wrongbaseurl OSX App List Pager and root view controller.

ui/app_list/cocoa/app_list_view_controller.mm

+// Copyright 2013 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 "ui/app_list/cocoa/app_list_view_controller.h"
+
+#include "base/mac/foundation_util.h"
+#include "skia/ext/skia_utils_mac.h"
+#include "ui/app_list/app_list_constants.h"
+#include "ui/app_list/app_list_view_delegate.h"
+#import "ui/app_list/cocoa/apps_grid_controller.h"
+
+namespace {
+
+// The roundedness of the corners of the bubble.
+const CGFloat kBubbleCornerRadius = 3;
+
+// Padding between the bottom of the pager and the bottom of the view.
+const CGFloat kViewPagerOffsetY = 12;
+// Padding between the bottom of the grid and the bottom of the view.
+const CGFloat kViewGridOffsetY = 38;
+
+// Minimum margin on either side of the pager. If the pager grows beyond this,
+// the segment size is reduced.
+const CGFloat kMinPagerMargin = 40;
+// Maximum width of a single segment.
+const CGFloat kMaxSegmentWidth = 80;
+
+}  // namespace
+
+@interface BackgroundView : NSView;
+@end
+
+@implementation BackgroundView
+
+- (void)drawRect:(NSRect)dirtyRect {
+  [NSGraphicsContext saveGraphicsState];
+  [gfx::SkColorToCalibratedNSColor(app_list::kContentsBackgroundColor) set];
+  [[NSBezierPath bezierPathWithRoundedRect:[self bounds]
+                                   xRadius:kBubbleCornerRadius
+                                   yRadius:kBubbleCornerRadius] addClip];
+  NSRectFill([self bounds]);
+  [NSGraphicsContext restoreGraphicsState];
+}
+
+@end
+
+@interface AppListViewController ()
+
+- (void)loadAndSetView;
+
+- (void)onPagerClicked:(id)sender;
+
+@end
+
+@implementation AppListViewController
+
+- (id)init {
+  if ((self = [super init])) {
+    appsGridController_.reset([[AppsGridController alloc] init]);
+    [self loadAndSetView];
+
+    [self totalPagesChanged];
+    [self selectedPageChanged:0
+                  newSelected:0];
+    [appsGridController_ setPaginationObserver:self];
+  }
+  return self;
+}
+
+- (void)dealloc {
+  [appsGridController_ setPaginationObserver:nil];
+  if (delegate_)
+    [appsGridController_ setDelegate:NULL];
+  [super dealloc];
+}
+
+- (AppsGridController*)appsGridController {
+  return appsGridController_;
+}
+
+- (NSSegmentedControl*)pagerControl {
+  return pagerControl_;
+}
+
+- (app_list::AppListViewDelegate*)delegate {
+  return delegate_.get();
+}
+
+- (void)setDelegate:(scoped_ptr<app_list::AppListViewDelegate>)newDelegate {
+  delegate_.reset(newDelegate.release());
+  [appsGridController_ setDelegate:delegate_.get()];
+}
+
+-(void)loadAndSetView {
+  pagerControl_.reset([[NSSegmentedControl alloc] initWithFrame:NSZeroRect]);
+  [pagerControl_ setSegmentStyle:NSSegmentStyleRounded];
+  [pagerControl_ setTarget:self];
+  [pagerControl_ setAction:@selector(onPagerClicked:)];
+
+  [[appsGridController_ view] setFrameOrigin:NSMakePoint(0, kViewGridOffsetY)];
+
+  NSRect backgroundRect = [[appsGridController_ view] bounds];
+  backgroundRect.size.height += kViewGridOffsetY;
+  scoped_nsobject<BackgroundView> backgroundView(
+      [[BackgroundView alloc] initWithFrame:backgroundRect]);
+
+  [backgroundView addSubview:pagerControl_];
+  [backgroundView addSubview:[appsGridController_ view]];
+  [self setView:backgroundView];
+}
+
+- (void)onPagerClicked:(id)sender {
+  int selectedSegment = [sender selectedSegment];
+  if (selectedSegment < 0)
+    return;  // No selection.
+
+  int pageIndex = [[sender cell] tagForSegment:selectedSegment];
+  if (pageIndex >= 0)
+    [appsGridController_ scrollToPage:pageIndex];
+}
+
+- (void)totalPagesChanged {
+  size_t pageCount = [appsGridController_ pageCount];
+  [pagerControl_ setSegmentCount:pageCount];
+
+  NSRect viewFrame = [[self view] frame];
+  CGFloat segmentWidth = std::min(
+      kMaxSegmentWidth,
+      (viewFrame.size.width - 2 * kMinPagerMargin) / pageCount);
+
+  for (size_t i = 0; i < pageCount; ++i) {
+    [pagerControl_ setWidth:segmentWidth
+                 forSegment:i];
+    [[pagerControl_ cell] setTag:i
+                      forSegment:i];
+  }
+
+  // Center in view.
+  [pagerControl_ sizeToFit];
+  [pagerControl_ setFrameOrigin:
+      NSMakePoint(NSMidX(viewFrame) - NSMidX([pagerControl_ bounds]),
+                  kViewPagerOffsetY)];
+}
+
+- (void)selectedPageChanged:(int)oldSelected
+                newSelected:(int)newSelected {
+  [pagerControl_ selectSegmentWithTag:newSelected];
+}
+
+@end