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Side by Side Diff: chrome/browser/tab_contents/infobar_delegate.h

Issue 6537015: Start moving core pieces of Chrome multi-process code to src\content. (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 9 years, 10 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef CHROME_BROWSER_TAB_CONTENTS_INFOBAR_DELEGATE_H_ 5 #ifndef CHROME_BROWSER_TAB_CONTENTS_INFOBAR_DELEGATE_H_
6 #define CHROME_BROWSER_TAB_CONTENTS_INFOBAR_DELEGATE_H_ 6 #define CHROME_BROWSER_TAB_CONTENTS_INFOBAR_DELEGATE_H_
7 #pragma once 7 #pragma once
8 8
9 #include "base/basictypes.h" 9 #include "content/browser/tab_contents/infobar_delegate.h"
10 #include "base/string16.h"
11 #include "chrome/browser/tab_contents/navigation_controller.h"
12 #include "webkit/glue/window_open_disposition.h"
13
14 class ConfirmInfoBarDelegate;
15 class CrashedExtensionInfoBarDelegate;
16 class ExtensionInfoBarDelegate;
17 class InfoBar;
18 class LinkInfoBarDelegate;
19 class PluginInstallerInfoBarDelegate;
20 class SkBitmap;
21 class ThemeInstalledInfoBarDelegate;
22 class TranslateInfoBarDelegate;
23
24 // An interface implemented by objects wishing to control an InfoBar.
25 // Implementing this interface is not sufficient to use an InfoBar, since it
26 // does not map to a specific InfoBar type. Instead, you must implement either
27 // LinkInfoBarDelegate or ConfirmInfoBarDelegate, or override with your own
28 // delegate for your own InfoBar variety.
29 //
30 // --- WARNING ---
31 // When creating your InfoBarDelegate subclass, it is recommended that you
32 // design it such that you instantiate a brand new delegate for every call to
33 // AddInfoBar, rather than re-using/sharing a delegate object. Otherwise,
34 // you need to consider the fact that more than one InfoBar instance can exist
35 // and reference the same delegate -- even though it is also true that we only
36 // ever fully show one infobar (they don't stack). The dual-references occur
37 // because a second InfoBar can be added while the first one is in the process
38 // of closing (the animations). This can cause problems because when the first
39 // one does finally fully close InfoBarDelegate::InfoBarClosed() is called,
40 // and the delegate is free to clean itself up or reset state, which may have
41 // fatal consequences for the InfoBar that was in the process of opening (or is
42 // now fully opened) -- it is referencing a delegate that may not even exist
43 // anymore.
44 // As such, it is generally much safer to dedicate a delegate instance to
45 // AddInfoBar!
46 class InfoBarDelegate {
47 public:
48 // The type of the infobar. It controls its appearance, such as its background
49 // color.
50 enum Type {
51 WARNING_TYPE,
52 PAGE_ACTION_TYPE,
53 };
54
55 virtual ~InfoBarDelegate();
56
57 // Called to create the InfoBar. Implementation of this method is
58 // platform-specific.
59 virtual InfoBar* CreateInfoBar() = 0;
60
61 // Returns true if the supplied |delegate| is equal to this one. Equality is
62 // left to the implementation to define. This function is called by the
63 // TabContents when determining whether or not a delegate should be added
64 // because a matching one already exists. If this function returns true, the
65 // TabContents will not add the new delegate because it considers one to
66 // already be present.
67 virtual bool EqualsDelegate(InfoBarDelegate* delegate) const;
68
69 // Returns true if the InfoBar should be closed automatically after the page
70 // is navigated. The default behavior is to return true if the page is
71 // navigated somewhere else or reloaded.
72 virtual bool ShouldExpire(
73 const NavigationController::LoadCommittedDetails& details) const;
74
75 // Called when the user clicks on the close button to dismiss the infobar.
76 virtual void InfoBarDismissed();
77
78 // Called after the InfoBar is closed. The delegate is free to delete itself
79 // at this point.
80 virtual void InfoBarClosed();
81
82 // Return the icon to be shown for this InfoBar. If the returned bitmap is
83 // NULL, no icon is shown.
84 virtual SkBitmap* GetIcon() const;
85
86 // Returns the type of the infobar. The type determines the appearance (such
87 // as background color) of the infobar.
88 virtual Type GetInfoBarType() const;
89
90 // Type-checking downcast routines:
91 virtual ConfirmInfoBarDelegate* AsConfirmInfoBarDelegate();
92 virtual CrashedExtensionInfoBarDelegate* AsCrashedExtensionInfoBarDelegate();
93 virtual ExtensionInfoBarDelegate* AsExtensionInfoBarDelegate();
94 virtual LinkInfoBarDelegate* AsLinkInfoBarDelegate();
95 virtual PluginInstallerInfoBarDelegate* AsPluginInstallerInfoBarDelegate();
96 virtual ThemeInstalledInfoBarDelegate* AsThemePreviewInfobarDelegate();
97 virtual TranslateInfoBarDelegate* AsTranslateInfoBarDelegate();
98
99 protected:
100 // Provided to subclasses as a convenience to initialize the state of this
101 // object. If |contents| is non-NULL, its active entry's unique ID will be
102 // stored using StoreActiveEntryUniqueID automatically.
103 explicit InfoBarDelegate(TabContents* contents);
104
105 // Store the unique id for the active entry in the specified TabContents, to
106 // be used later upon navigation to determine if this InfoBarDelegate should
107 // be expired from |contents_|.
108 void StoreActiveEntryUniqueID(TabContents* contents);
109
110 private:
111 // The unique id of the active NavigationEntry of the TabContents that we were
112 // opened for. Used to help expire on navigations.
113 int contents_unique_id_;
114
115 DISALLOW_COPY_AND_ASSIGN(InfoBarDelegate);
116 };
117 10
118 // An interface derived from InfoBarDelegate implemented by objects wishing to 11 // An interface derived from InfoBarDelegate implemented by objects wishing to
119 // control a LinkInfoBar. 12 // control a LinkInfoBar.
120 class LinkInfoBarDelegate : public InfoBarDelegate { 13 class LinkInfoBarDelegate : public InfoBarDelegate {
121 public: 14 public:
122 // Returns the message string to be displayed in the InfoBar. |link_offset| 15 // Returns the message string to be displayed in the InfoBar. |link_offset|
123 // is the position where the link should be inserted. If |link_offset| is set 16 // is the position where the link should be inserted. If |link_offset| is set
124 // to string16::npos (it is by default), the link is right aligned within 17 // to string16::npos (it is by default), the link is right aligned within
125 // the InfoBar rather than being embedded in the message text. 18 // the InfoBar rather than being embedded in the message text.
126 virtual string16 GetMessageTextWithOffset(size_t* link_offset) const; 19 virtual string16 GetMessageTextWithOffset(size_t* link_offset) const;
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224 virtual int GetButtons() const; 117 virtual int GetButtons() const;
225 118
226 SkBitmap* icon_; 119 SkBitmap* icon_;
227 string16 message_; 120 string16 message_;
228 bool auto_expire_; // Should it expire automatically on navigation? 121 bool auto_expire_; // Should it expire automatically on navigation?
229 122
230 DISALLOW_COPY_AND_ASSIGN(SimpleAlertInfoBarDelegate); 123 DISALLOW_COPY_AND_ASSIGN(SimpleAlertInfoBarDelegate);
231 }; 124 };
232 125
233 #endif // CHROME_BROWSER_TAB_CONTENTS_INFOBAR_DELEGATE_H_ 126 #endif // CHROME_BROWSER_TAB_CONTENTS_INFOBAR_DELEGATE_H_
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