[Autofill] Add Mac implementation for the in-browser process popup view.

chrome/browser/ui/cocoa/autofill/autofill_popup_view_cocoa.mm

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "chrome/browser/ui/cocoa/autofill/autofill_popup_view_cocoa.h"
+
+#include "base/i18n/rtl.h"
+#include "base/logging.h"
+#include "base/sys_string_conversions.h"
+#include "chrome/browser/ui/autofill/autofill_popup_controller.h"
+#include "chrome/browser/ui/cocoa/autofill/autofill_popup_view_bridge.h"
+#include "grit/ui_resources.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebAutofillClient.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/image/image.h"
+#include "ui/gfx/point.h"
+#include "ui/gfx/rect.h"
+
+namespace {
+
+NSColor* BorderColor() {
+  // TODO(isherman): This color does not match the other platforms, but it
+  // matches what the existing UI on Mac has as the color.  The other platforms
+  // have a strange color: the RGB values are almost, but not quite, identical
+  // to each other.
+  // TODO(isherman): Maybe use a system color for this?
+  return [NSColor colorWithCalibratedRed:127 / 255.0
+                                   green:157 / 255.0
+                                    blue:185 / 255.0
+                                   alpha:1.0];
+}
+
+NSColor* SeparatorColor() {
+  return [NSColor colorWithCalibratedWhite:220 / 255.0 alpha:1];
+}
+
+NSColor* HighlightColor() {
+  return [NSColor colorWithCalibratedWhite:205 / 255.0 alpha:1];
+}
+
+}  // anonymous namespace
+
+#pragma mark -
+#pragma mark Private methods
+
+@interface AutofillPopupViewCocoa ()
+
+// Draws a thin separator in the popup UI.
+- (void)drawSeparatorWithBounds:(NSRect)bounds;
+
+// Draws an Autofill suggestion in the given |bounds|, labeled with the given
+// |name| and |subtext| hint.  If the suggestion |isSelected|, then it is drawn
+// with a highlight.  Some suggestions -- such as for credit cards -- might also
+// include an |icon| -- e.g. for the card type.  Finally, if |canDelete| is
+// true, a delete icon is also drawn.
+- (void)drawSuggestionWithName:(NSString*)name
+                       subtext:(NSString*)subtext
+                          icon:(NSImage*)icon
+                        bounds:(NSRect)bounds
+                      selected:(BOOL)isSelected
+                     canDelete:(BOOL)canDelete;
+
+// Returns the icon for the row with the given |index|, or |nil| if there is
+// none.
+- (NSImage*)iconAtIndex:(size_t)index;
+
+@end
+
+@implementation AutofillPopupViewCocoa
+
+#pragma mark -
+#pragma mark Initialisers
+
+- (id)initWithFrame:(NSRect)frame {
+  NOTREACHED();
+  return [self initWithController:NULL frame:frame];
+}
+
+- (id)initWithController:(AutofillPopupController*)controller
+                   frame:(NSRect)frame {
+  self = [super initWithFrame:frame];
+  if (self)
+    controller_ = controller;
+
+  return self;
+}
+
+#pragma mark -
+#pragma mark NSView implementation:
+
+// A slight optimization for drawing:
+// https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CocoaViewsGuide/Optimizing/Optimizing.html
+- (BOOL)isOpaque {
+  return YES;
+}
+
+- (BOOL)isFlipped {
+  // Flipped so that it's easier to share controller logic with other OSes.
+  return YES;
+}
+
+- (void)drawRect:(NSRect)dirtyRect {
+  // If the view is in the process of being destroyed, don't bother drawing.
+  if (!controller_)
+    return;
+
+  // TODO(isherman): Is there a better way to leave room for the border?
+  // TODO(isherman): Drawing the border as part of the content view means that
+  // the rest of the content has to be careful not to overlap the border.
