1 // Copyright 2012 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.
5 #ifndef CHROME_BROWSER_UI_SEARCH_INSTANT_CONTROLLER_H_
6 #define CHROME_BROWSER_UI_SEARCH_INSTANT_CONTROLLER_H_
13 #include "base/basictypes.h"
14 #include "base/gtest_prod_util.h"
15 #include "base/memory/scoped_ptr.h"
16 #include "base/strings/string16.h"
17 #include "chrome/browser/ui/search/instant_page.h"
18 #include "chrome/common/instant_types.h"
19 #include "chrome/common/omnibox_focus_state.h"
20 #include "chrome/common/search_types.h"
21 #include "ui/gfx/native_widget_types.h"
22 #include "ui/gfx/rect.h"
24 class BrowserInstantController;
38 // Macro used for logging debug events. |message| should be a std::string.
39 #define LOG_INSTANT_DEBUG_EVENT(controller, message) \
40 controller->LogDebugEvent(message)
42 // InstantController drives Chrome Instant, i.e., the browser implementation of
43 // the Embedded Search API (see http://dev.chromium.org/embeddedsearch).
45 // In extended mode, InstantController maintains and coordinates an InstantTab
46 // instance of InstantPage. An InstantTab instance points to the currently
47 // active tab, if it supports the Embedded Search API. InstantTab is backed by a
48 // WebContents and it does not own that WebContents.
50 // InstantController is owned by Browser via BrowserInstantController.
51 class InstantController : public InstantPage::Delegate {
53 explicit InstantController(BrowserInstantController* browser);
54 virtual ~InstantController();
56 // Sets the stored start-edge margin and width of the omnibox.
57 void SetOmniboxBounds(const gfx::Rect& bounds);
59 // Sends the current SearchProvider suggestion to the Instant page if any.
60 void SetSuggestionToPrefetch(const InstantSuggestion& suggestion);
62 // Notifies |instant_Tab_| to toggle voice search.
63 void ToggleVoiceSearch();
65 // Called if the browser is navigating to a search URL for |search_terms| with
66 // search-term-replacement enabled. If |instant_tab_| can be used to process
67 // the search, this does so and returns true. Else, returns false.
68 bool SubmitQuery(const string16& search_terms);
70 // Called to indicate that the omnibox focus state changed with the given
71 // |reason|. If |focus_state| is FOCUS_NONE, |view_gaining_focus| is set to
72 // the view gaining focus.
73 void OmniboxFocusChanged(OmniboxFocusState focus_state,
74 OmniboxFocusChangeReason reason,
75 gfx::NativeView view_gaining_focus);
77 // The search mode in the active tab has changed. Bind |instant_tab_| if the
78 // |new_mode| reflects an Instant search results page.
79 void SearchModeChanged(const SearchMode& old_mode,
80 const SearchMode& new_mode);
82 // The user switched tabs. Bind |instant_tab_| if the newly active tab is an
83 // Instant search results page.
84 void ActiveTabChanged();
86 // The user is about to switch tabs.
87 void TabDeactivated(content::WebContents* contents);
89 // Adds a new event to |debug_events_| and also DVLOG's it. Ensures that
90 // |debug_events_| doesn't get too large.
91 void LogDebugEvent(const std::string& info) const;
93 // Resets list of debug events.
94 void ClearDebugEvents();
96 // See comments for |debug_events_| below.
97 const std::list<std::pair<int64, std::string> >& debug_events() {
101 // Gets the stored start-edge margin and width of the omnibox.
102 const gfx::Rect omnibox_bounds() {
103 return omnibox_bounds_;
106 // Used by BrowserInstantController to notify InstantController about the
107 // instant support change event for the active web contents.
108 void InstantSupportChanged(InstantSupportState instant_support);
111 // Accessors are made protected for testing purposes.
