在Liststore中将项目动态添加到CellRendererCombo:Pygtk [英] Dynamically adding Items to CellRendererCombo in Liststore : Pygtk

问题描述

我正在尝试将商品动态添加到CellRendererCombo.请参见下面的代码.当我单击'Samsung'时，组合框中列出了相应的项目.现在的问题是，当我单击'LG'时，列出了与三星"相对应的项目.简而言之，组合框显示的是先前选择的键的项目，而不是当前键的项目.

I am trying add items to CellRendererCombo dynamically. See the code below. When I click on 'Samsung' the corresponding items is listed in the combo box. Now the problem is, when I click 'LG', the items corresponds to 'Samsung' is listed. In short, the combo box is showing items for the previously selected key, not for the current key.

我该如何解决这个问题?

How can I solve this issue?

#!/usr/bin/env python

import gtk,os

class CellRendererCombo:
    def __init__(self):
        window = gtk.Window()
        window.set_default_size(200, 200)

        liststore_hardware = gtk.ListStore(str, str)
        liststore_hardware.append(["Television", "Samsung"])
        liststore_hardware.append(["Mobile Phone", "LG"])
        liststore_hardware.append(["DVD Player", "Sony"])

        treeview = gtk.TreeView(liststore_hardware)
        column_text = gtk.TreeViewColumn("Text")
        column_combo = gtk.TreeViewColumn("Combo")
        treeview.append_column(column_text)
        treeview.append_column(column_combo)

        cellrenderer_text = gtk.CellRendererText()
        column_text.pack_start(cellrenderer_text, False)
        column_text.add_attribute(cellrenderer_text, "text", 0)

        self.cellrenderer_combo = gtk.CellRendererCombo()
        self.cellrenderer_combo.set_property("editable", True)

        self.cellrenderer_combo.set_property("text-column", 0)
        column_combo.pack_start(self.cellrenderer_combo, False)
        column_combo.add_attribute(self.cellrenderer_combo, "text", 1)

        window.connect("destroy", lambda w: gtk.main_quit())
        self.cellrenderer_combo.connect("editing-started", self.populate_combo)
        self.cellrenderer_combo.connect("edited", self.combo_changed, liststore_hardware)

        window.add(treeview)
        window.show_all()

    def combo_changed(self, widget, path, text, model):
        model[path][1] = text

    def populate_combo(self,*args):
        liststore_manufacturers = gtk.ListStore(str)
        manufacturers={}
        manufacturers['Samsung'] = ["Samsung", "Item1","Item2", "Item3", "Item4"]
        manufacturers['LG'] = ["LG", "Item5", "Item6", "Item7", "Item8", "Item9",'Item10']
        manufacturers['Sony'] = ["Sony", "Item11", "Item12", "Item13", "Item14", "Item15",'Item16']

        catgry=self.cellrenderer_combo.get_property ("text") # read the content of combobox

        for item in manufacturers[catgry]:
            liststore_manufacturers.append([item])
        self.cellrenderer_combo.set_property("model", liststore_manufacturers)

#        
CellRendererCombo()
gtk.main()

推荐答案

问题已解决.问题是因为在发出GtkCellEditable::editing-started信号之前已设置弹出式组合框上的模型.并且为combobox中的下一个弹出窗口设置了editing-started处理程序.

Problem solved. The issue was because model on combobox that pops-up is set before GtkCellEditable::editing-started signal is emitted. And the editing-started handler was set for the next pop-up in combobox.

因此，我创建了另一种方法来捕获列表存储已更改"的信号，并编写了用于在该方法中动态填充cellrendercombobox的列表存储的代码.

So I create another method to capture liststore "changed" signal, and wrote the code to dynamically populate the liststore for cellrendercombobox in that method.

treeviewmodel = self.tree_view.get_model()
tree_selection = self.tree_view.get_selection()
tree_selection.connect("changed", self.onSelectionChanged)
......
def onSelectionChanged(self,tree_selection) :
    value=None
    (model, pathlist) = tree_selection.get_selected_rows()
    for path in pathlist :
        tree_iter = model.get_iter(path)
        value = model.get_value(tree_iter,0)
        print value
    if value:
        <code to populate the liststore>

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