+  // Should the border be part of the window instead?  If not, should the rest
+  // of the view be a subview?  Or should I just draw the window content
+  // carefully?
+  // TODO(isherman): We should consider using asset-based drawing for the
+  // border, creating simple bitmaps for the view's border and background, and
+  // drawing them using NSDrawNinePartImage().
+  NSRect borderRect = NSInsetRect([self bounds], 0.5, 0.5);
+  NSBezierPath* border = [NSBezierPath bezierPathWithRect:borderRect];
+
+  [[NSColor whiteColor] set];
+  [border fill];
+
+  // TODO(isherman): This color does not match the other platforms, but it
+  // matches what the existing UI on Mac has as the color.  The other platforms
+  // have a strange color: the RGB values are almost, but not quite, identical
+  // to each other.
+  // TODO(isherman): Maybe use a system color for this?
+  [BorderColor() set];
+  [border stroke];
+
+  for (size_t i = 0; i < controller_->names().size(); ++i) {
+    // Skip rows outside of the dirty rect.
+    NSRect rowBounds =
+        NSRectFromCGRect(controller_->GetRowBounds(i).ToCGRect());
+    if (!NSIntersectsRect(rowBounds, dirtyRect))
+      continue;
+
+    if (controller_->identifiers()[i] ==
+            WebKit::WebAutofillClient::MenuItemIDSeparator) {
+      [self drawSeparatorWithBounds:rowBounds];
+    } else {
+      NSString* name = SysUTF16ToNSString(controller_->names()[i]);
+      NSString* subtext = SysUTF16ToNSString(controller_->subtexts()[i]);
+      BOOL isSelected = static_cast<int>(i) == controller_->selected_line();
+      [self drawSuggestionWithName:name
+                           subtext:subtext
+                              icon:[self iconAtIndex:i]
+                            bounds:rowBounds
+                          selected:isSelected
+                         canDelete:controller_->CanDelete(i)];
+    }
+  }
+}
+
+- (void)mouseUp:(NSEvent*)theEvent {
+  // If the view is in the process of being destroyed, abort.
+  if (!controller_)
+    return;
+
+  NSPoint location = [self convertPoint:[theEvent locationInWindow]
+                               fromView:nil];
+
+  if (NSPointInRect(location, [self bounds])) {
+    controller_->MouseClicked(static_cast<int>(location.x),
+                              static_cast<int>(location.y));
+  }
+}
+
+- (void)mouseMoved:(NSEvent*)theEvent {
+  // If the view is in the process of being destroyed, abort.
+  if (!controller_)
+    return;
+
+  NSPoint location = [self convertPoint:[theEvent locationInWindow]
+                               fromView:nil];
+
+  controller_->MouseHovered(static_cast<int>(location.x),
+                            static_cast<int>(location.y));
+}
+
+- (void)mouseDragged:(NSEvent*)theEvent {
+  [self mouseMoved:theEvent];
+}
+
+- (void)mouseExited:(NSEvent*)theEvent {
+  // If the view is in the process of being destroyed, abort.
+  if (!controller_)
+    return;
+
+  controller_->MouseExitedPopup();
+}
+
+#pragma mark -
+#pragma mark Public API:
+
+- (void)controllerDestroyed {
+  // Since the |controller_| either already has been destroyed or is about to
+  // be, about the only thing we can safely do with it is to null it out.
+  controller_ = NULL;
+}
+
+#pragma mark -
+#pragma mark Private API:
+
+- (void)drawSeparatorWithBounds:(NSRect)bounds {
+  [SeparatorColor() set];
+  [NSBezierPath fillRect:bounds];
+}
+
+- (void)drawSuggestionWithName:(NSString*)name
+                       subtext:(NSString*)subtext
+                          icon:(NSImage*)icon
+                        bounds:(NSRect)bounds
+                      selected:(BOOL)isSelected
+                     canDelete:(BOOL)canDelete {
+  // If this row is selected, highlight it.
