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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
// Copyright (c) 2012 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/ui/views/constrained_window_views.h"
#include <algorithm>
#include "chrome/browser/ui/browser_finder.h"
#include "components/web_modal/web_contents_modal_dialog_host.h"
#include "ui/views/border.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_observer.h"
#include "ui/views/window/dialog_delegate.h"
using web_modal::ModalDialogHost;
using web_modal::ModalDialogHostObserver;
namespace {
// The name of a key to store on the window handle to associate
// BrowserModalDialogHostObserverViews with the Widget.
const char* const kBrowserModalDialogHostObserverViewsKey =
"__BROWSER_MODAL_DIALOG_HOST_OBSERVER_VIEWS__";
// Applies positioning changes from the ModalDialogHost to the Widget.
class BrowserModalDialogHostObserverViews
: public views::WidgetObserver,
public ModalDialogHostObserver {
public:
BrowserModalDialogHostObserverViews(ModalDialogHost* host,
views::Widget* target_widget,
const char *const native_window_property)
: host_(host),
target_widget_(target_widget),
native_window_property_(native_window_property) {
DCHECK(host_);
DCHECK(target_widget_);
host_->AddObserver(this);
target_widget_->AddObserver(this);
}
virtual ~BrowserModalDialogHostObserverViews() {
if (host_)
host_->RemoveObserver(this);
target_widget_->RemoveObserver(this);
target_widget_->SetNativeWindowProperty(native_window_property_, NULL);
}
// WidgetObserver overrides
virtual void OnWidgetClosing(views::Widget* widget) OVERRIDE {
delete this;
}
// WebContentsModalDialogHostObserver overrides
virtual void OnPositionRequiresUpdate() OVERRIDE {
UpdateBrowserModalDialogPosition(target_widget_, host_);
}
virtual void OnHostDestroying() OVERRIDE {
host_->RemoveObserver(this);
host_ = NULL;
}
private:
ModalDialogHost* host_;
views::Widget* target_widget_;
const char* const native_window_property_;
DISALLOW_COPY_AND_ASSIGN(BrowserModalDialogHostObserverViews);
};
void UpdateModalDialogPosition(views::Widget* widget,
web_modal::ModalDialogHost* dialog_host,
const gfx::Size& size) {
// Do not forcibly update the dialog widget position if it is being dragged.
if (widget->HasCapture())
return;
gfx::Point position = dialog_host->GetDialogPosition(size);
views::Border* border = widget->non_client_view()->frame_view()->border();
// Border may be null during widget initialization.
if (border) {
// Align the first row of pixels inside the border. This is the apparent
// top of the dialog.
position.set_y(position.y() - border->GetInsets().top());
}
if (widget->is_top_level()) {
position +=
views::Widget::GetWidgetForNativeView(dialog_host->GetHostView())->
GetClientAreaBoundsInScreen().OffsetFromOrigin();
}
widget->SetBounds(gfx::Rect(position, size));
}
} // namespace
void UpdateWebContentsModalDialogPosition(
views::Widget* widget,
web_modal::WebContentsModalDialogHost* dialog_host) {
gfx::Size size = widget->GetRootView()->GetPreferredSize();
gfx::Size max_size = dialog_host->GetMaximumDialogSize();
// Enlarge the max size by the top border, as the dialog will be shifted
// outside the area specified by the dialog host by this amount later.
views::Border* border =
widget->non_client_view()->frame_view()->border();
// Border may be null during widget initialization.
if (border)
max_size.Enlarge(0, border->GetInsets().top());
size.SetToMin(max_size);
UpdateModalDialogPosition(widget, dialog_host, size);
}
void UpdateBrowserModalDialogPosition(views::Widget* widget,
web_modal::ModalDialogHost* dialog_host) {
UpdateModalDialogPosition(widget, dialog_host,
widget->GetRootView()->GetPreferredSize());
}
views::Widget* CreateBrowserModalDialogViews(views::DialogDelegate* dialog,
gfx::NativeWindow parent) {
views::Widget* widget =
views::DialogDelegate::CreateDialogWidget(dialog, NULL, parent);
if (!dialog->UseNewStyleForThisDialog())
return widget;
// Get the browser dialog management and hosting components from |parent|.
Browser* browser = chrome::FindBrowserWithWindow(parent);
if (browser) {
ChromeWebModalDialogManagerDelegate* manager = browser;
ModalDialogHost* host = manager->GetWebContentsModalDialogHost();
DCHECK_EQ(parent, host->GetHostView());
ModalDialogHostObserver* dialog_host_observer =
new BrowserModalDialogHostObserverViews(
host, widget, kBrowserModalDialogHostObserverViewsKey);
dialog_host_observer->OnPositionRequiresUpdate();
}
return widget;
}
|
