GtkTreeviewColumn 每行具有不同的组合模型
我有一组全局值，例如 ["Foo", "Bar", "Baz", "Quux"]。我的 TreeView 中的每一行都代表一个只能处理这些值的子集的实体。例如，第一行可能处理 "Foo" 和 "Bar"，第二行可能处理 "Bar" 和 "奎克斯”。我想要一个 ComboBox 列来允许每一行选择它可以处理的值之一。
但是，从我现在的代码来看，整个列只能有一个 ComboBox 模型：
crc = gtk.CellRendererCombo()
crc.set_property('model', fooValuesModel)
crc.set_property('text-column', 0)
crc.set_property('editable', True)
crc.set_property('has_entry', False)
cl = gtk.TreeViewColumn(ctitle, crc, text=i)
treeView.append_column(cl)
我只有一次机会为整个列设置模型。有没有办法为每一行设置不同的存储，或者以某种方式过滤值？
I have a global set of values, e.g. ["Foo", "Bar", "Baz", "Quux"]. Each row in my TreeView represents an entity that can only deal with a subset of these values. For example, the first row might deal with "Foo" and "Bar", and the second, "Bar" and "Quux". I want a ComboBox column to allow each row to select one of the values it can deal with.
However, from the code I have now, the entire column can only have one model for the ComboBox:
crc = gtk.CellRendererCombo()
crc.set_property('model', fooValuesModel)
crc.set_property('text-column', 0)
crc.set_property('editable', True)
crc.set_property('has_entry', False)
cl = gtk.TreeViewColumn(ctitle, crc, text=i)
treeView.append_column(cl)
I have only one opportunity to set a model for the entire column. Is there any way to have different stores for each row, or to filter values somehow?
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您正在寻找的是
gtk.TreeModelFilter。它是一个树模型，包含另一个底层树模型的过滤值。您可以通过在过滤后的模型上调用set_visible_func()来决定哪些行应该可见。What you are looking for is
gtk.TreeModelFilter. It is a tree model containing filtered values of another underlying tree model. You can decide which rows should be visible by callingset_visible_func()on the filtered model.还有另一种方法可以做到这一点。
参见：
http://mail.gnome.org/archives/gtk -perl-list/2005-July/msg00065.html
（它是用 perl 编写的，但转换为 python 应该不会太困难）
秘密是这样的：
假设您有一个使用 TreeStore 作为其模型的 TreeView。其中一列使用组合框单元格渲染器，它将每行获取一个 ListStore 模型：
您可以将 ListStore 放入 TreeStore 列中，在 Perl 中，这将是
Gtk2::ListStore类型的列。当然，您不会向 TreeView 添加直接显示此内容的列。相反：当您将组合框单元格列添加到树视图时，可以使用“insert_column_with_attributes”并将“model”属性连接到 TreeStore 的 ListStore 列，让组合框单元格列使用 Treeview 中的该列作为其 ListStore。
当你向TreeView添加一行时，只需将一个完整的ListStore放入TreeStore的ListStore列中即可。然后，您可以使用所需的任何值填充每行 ListStore。
There's also another way to do this.
See also:
http://mail.gnome.org/archives/gtk-perl-list/2005-July/msg00065.html
(It's in perl, but shouldn't be too difficult to convert to python)
The secret being this:
Say you have a TreeView using a TreeStore as its model. And one of the columns uses a combobox cell renderer which will get a ListStore model per row:
You can put ListStores into TreeStore columns, in perl that would be a column of type
Gtk2::ListStore. Of course you wouldn't add a column to the TreeView displaying this directly. Instead:You can have the comboboxcell-column use that column from the Treeview as its ListStore when you add it to the treeview, using 'insert_column_with_attributes' and connecting the 'model' attribute to the ListStore column of the TreeStore.
When you add a row to the treeview, just put a complete ListStore into the ListStore column of the TreeStore. You can then fill the per-row ListStore with whatever values you want.