chrome_render_widget_host_view_mac_delegate.mm revision 46d4c2bc3267f3f028f39e7e311b0f89aba2e4fd
1// Copyright (c) 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. 4 5#import "chrome/browser/renderer_host/chrome_render_widget_host_view_mac_delegate.h" 6 7#include <cmath> 8 9#include "base/prefs/pref_service.h" 10#include "base/strings/sys_string_conversions.h" 11#include "chrome/browser/devtools/devtools_window.h" 12#include "chrome/browser/profiles/profile.h" 13#import "chrome/browser/renderer_host/chrome_render_widget_host_view_mac_history_swiper.h" 14#include "chrome/browser/spellchecker/spellcheck_platform_mac.h" 15#include "chrome/browser/ui/browser.h" 16#include "chrome/browser/ui/browser_commands.h" 17#include "chrome/browser/ui/browser_finder.h" 18#import "chrome/browser/ui/cocoa/browser_window_controller.h" 19#import "chrome/browser/ui/cocoa/view_id_util.h" 20#include "chrome/common/pref_names.h" 21#include "chrome/common/spellcheck_messages.h" 22#include "chrome/common/url_constants.h" 23#include "content/public/browser/render_process_host.h" 24#include "content/public/browser/render_view_host.h" 25#include "content/public/browser/render_widget_host.h" 26#include "content/public/browser/render_widget_host_view.h" 27#include "content/public/browser/web_contents.h" 28#include "content/public/browser/web_contents_observer.h" 29 30using content::RenderViewHost; 31 32@interface ChromeRenderWidgetHostViewMacDelegate () <HistorySwiperDelegate> 33- (void)spellCheckEnabled:(BOOL)enabled checked:(BOOL)checked; 34@end 35 36namespace ChromeRenderWidgetHostViewMacDelegateInternal { 37 38// Filters the message sent by the renderer to know if spellchecking is enabled 39// or not for the currently focused element. 40class SpellCheckObserver : public content::WebContentsObserver { 41 public: 42 SpellCheckObserver( 43 RenderViewHost* host, 44 ChromeRenderWidgetHostViewMacDelegate* view_delegate) 45 : content::WebContentsObserver( 46 content::WebContents::FromRenderViewHost(host)), 47 view_delegate_(view_delegate) { 48 } 49 50 virtual ~SpellCheckObserver() { 51 } 52 53 private: 54 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE { 55 bool handled = true; 56 IPC_BEGIN_MESSAGE_MAP(SpellCheckObserver, message) 57 IPC_MESSAGE_HANDLER(SpellCheckHostMsg_ToggleSpellCheck, 58 OnToggleSpellCheck) 59 IPC_MESSAGE_UNHANDLED(handled = false) 60 IPC_END_MESSAGE_MAP() 61 return handled; 62 } 63 64 void OnToggleSpellCheck(bool enabled, bool checked) { 65 [view_delegate_ spellCheckEnabled:enabled checked:checked]; 66 } 67 68 ChromeRenderWidgetHostViewMacDelegate* view_delegate_; 69}; 70 71} // namespace ChromeRenderWidgetHostViewMacDelegateInternal 72 73@implementation ChromeRenderWidgetHostViewMacDelegate 74 75- (id)initWithRenderWidgetHost:(content::RenderWidgetHost*)renderWidgetHost { 76 self = [super init]; 77 if (self) { 78 renderWidgetHost_ = renderWidgetHost; 79 NSView* nativeView = renderWidgetHost_->GetView()->GetNativeView(); 80 view_id_util::SetID(nativeView, VIEW_ID_TAB_CONTAINER); 81 82 if (renderWidgetHost_->IsRenderView()) { 83 spellingObserver_.reset( 84 new ChromeRenderWidgetHostViewMacDelegateInternal::SpellCheckObserver( 85 RenderViewHost::From(renderWidgetHost_), self)); 86 } 87 88 historySwiper_.reset([[HistorySwiper alloc] initWithDelegate:self]); 89 } 90 return self; 91} 92 93- (void)dealloc { 94 [historySwiper_ setDelegate:nil]; 95 [super dealloc]; 96} 97 98- (void)viewGone:(NSView*)view { 99 view_id_util::UnsetID(view); 100} 101 102// Handle an event. All incoming key and mouse events flow through this 103// delegate method if implemented. Return YES if the event is fully handled, or 104// NO if normal processing should take place. 105- (BOOL)handleEvent:(NSEvent*)event { 106 return [historySwiper_ handleEvent:event]; 107} 108 109// Notification of scroll offset pinning. 110- (void)scrollOffsetPinnedToLeft:(BOOL)left toRight:(BOOL)right { 111} 112 113// Notification of whether the view has a horizontal scrollbar. 114- (void)setHasHorizontalScrollbar:(BOOL)has_horizontal_scrollbar { 115} 116 117// NSWindow events. 118 119- (void)beginGestureWithEvent:(NSEvent*)event { 120 [historySwiper_ beginGestureWithEvent:event]; 121} 122 123- (void)endGestureWithEvent:(NSEvent*)event { 124 [historySwiper_ endGestureWithEvent:event]; 125} 126 127// This is a low level API which provides touches associated with an event. 128// It is used in conjunction with gestures to determine finger placement 129// on the trackpad. 