+  if (isSelected) {
+    // TODO(isherman): The highlight color should match the system highlight
+    // color.  Maybe use controlHighlightColor or selectedTextBackgroundColor
+    // for this?
+    [HighlightColor() set];
+    [NSBezierPath fillRect:bounds];
+  }
+
+  BOOL isRTL = base::i18n::IsRTL();
+
+  // TODO(isherman): Set font, colors, and any other appropriate attributes.
+  NSSize nameSize = [name sizeWithAttributes:nil];
+  CGFloat x = bounds.origin.x +
+      (isRTL ?
+       bounds.size.width - AutofillPopupView::kEndPadding - nameSize.width:
+       AutofillPopupView::kEndPadding);
+  CGFloat y = bounds.origin.y + (bounds.size.height - nameSize.height) / 2;
+
+  [name drawAtPoint:NSMakePoint(x, y) withAttributes:nil];
+
+  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
+
+  // The x-coordinate will be updated as each element is drawn.
+  x = bounds.origin.x +
+      (isRTL ?
+       AutofillPopupView::kEndPadding :
+       bounds.size.width - AutofillPopupView::kEndPadding);
+
+  // Draw the delete icon, if one is needed.
+  if (canDelete) {
+    // TODO(isherman): Refactor the cross-platform code so that the delete icon
+    // is a button implemented as a subview, rather than having all its logic be
+    // custom handled by the controller.
+    // TODO(csharp): Create a custom resource for the delete icon.
+    // http://crbug.com/131801
+    NSImage* deleteIcon;
+    if (isSelected && controller_->delete_icon_hovered())
+      deleteIcon = rb.GetNativeImageNamed(IDR_CLOSE_BAR_H).ToNSImage();
+    else
+      deleteIcon = rb.GetNativeImageNamed(IDR_CLOSE_BAR).ToNSImage();
+
+    NSSize iconSize = [deleteIcon size];
+    x += isRTL ? 0 : -iconSize.width;
+    y = bounds.origin.y + (bounds.size.height - iconSize.height) / 2;
+    [deleteIcon drawInRect:NSMakeRect(x, y, iconSize.width, iconSize.height)
+                  fromRect:NSZeroRect
+                 operation:NSCompositeSourceOver
+                  fraction:1.0
+            respectFlipped:YES
+                     hints:nil];
+
+    x += isRTL ?
+        iconSize.width + AutofillPopupView::kIconPadding :
+        -AutofillPopupView::kIconPadding;
+  }
+
+  // Draw the Autofill icon, if one exists.
+  if (icon) {
+    NSSize iconSize = [icon size];
+    x += isRTL ? 0 : -iconSize.width;
+    y = bounds.origin.y + (bounds.size.height - iconSize.height) / 2;
+    [icon drawInRect:NSMakeRect(x, y, iconSize.width, iconSize.height)
+            fromRect:NSZeroRect
+           operation:NSCompositeSourceOver
+            fraction:1.0
+      respectFlipped:YES
+               hints:nil];
+
+    x += isRTL ?
+        iconSize.width + AutofillPopupView::kIconPadding :
+        -AutofillPopupView::kIconPadding;
+  }
+
+  // Draw the subtext.
+  NSSize subtextSize = [subtext sizeWithAttributes:nil];
+  x += isRTL ? 0 : -subtextSize.width;
+  y = bounds.origin.y + (bounds.size.height - subtextSize.height) / 2;
+
+  [subtext drawAtPoint:NSMakePoint(x, y) withAttributes:nil];
+}
+
+- (NSImage*)iconAtIndex:(size_t)index {
+  if (controller_->icons()[index].empty())
+    return nil;
+
+  int iconId = controller_->GetIconResourceID(controller_->icons()[index]);
+  DCHECK_NE(-1, iconId);
+
+  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
+  return rb.GetNativeImageNamed(iconId).ToNSImage();
+}
+
+@end