ui/app_list/cocoa/apps_search_box_controller.mm

   1 // Copyright 2013 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 "ui/app_list/cocoa/apps_search_box_controller.h"
   6
   7 #include "base/mac/foundation_util.h"
   8 #include "base/mac/mac_util.h"
   9 #include "base/strings/sys_string_conversions.h"
  10 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMNSBezierPath+RoundRect.h"
  11 #include "ui/app_list/app_list_menu.h"
  12 #include "ui/app_list/app_list_model.h"
  13 #include "ui/app_list/search_box_model.h"
  14 #include "ui/app_list/search_box_model_observer.h"
  15 #import "ui/base/cocoa/controls/hover_image_menu_button.h"
  16 #import "ui/base/cocoa/controls/hover_image_menu_button_cell.h"
  17 #import "ui/base/cocoa/menu_controller.h"
  18 #include "ui/base/resource/resource_bundle.h"
  19 #include "ui/gfx/image/image_skia_util_mac.h"
  20 #include "ui/resources/grit/ui_resources.h"
  21
  22 namespace {
  23
  24 // Padding either side of the search icon and menu button.
  25 const CGFloat kPadding = 14;
  26
  27 // Size of the search icon.
  28 const CGFloat kSearchIconDimension = 32;
  29
  30 // Size of the menu button on the right.
  31 const CGFloat kMenuButtonDimension = 29;
  32
  33 // Menu offset relative to the bottom-right corner of the menu button.
  34 const CGFloat kMenuYOffsetFromButton = -4;
  35 const CGFloat kMenuXOffsetFromButton = -7;
  36
  37 }
  38
  39 @interface AppsSearchBoxController ()
  40
  41 - (NSImageView*)searchImageView;
  42 - (void)addSubviews;
  43
  44 @end
  45
  46 namespace app_list {
  47
  48 class SearchBoxModelObserverBridge : public SearchBoxModelObserver {
  49  public:
  50   SearchBoxModelObserverBridge(AppsSearchBoxController* parent);
  51   virtual ~SearchBoxModelObserverBridge();
  52
  53   void SetSearchText(const base::string16& text);
  54
  55   virtual void IconChanged() OVERRIDE;
  56   virtual void SpeechRecognitionButtonPropChanged() OVERRIDE;
  57   virtual void HintTextChanged() OVERRIDE;
  58   virtual void SelectionModelChanged() OVERRIDE;
  59   virtual void TextChanged() OVERRIDE;
  60
  61  private:
  62   SearchBoxModel* GetModel();
  63
  64   AppsSearchBoxController* parent_;  // Weak. Owns us.
  65
  66   DISALLOW_COPY_AND_ASSIGN(SearchBoxModelObserverBridge);
  67 };
  68
  69 SearchBoxModelObserverBridge::SearchBoxModelObserverBridge(
  70     AppsSearchBoxController* parent)
  71     : parent_(parent) {
  72   IconChanged();
  73   HintTextChanged();
  74   GetModel()->AddObserver(this);
  75 }
  76
  77 SearchBoxModelObserverBridge::~SearchBoxModelObserverBridge() {
  78   GetModel()->RemoveObserver(this);
  79 }
  80
  81 SearchBoxModel* SearchBoxModelObserverBridge::GetModel() {
  82   SearchBoxModel* searchBoxModel = [[parent_ delegate] searchBoxModel];
  83   DCHECK(searchBoxModel);
  84   return searchBoxModel;
  85 }
  86
  87 void SearchBoxModelObserverBridge::SetSearchText(const base::string16& text) {
  88   SearchBoxModel* model = GetModel();
  89   model->RemoveObserver(this);
  90   model->SetText(text);
  91   // TODO(tapted): See if this should call SetSelectionModel here.
  92   model->AddObserver(this);
  93 }
  94
  95 void SearchBoxModelObserverBridge::IconChanged() {
  96   [[parent_ searchImageView] setImage:gfx::NSImageFromImageSkiaWithColorSpace(
  97       GetModel()->icon(), base::mac::GetSRGBColorSpace())];
  98 }
  99
 100 void SearchBoxModelObserverBridge::SpeechRecognitionButtonPropChanged() {
 101   // TODO(mukai): implement.
