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
|
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_BROWSER_FRAME_VIEW_H__
#define CHROME_BROWSER_FRAME_VIEW_H__
#include <set>
#include "chrome/views/view.h"
class BrowserWindow;
class OSExchangeData;
// FrameView is the View that contains all the views of the BrowserWindow
// (XPFrame or VistaFrame). FrameView forwards all drag and drop messages to
// the TabStrip.
class FrameView : public ChromeViews::View {
public:
explicit FrameView(BrowserWindow* frame);
virtual ~FrameView() {}
// Adds view to the set of views that drops are allowed to occur on. You only
// need invoke this for views whose y-coordinate extends above the tab strip
// and you want to allow drops on.
void AddViewToDropList(ChromeViews::View* view);
protected:
// As long as ShouldForwardToTabStrip returns true, drag and drop methods
// are forwarded to the tab strip.
virtual bool CanDrop(const OSExchangeData& data);
virtual void OnDragEntered(const ChromeViews::DropTargetEvent& event);
virtual int OnDragUpdated(const ChromeViews::DropTargetEvent& event);
virtual void OnDragExited();
virtual int OnPerformDrop(const ChromeViews::DropTargetEvent& event);
// Returns true if the event should be forwarded to the TabStrip. This returns
// true if y coordinate is less than the bottom of the tab strip, and is not
// over another child view.
virtual bool ShouldForwardToTabStrip(
const ChromeViews::DropTargetEvent& event);
// Overriden to remove views from dropable_views_.
virtual void ViewHierarchyChanged(bool is_add, View* parent, View* child);
private:
// Creates and returns a new DropTargetEvent in the coordinates of the
// TabStrip.
ChromeViews::DropTargetEvent* MapEventToTabStrip(
const ChromeViews::DropTargetEvent& event);
// The BrowserWindow we're the child of.
BrowserWindow* window_;
// Initially set in CanDrop by invoking the same method on the TabStrip.
bool can_drop_;
// If true, drag and drop events are being forwarded to the tab strip.
// This is used to determine when to send OnDragExited and OnDragExited
// to the tab strip.
bool forwarding_to_tab_strip_;
// Set of additional views drops are allowed on. We do NOT own these.
std::set<ChromeViews::View*> dropable_views_;
DISALLOW_EVIL_CONSTRUCTORS(FrameView);
};
#endif // CHROME_BROWSER_FRAME_VIEW_H__
|
