print os.getcwd()   # Just for debugging 
            self.treeView.set_model(self.create_model()) 
 
    def create_columns(self, treeView): 
        rendererText = gtk.CellRendererText() 
        column = gtk.TreeViewColumn(None, rendererText, text=0) 
        column.set_sort_column_id(0)     
        self.treeView.append_column(column)      
 
PyApp()  
gtk.main()