 102   NOTIMPLEMENTED();
 103 }
 104
 105 void SearchBoxModelObserverBridge::HintTextChanged() {
 106   [[[parent_ searchTextField] cell] setPlaceholderString:
 107       base::SysUTF16ToNSString(GetModel()->hint_text())];
 108 }
 109
 110 void SearchBoxModelObserverBridge::SelectionModelChanged() {
 111   // TODO(tapted): See if anything needs to be done here for RTL.
 112 }
 113
 114 void SearchBoxModelObserverBridge::TextChanged() {
 115   // Currently the model text is only changed when we are not observing it, or
 116   // it is changed in tests to establish a particular state.
 117   [[parent_ searchTextField]
 118       setStringValue:base::SysUTF16ToNSString(GetModel()->text())];
 119   [[parent_ delegate] modelTextDidChange];
 120 }
 121
 122 }  // namespace app_list
 123
 124 @interface SearchTextField : NSTextField {
 125  @private
 126   NSRect textFrameInset_;
 127 }
 128
 129 @property(readonly, nonatomic) NSRect textFrameInset;
 130
 131 - (void)setMarginsWithLeftMargin:(CGFloat)leftMargin
 132                      rightMargin:(CGFloat)rightMargin;
 133
 134 @end
 135
 136 @interface AppListMenuController : MenuController {
 137  @private
 138   AppsSearchBoxController* searchBoxController_;  // Weak. Owns us.
 139 }
 140
 141 - (id)initWithSearchBoxController:(AppsSearchBoxController*)parent;
 142
 143 @end
 144
 145 @implementation AppsSearchBoxController
 146
 147 @synthesize delegate = delegate_;
 148
 149 - (id)initWithFrame:(NSRect)frame {
 150   if ((self = [super init])) {
 151     base::scoped_nsobject<NSView> containerView(
 152         [[NSView alloc] initWithFrame:frame]);
 153     [self setView:containerView];
 154     [self addSubviews];
 155   }
 156   return self;
 157 }
 158
 159 - (void)clearSearch {
 160   [searchTextField_ setStringValue:@""];
 161   [self controlTextDidChange:nil];
 162 }
 163
 164 - (void)rebuildMenu {
 165   if (![delegate_ appListDelegate])
 166     return;
 167
 168   menuController_.reset();
 169   appListMenu_.reset(
 170       new app_list::AppListMenu([delegate_ appListDelegate]));
 171   menuController_.reset([[AppListMenuController alloc]
 172       initWithSearchBoxController:self]);
 173   [menuButton_ setMenu:[menuController_ menu]];  // Menu will populate here.
 174 }
 175
 176 - (void)setDelegate:(id<AppsSearchBoxDelegate>)delegate {
 177   [[menuButton_ menu] removeAllItems];
 178   menuController_.reset();
 179   appListMenu_.reset();
 180   bridge_.reset();  // Ensure observers are cleared before updating |delegate_|.
 181   delegate_ = delegate;
 182   if (!delegate_)
 183     return;
 184
 185   bridge_.reset(new app_list::SearchBoxModelObserverBridge(self));
 186   [self rebuildMenu];
 187 }
 188
 189 - (NSTextField*)searchTextField {
 190   return searchTextField_;
 191 }
 192
 193 - (NSPopUpButton*)menuControl {
 194   return menuButton_;
 195 }
 196
 197 - (app_list::AppListMenu*)appListMenu {
 198   return appListMenu_.get();
 199 }
 200
 201 - (NSImageView*)searchImageView {
 202   return searchImageView_;
 203 }
 204
 205 - (void)addSubviews {
 206   NSRect viewBounds = [[self view] bounds];
 207   searchImageView_.reset([[NSImageView alloc] initWithFrame:NSMakeRect(
 208       kPadding, 0, kSearchIconDimension, NSHeight(viewBounds))]);
 209
 210   searchTextField_.reset([[SearchTextField alloc] initWithFrame:viewBounds]);
 211   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 212   [searchTextField_ setDelegate:self];
 213   [searchTextField_ setFont:rb.GetFont(
 214       ui::ResourceBundle::MediumFont).GetNativeFont()];
 215   [searchTextField_
 216       setMarginsWithLeftMargin:NSMaxX([searchImageView_ frame]) + kPadding
 217                    rightMargin:kMenuButtonDimension + 2 * kPadding];
 218
 219   // Add the drop-down menu, with a custom button.
