1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/gtk/view_id_util.h"
#include <stdint.h>
#include <gtk/gtk.h>
namespace {
const char kViewIDString[] = "__VIEW_ID__";
const char kViewIDOverrideString[] = "__VIEW_ID_OVERRIDE__";
struct ViewIDSearchStruct {
ViewID id; // Input: the ID we are searching for.
GtkWidget* widget; // Output: the found widget, or NULL.
};
// Recursively search for the given view ID among the children of |widget|.
void SearchForWidgetWithViewID(GtkWidget* widget, gpointer data) {
ViewIDSearchStruct* search_struct =
reinterpret_cast<ViewIDSearchStruct*>(data);
// The widget has already been found; abort the search.
if (search_struct->widget)
return;
// Check if the widget defines its own ID function.
ViewIDUtil::Delegate* delegate = reinterpret_cast<ViewIDUtil::Delegate*>(
g_object_get_data(G_OBJECT(widget), kViewIDOverrideString));
if (delegate) {
search_struct->widget = delegate->GetWidgetForViewID(search_struct->id);
// If there was success, return.
if (search_struct->widget)
return;
}
// Otherwise check the g_object data.
int widget_id =
reinterpret_cast<intptr_t>(g_object_get_data(G_OBJECT(widget),
kViewIDString));
if (search_struct->id == widget_id) {
// Success; set |widget| and return.
search_struct->widget = widget;
return;
}
// Recurse.
if (GTK_IS_CONTAINER(widget)) {
gtk_container_foreach(GTK_CONTAINER(widget),
SearchForWidgetWithViewID, data);
}
}
} // namespace
void ViewIDUtil::SetID(GtkWidget* widget, ViewID id) {
g_object_set_data(G_OBJECT(widget), kViewIDString,
reinterpret_cast<void*>(id));
}
GtkWidget* ViewIDUtil::GetWidget(GtkWidget* root, ViewID id) {
ViewIDSearchStruct search_struct = { id, NULL };
SearchForWidgetWithViewID(root, &search_struct);
return search_struct.widget;
}
void ViewIDUtil::SetDelegateForWidget(GtkWidget* widget, Delegate* delegate) {
g_object_set_data(G_OBJECT(widget), kViewIDOverrideString, delegate);
}
|
