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Issue 8555013: views: Move examples/ directory to ui/views/. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 9 years, 1 month ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "views/examples/example_base.h"
6
7 #include <stdarg.h>
8
9 #include "base/compiler_specific.h"
10 #include "base/stringprintf.h"
11 #include "views/examples/examples_main.h"
12
13 namespace {
14
15 // Some of GTK based view classes require NativeWidgetGtk in the view
16 // parent chain. This class is used to defer the creation of such
17 // views until a NativeWidgetGtk is added to the view hierarchy.
18 class ContainerView : public views::View {
19 public:
20 explicit ContainerView(examples::ExampleBase* base)
21 : example_view_created_(false),
22 example_base_(base) {
23 }
24
25 private:
26 // Overridden from views::View:
27 virtual void ViewHierarchyChanged(bool is_add,
28 views::View* parent,
29 views::View* child) OVERRIDE {
30 views::View::ViewHierarchyChanged(is_add, parent, child);
31 // We're not using child == this because a Widget may not be
32 // availalbe when this is added to the hierarchy.
33 if (is_add && GetWidget() && !example_view_created_) {
34 example_view_created_ = true;
35 example_base_->CreateExampleView(this);
36 }
37 }
38
39 // True if the example view has already been created, or false otherwise.
40 bool example_view_created_;
41
42 examples::ExampleBase* example_base_;
43
44 DISALLOW_COPY_AND_ASSIGN(ContainerView);
45 };
46
47 } // namespace
48
49 namespace examples {
50
51 ExampleBase::~ExampleBase() {}
52
53 ExampleBase::ExampleBase(ExamplesMain* main, const char* title)
54 : main_(main), example_title_(title) {
55 container_ = new ContainerView(this);
56 }
57
58 // Prints a message in the status area, at the bottom of the window.
59 void ExampleBase::PrintStatus(const char* format, ...) {
60 va_list ap;
61 va_start(ap, format);
62 std::string msg;
63 base::StringAppendV(&msg, format, ap);
64 main_->SetStatus(msg);
65 }
66
67 } // namespace examples
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