 220   NSRect buttonFrame = NSMakeRect(
 221       NSWidth(viewBounds) - kMenuButtonDimension - kPadding,
 222       floor(NSMidY(viewBounds) - kMenuButtonDimension / 2),
 223       kMenuButtonDimension,
 224       kMenuButtonDimension);
 225   menuButton_.reset([[HoverImageMenuButton alloc] initWithFrame:buttonFrame
 226                                                       pullsDown:YES]);
 227   [[menuButton_ hoverImageMenuButtonCell] setDefaultImage:
 228       rb.GetNativeImageNamed(IDR_APP_LIST_TOOLS_NORMAL).AsNSImage()];
 229   [[menuButton_ hoverImageMenuButtonCell] setAlternateImage:
 230       rb.GetNativeImageNamed(IDR_APP_LIST_TOOLS_PRESSED).AsNSImage()];
 231   [[menuButton_ hoverImageMenuButtonCell] setHoverImage:
 232       rb.GetNativeImageNamed(IDR_APP_LIST_TOOLS_HOVER).AsNSImage()];
 233
 234   [[self view] addSubview:searchImageView_];
 235   [[self view] addSubview:searchTextField_];
 236   [[self view] addSubview:menuButton_];
 237 }
 238
 239 - (BOOL)control:(NSControl*)control
 240                textView:(NSTextView*)textView
 241     doCommandBySelector:(SEL)command {
 242   // Forward the message first, to handle grid or search results navigation.
 243   BOOL handled = [delegate_ control:control
 244                            textView:textView
 245                 doCommandBySelector:command];
 246   if (handled)
 247     return YES;
 248
 249   // If the delegate did not handle the escape key, it means the window was not
 250   // dismissed because there were search results. Clear them.
 251   if (command == @selector(complete:)) {
 252     [self clearSearch];
 253     return YES;
 254   }
 255
 256   return NO;
 257 }
 258
 259 - (void)controlTextDidChange:(NSNotification*)notification {
 260   if (bridge_) {
 261     bridge_->SetSearchText(
 262         base::SysNSStringToUTF16([searchTextField_ stringValue]));
 263   }
 264
 265   [delegate_ modelTextDidChange];
 266 }
 267
 268 @end
 269
 270 @interface SearchTextFieldCell : NSTextFieldCell;
 271
 272 - (NSRect)textFrameForFrameInternal:(NSRect)cellFrame;
 273
 274 @end
 275
 276 @implementation SearchTextField
 277
 278 @synthesize textFrameInset = textFrameInset_;
 279
 280 + (Class)cellClass {
 281   return [SearchTextFieldCell class];
 282 }
 283
 284 - (id)initWithFrame:(NSRect)theFrame {
 285   if ((self = [super initWithFrame:theFrame])) {
 286     [self setFocusRingType:NSFocusRingTypeNone];
 287     [self setDrawsBackground:NO];
 288     [self setBordered:NO];
 289   }
 290   return self;
 291 }
 292
 293 - (void)setMarginsWithLeftMargin:(CGFloat)leftMargin
 294                      rightMargin:(CGFloat)rightMargin {
 295   // Find the preferred height for the current text properties, and center.