130- (void)touchesMovedWithEvent:(NSEvent*)event { 131 [historySwiper_ touchesMovedWithEvent:event]; 132} 133 134- (void)touchesBeganWithEvent:(NSEvent*)event { 135 [historySwiper_ touchesBeganWithEvent:event]; 136} 137 138- (void)touchesCancelledWithEvent:(NSEvent*)event { 139 [historySwiper_ touchesCancelledWithEvent:event]; 140} 141 142- (void)touchesEndedWithEvent:(NSEvent*)event { 143 [historySwiper_ touchesEndedWithEvent:event]; 144} 145 146- (BOOL)canRubberbandLeft:(NSView*)view { 147 return [historySwiper_ canRubberbandLeft:view]; 148} 149 150- (BOOL)canRubberbandRight:(NSView*)view { 151 return [historySwiper_ canRubberbandRight:view]; 152} 153 154// HistorySwiperDelegate methods 155 156- (BOOL)shouldAllowHistorySwiping { 157 if (!renderWidgetHost_ || !renderWidgetHost_->IsRenderView()) 158 return NO; 159 if (DevToolsWindow::IsDevToolsWindow( 160 RenderViewHost::From(renderWidgetHost_))) { 161 return NO; 162 } 163 164 return YES; 165} 166 167- (NSView*)viewThatWantsHistoryOverlay { 168 return renderWidgetHost_->GetView()->GetNativeView(); 169} 170 171- (BOOL)validateUserInterfaceItem:(id<NSValidatedUserInterfaceItem>)item 172 isValidItem:(BOOL*)valid { 173 SEL action = [item action]; 174 175 // For now, this action is always enabled for render view; 176 // this is sub-optimal. 177 // TODO(suzhe): Plumb the "can*" methods up from WebCore. 178 if (action == @selector(checkSpelling:)) { 179 *valid = renderWidgetHost_->IsRenderView(); 180 return YES; 181 } 182 183 // TODO(groby): Clarify who sends this and if toggleContinuousSpellChecking: 184 // is still necessary. 185 if (action == @selector(toggleContinuousSpellChecking:)) { 186 if ([(id)item respondsToSelector:@selector(setState:)]) { 187 content::RenderProcessHost* host = renderWidgetHost_->GetProcess(); 188 Profile* profile = Profile::FromBrowserContext(host->GetBrowserContext()); 189 DCHECK(profile); 190 spellcheckChecked_ = 191 profile->GetPrefs()->GetBoolean(prefs::kEnableContinuousSpellcheck); 192 NSCellStateValue checkedState = 193 spellcheckChecked_ ? NSOnState : NSOffState; 194 [(id)item setState:checkedState]; 195 } 196 *valid = spellcheckEnabled_; 197 return YES; 198 } 199 200 return NO; 201} 202 203- (void)rendererHandledWheelEvent:(const blink::WebMouseWheelEvent&)event 204 consumed:(BOOL)consumed { 205 [historySwiper_ rendererHandledWheelEvent:event consumed:consumed]; 206} 207 208// Spellchecking methods 209// The next five methods are implemented here since this class is the first 210// responder for anything in the browser. 211 212// This message is sent whenever the user specifies that a word should be 213// changed from the spellChecker. 214- (void)changeSpelling:(id)sender { 215 // Grab the currently selected word from the spell panel, as this is the word 216 // that we want to replace the selected word in the text with. 217 NSString* newWord = [[sender selectedCell] stringValue]; 218 if (newWord != nil) { 219 content::WebContents* webContents = 220 content::WebContents::FromRenderViewHost( 221 RenderViewHost::From(renderWidgetHost_)); 222 webContents->Replace(base::SysNSStringToUTF16(newWord)); 223 } 224} 225 226// This message is sent by NSSpellChecker whenever the next word should be 227// advanced to, either after a correction or clicking the "Find Next" button. 228// This isn't documented anywhere useful, like in NSSpellProtocol.h with the 229// other spelling panel methods. This is probably because Apple assumes that the 230// the spelling panel will be used with an NSText, which will automatically 231// catch this and advance to the next word for you. Thanks Apple. 232// This is also called from the Edit -> Spelling -> Check Spelling menu item. 233- (void)checkSpelling:(id)sender { 234 renderWidgetHost_->Send(new SpellCheckMsg_AdvanceToNextMisspelling( 235 renderWidgetHost_->GetRoutingID())); 236} 237 238// This message is sent by the spelling panel whenever a word is ignored. 239- (void)ignoreSpelling:(id)sender { 240 // Ideally, we would ask the current RenderView for its tag, but that would 241 // mean making a blocking IPC call from the browser. Instead, 242 // spellcheck_mac::CheckSpelling remembers the last tag and 243 // spellcheck_mac::IgnoreWord assumes that is the correct tag. 244 NSString* wordToIgnore = [sender stringValue]; 245 if (wordToIgnore != nil) 246 spellcheck_mac::IgnoreWord(base::SysNSStringToUTF16(wordToIgnore)); 247} 248 249- (void)showGuessPanel:(id)sender { 250 renderWidgetHost_->Send(new SpellCheckMsg_ToggleSpellPanel( 251 renderWidgetHost_->GetRoutingID(), 252 spellcheck_mac::SpellingPanelVisible())); 253} 254 255- (void)toggleContinuousSpellChecking:(id)sender { 256 content::RenderProcessHost* host = renderWidgetHost_->GetProcess(); 257 Profile* profile = Profile::FromBrowserContext(host->GetBrowserContext()); 258 DCHECK(profile); 259 PrefService* pref = profile->GetPrefs(); 260 pref->SetBoolean(prefs::kEnableContinuousSpellcheck, 261 !pref->GetBoolean(prefs::kEnableContinuousSpellcheck)); 262} 263 264- (void)spellCheckEnabled:(BOOL)enabled checked:(BOOL)checked { 265 spellcheckEnabled_ = enabled; 266 spellcheckChecked_ = checked; 267} 268 269// END Spellchecking methods 270 271@end 272