Python GtkTreeview;如何在選擇項目時刷新列表

Question

我正在製作一個基本的文件管理器，並在我的帖子標題中卡住了問題。 首先它在目錄中查找，生成項目列表，並將它們附加到樹視圖列表中。

如果單擊一個子目錄，它將成爲新的當前目錄。我所需要的就是將其發回到def，它讀取並顯示當前目錄的內容（我認爲）。

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() 

Answer 1

改變我做：

1. 更換treeView與self.treeView這樣我就可以在其他方法很容易地訪問它。

2. 在on_activated，創建一個新的模型create_model，並設置self.treeView使用使用gtk.TreeView.set_model這一模式。

它似乎工作。代碼：

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()