 296   NSRect viewBounds = [self bounds];
 297   [self sizeToFit];
 298   NSRect textBounds = [self bounds];
 299   textFrameInset_.origin.x = leftMargin;
 300   textFrameInset_.origin.y = floor(NSMidY(viewBounds) - NSMidY(textBounds));
 301   textFrameInset_.size.width = leftMargin + rightMargin;
 302   textFrameInset_.size.height = NSHeight(viewBounds) - NSHeight(textBounds);
 303   [self setFrame:viewBounds];
 304 }
 305
 306 @end
 307
 308 @implementation SearchTextFieldCell
 309
 310 - (NSRect)textFrameForFrameInternal:(NSRect)cellFrame {
 311   SearchTextField* searchTextField =
 312       base::mac::ObjCCastStrict<SearchTextField>([self controlView]);
 313   NSRect insetRect = [searchTextField textFrameInset];
 314   cellFrame.origin.x += insetRect.origin.x;
 315   cellFrame.origin.y += insetRect.origin.y;
 316   cellFrame.size.width -= insetRect.size.width;
 317   cellFrame.size.height -= insetRect.size.height;
 318   return cellFrame;
 319 }
 320
 321 - (NSRect)textFrameForFrame:(NSRect)cellFrame {
 322   return [self textFrameForFrameInternal:cellFrame];
 323 }
 324
 325 - (NSRect)textCursorFrameForFrame:(NSRect)cellFrame {
 326   return [self textFrameForFrameInternal:cellFrame];
 327 }
 328
 329 - (void)resetCursorRect:(NSRect)cellFrame
 330                  inView:(NSView*)controlView {
 331   [super resetCursorRect:[self textCursorFrameForFrame:cellFrame]
 332                   inView:controlView];
 333 }
 334
 335 - (NSRect)drawingRectForBounds:(NSRect)theRect {
 336   return [super drawingRectForBounds:[self textFrameForFrame:theRect]];
 337 }
 338
 339 - (void)editWithFrame:(NSRect)cellFrame
 340                inView:(NSView*)controlView
 341                editor:(NSText*)editor
 342              delegate:(id)delegate
 343                 event:(NSEvent*)event {
 344   [super editWithFrame:[self textFrameForFrame:cellFrame]
 345                 inView:controlView
 346                 editor:editor
 347               delegate:delegate
 348                  event:event];
 349 }
 350
 351 - (void)selectWithFrame:(NSRect)cellFrame
 352                  inView:(NSView*)controlView
 353                  editor:(NSText*)editor
 354                delegate:(id)delegate
 355                   start:(NSInteger)start
 356                  length:(NSInteger)length {
 357   [super selectWithFrame:[self textFrameForFrame:cellFrame]
 358                   inView:controlView
 359                   editor:editor
 360                 delegate:delegate
 361                    start:start
 362                   length:length];
 363 }
 364
 365 @end
 366
 367 @implementation AppListMenuController
 368
 369 - (id)initWithSearchBoxController:(AppsSearchBoxController*)parent {
 370   // Need to initialze super with a NULL model, otherwise it will immediately
 371   // try to populate, which can't be done until setting the parent.
 372   if ((self = [super initWithModel:NULL
 373             useWithPopUpButtonCell:YES])) {
 374     searchBoxController_ = parent;
 375     [super setModel:[parent appListMenu]->menu_model()];
 376   }
 377   return self;
 378 }
 379
 380 - (NSRect)confinementRectForMenu:(NSMenu*)menu
 381                         onScreen:(NSScreen*)screen {
 382   NSPopUpButton* menuButton = [searchBoxController_ menuControl];
 383   // Ensure the menu comes up below the menu button by trimming the window frame
 384   // to a point anchored below the bottom right of the button.
 385   NSRect anchorRect = [menuButton convertRect:[menuButton bounds]
 386                                        toView:nil];
 387   NSPoint anchorPoint = [[menuButton window] convertBaseToScreen:NSMakePoint(
 388       NSMaxX(anchorRect) + kMenuXOffsetFromButton,
 389       NSMinY(anchorRect) - kMenuYOffsetFromButton)];
 390   NSRect confinementRect = [[menuButton window] frame];
 391   confinementRect.size = NSMakeSize(anchorPoint.x - NSMinX(confinementRect),
 392                                     anchorPoint.y - NSMinY(confinementRect));
 393   return confinementRect;
 394 }
 395
 396 @end