112 virtual InstantTab* instant_tab() const;
114 virtual Profile* profile() const;
117 friend class InstantExtendedManualTest;
118 friend class InstantTestBase;
120 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, ExtendedModeIsOn);
121 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, MostVisited);
122 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, NTPIsPreloaded);
123 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, PreloadedNTPIsUsedInNewTab);
124 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, PreloadedNTPIsUsedInSameTab);
125 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, PreloadedNTPForWrongProvider);
126 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, PreloadedNTPRenderProcessGone);
127 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest,
128 PreloadedNTPDoesntSupportInstant);
129 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, ProcessIsolation);
130 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, UnrelatedSiteInstance);
131 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, OnDefaultSearchProviderChanged);
132 FRIEND_TEST_ALL_PREFIXES(InstantExtendedNetworkTest,
133 NTPReactsToNetworkChanges);
134 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest,
135 AcceptingURLSearchDoesNotNavigate);
136 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, AcceptingJSSearchDoesNotRunJS);
137 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest,
138 ReloadSearchAfterBackReloadsCorrectQuery);
139 FRIEND_TEST_ALL_PREFIXES(InstantExtendedFirstTabTest,
140 RedirectToLocalOnLoadFailure);
141 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, KeyboardTogglesVoiceSearch);
142 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, HomeButtonAffectsMargin);
143 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, SearchReusesInstantTab);
144 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest,
145 SearchDoesntReuseInstantTabWithoutSupport);
146 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest,
147 TypedSearchURLDoesntReuseInstantTab);
148 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest,
149 DispatchMVChangeEventWhileNavigatingBackToNTP);
151 // Overridden from InstantPage::Delegate:
152 // TODO(shishir): We assume that the WebContent's current RenderViewHost is
153 // the RenderViewHost being created which is not always true. Fix this.
154 virtual void InstantSupportDetermined(
155 const content::WebContents* contents,
156 bool supports_instant) OVERRIDE;
157 virtual void InstantPageAboutToNavigateMainFrame(
158 const content::WebContents* contents,
159 const GURL& url) OVERRIDE;
160 virtual void InstantPageLoadFailed(content::WebContents* contents) OVERRIDE;
162 // Helper function to navigate the given contents to the local fallback
163 // Instant URL and trim the history correctly.
164 void RedirectToLocalNTP(content::WebContents* contents);
166 // Helper for OmniboxFocusChanged. Commit or discard the overlay.
167 void OmniboxLostFocus(gfx::NativeView view_gaining_focus);
169 // If the active tab is an Instant search results page, sets |instant_tab_| to
170 // point to it. Else, deletes any existing |instant_tab_|.
171 void ResetInstantTab();
173 // Sends theme info, omnibox bounds, etc. down to the Instant tab.
174 void UpdateInfoForInstantTab();
176 // Returns whether input is in progress, i.e. if the omnibox has focus and the
177 // active tab is in mode SEARCH_SUGGESTIONS.
178 bool IsInputInProgress() const;
180 // Returns the InstantService for the browser profile.
181 InstantService* GetInstantService() const;
183 BrowserInstantController* const browser_;
185 // The instance of InstantPage maintained by InstantController.
186 scoped_ptr<InstantTab> instant_tab_;
188 // Omnibox focus state.
189 OmniboxFocusState omnibox_focus_state_;
191 // The reason for the most recent omnibox focus change.
192 OmniboxFocusChangeReason omnibox_focus_change_reason_;
194 // The search model mode for the active tab.
195 SearchMode search_mode_;
197 // The start-edge margin and width of the omnibox, used by the page to align
198 // its suggestions with the omnibox.
199 gfx::Rect omnibox_bounds_;
201 // List of events and their timestamps, useful in debugging Instant behaviour.
202 mutable std::list<std::pair<int64, std::string> > debug_events_;
204 DISALLOW_COPY_AND_ASSIGN(InstantController);
207 #endif // CHROME_BROWSER_UI_SEARCH_INSTANT_CONTROLLER_H_