Question

有什么简单的方法可以使Gtk.Treeview在编辑时更新其列？

我基于Gtk.ListStore模型构建Treeview。我像这样初始化单元格：

Gtk.CellRendererText valueCells = new Gtk.CellRendererText ();
valueCells.editable = true;
tree_view.insert_column_with_attributes (-1, "Key", valueCells, "text", 0);
tree_view.insert_column_with_attributes (-1, "Value", valueCells, "text", 1);

我现在可以选择和编辑列，直到退出选择为止。 TreeView和ListStore均未更新。我尝试了几种解决方案，发现它们是用不同的语言编写的，但是没有用。我知道我必须更新模型，但无法找出如何找到该模型的参考。我会错过一些重要的东西吗？哦

Answer 1

您必须连接edited信号以通知用户所做的更改，这是一个完整的示例：

class MainWindow : Gtk.Window {

    public MainWindow () {
        Gtk.TreeView tree_view = new Gtk.TreeView ();
        setup_treeview (tree_view);

        add(tree_view);
    }


    private void setup_treeview (Gtk.TreeView view) {
        var listmodel = new Gtk.ListStore (4, typeof (string), typeof (string),
                                              typeof (string), typeof (string));
        view.set_model (listmodel);

        view.insert_column_with_attributes (-1, "Account Name", new Gtk.CellRendererText (), "text", 0);
        view.insert_column_with_attributes (-1, "Type", new Gtk.CellRendererText (), "text", 1);

        var cell = new Gtk.CellRendererText ();
        cell.set ("foreground_set", true);
        cell.editable = true;
        cell.edited.connect ((path, new_text) => {
                stdout.printf (path + "\n");
                stdout.printf (new_text + "\n");
                stdout.flush ();
            });
        view.insert_column_with_attributes (-1, "Balance", cell, "text", 2, "foreground", 3);

        Gtk.TreeIter iter;
        listmodel.append (out iter);
        listmodel.set (iter, 0, "My Visacard", 1, "card", 2, "102,10", 3, "red");

        listmodel.append (out iter);
        listmodel.set (iter, 0, "My Mastercard", 1, "card", 2, "10,20", 3, "red");
    }

}

int main (string[] args) {
    Gtk.init (ref args);
    MainWindow window = new MainWindow ();

    window.title = "Tree View test";
    window.border_width = 10;
    window.window_position = Gtk.WindowPosition.CENTER;
    window.set_default_size (350, 200);
    window.destroy.connect (Gtk.main_quit);

    window.show_all ();
    Gtk.main ();
    return 0;
}

重要的一点在这里：

var cell = new Gtk.CellRendererText ();
cell.editable = true;
cell.edited.connect ((path, new_text) => {
    stdout.printf (path + "\n");
    stdout.printf (new_text + "\n");
    stdout.flush ();
});

它将打印路径和修改后的单元格的new_text到命令行。

您现在要做的就是相应地更新模型。

Answer 2

using Gtk;

public class viewWindow:Gtk.Window {
 public viewWindow() {
 this.destroy.connect(Gtk.main_quit);
 set_default_size(200,150);

 Gtk.ListStore list_store=new Gtk.ListStore(1, typeof(string));
 Gtk.TreeIter iter;

 list_store.append(out iter);
 list_store.set(iter, 0, "Earth");
 list_store.append(out iter);
 list_store.set(iter, 0, "Mars");

 Gtk.TreeView view=new TreeView.with_model(list_store);
 this.add(view);

 Gtk.CellRendererText cell=new Gtk.CellRendererText();
 view.insert_column_with_attributes(-1, "Planet", cell, "text", 0);
 cell.editable = true;

 cell.edited.connect ((path, data) => {
  Gtk.TreePath tPath = new Gtk.TreePath.from_string(path);
  var model = view.get_model();
  var res = model.get_iter(out iter, tPath);
  if (res == true) {
   list_store.set(iter, 0, data);
  }
 });
}

public static int main(string[] args) {
 Gtk.init(ref args);
 var view = new viewWindow();
 view.show_all();
 Gtk.main();
 return 0;
 }
}

Vala中的Gtk.TreeView可编辑列

2 个答案: