Implement permission bubble view for Cocoa.

chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.mm

+// Copyright (c) 2014 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/website_settings/permission_bubble_controller.h"
+
+#include <algorithm>
+
+#include "base/mac/foundation_util.h"
+#include "base/mac/mac_util.h"
+#include "base/strings/sys_string_conversions.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_finder.h"
+#import "chrome/browser/ui/chrome_style.h"
+#import "chrome/browser/ui/cocoa/browser_window_controller.h"
+#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_button.h"
+#import "chrome/browser/ui/cocoa/hyperlink_text_view.h"
+#import "chrome/browser/ui/cocoa/info_bubble_view.h"
+#import "chrome/browser/ui/cocoa/info_bubble_window.h"
+#include "chrome/browser/ui/cocoa/website_settings/permission_bubble_cocoa.h"
+#include "chrome/browser/ui/website_settings/permission_bubble_request.h"
+#include "chrome/browser/ui/website_settings/permission_bubble_view.h"
+#include "content/public/browser/user_metrics.h"
+#include "grit/generated_resources.h"
+#include "skia/ext/skia_utils_mac.h"
+#include "ui/base/cocoa/window_size_constants.h"
+#include "ui/base/l10n/l10n_util_mac.h"
+
+using base::UserMetricsAction;
+
+namespace {
+const CGFloat kHorizontalPadding = 20.0f;
+const CGFloat kVerticalPadding = 20.0f;
+const CGFloat kButtonPadding = 10.0f;
+const CGFloat kCheckboxYAdjustment = 2.0f;
+
+const CGFloat kFontSize = 15.0f;
+const base::char16 kBulletPoint = 0x2022;
+
+}  // namespace
+
+@interface PermissionBubbleController ()
+
+// Called when the 'ok' button is pressed.
+- (void)ok:(id)sender;
+
+// Called when the 'allow' button is pressed.
+- (void)onAllow:(id)sender;
+
+// Called when the 'block' button is pressed.
+- (void)onBlock:(id)sender;
+
+// Called when the 'customize' button is pressed.
+- (void)onCustomize:(id)sender;
+
+// Called when a checkbox changes from checked to unchecked, or vice versa.
+- (void)onCheckboxChanged:(id)sender;
+
+@end
+
+@implementation PermissionBubbleController
+
+- (id)initWithParentWindow:(NSWindow*)parentWindow
+                    bridge:(PermissionBubbleCocoa*)bridge {
+  DCHECK(parentWindow);
+  DCHECK(bridge);
+  base::scoped_nsobject<InfoBubbleWindow> window([[InfoBubbleWindow alloc]
+      initWithContentRect:ui::kWindowSizeDeterminedLater
+                styleMask:NSBorderlessWindowMask
+                  backing:NSBackingStoreBuffered
+                    defer:NO]);
+  [window setAllowedAnimations:info_bubble::kAnimateNone];
+  if ((self = [super initWithWindow:window
+                       parentWindow:parentWindow
+                         anchoredAt:NSZeroPoint])) {
+    [self setShouldCloseOnResignKey:NO];
+    [[self bubble] setArrowLocation:info_bubble::kTopLeft];
+    bridge_ = bridge;
+  }
+  return self;
+}
+
+- (void)windowWillClose:(NSNotification*)notification {
+  bridge_->OnBubbleClosing();
+  [super windowWillClose:notification];
+}
+
+- (void)showAtAnchor:(NSPoint)anchorPoint
+        withDelegate:(PermissionBubbleView::Delegate*)delegate
+         forRequests:(const std::vector<PermissionBubbleRequest*>&)requests
+         acceptStates:(const std::vector<bool>&)acceptStates
+    customizationMode:(BOOL)customizationMode {
+  DCHECK(delegate);
+  DCHECK(!customizationMode || (requests.size() == acceptStates.size()));
+  delegate_ = delegate;
+
+  NSView* contentView = [[self window] contentView];
+  DCHECK([[contentView subviews] count] == 0);
+
+  // Create one button to use as a guide for the permissions' y-offsets.
+  base::scoped_nsobject<NSView> allowOrOkButton;
+  if (customizationMode) {
+    allowOrOkButton.reset([[self buttonWithTitle:@"OK"
+                                          action:@selector(ok:)
+                                      pairedWith:nil] retain]);
+  } else {
+    allowOrOkButton.reset([[self buttonWithTitle:@"Allow"
+                                          action:@selector(onAllow:)
+                                      pairedWith:nil] retain]);
+  }
+  CGFloat yOffset = 2 * kVerticalPadding + NSMaxY([allowOrOkButton frame]);
+  BOOL singlePermission = requests.size() == 1;
+
+  checkboxes_.reset(customizationMode ? [[NSMutableArray alloc] init] : nil);
+  for (auto it = requests.begin(); it != requests.end(); it++) {
+    base::scoped_nsobject<NSView> permissionView;
+    if (customizationMode) {
+      int index = it - requests.begin();
+      permissionView.reset(
+          [[self checkboxForRequest:(*it)
+                            checked:acceptStates[index] ? YES : NO] retain]);
+      [base::mac::ObjCCastStrict<NSButton>(permissionView) setTag:index];
+      [checkboxes_ addObject:permissionView];
+    } else {
+      permissionView.reset([[self labelForRequest:(*it)
+                                  isSingleRequest:singlePermission] retain]);
+    }
+    NSPoint origin = [permissionView frame].origin;
+    origin.x += kHorizontalPadding;
+    origin.y += yOffset;
+    [permissionView setFrameOrigin:origin];
+    [contentView addSubview:permissionView];
+
+    yOffset += NSHeight([permissionView frame]);
+  }
+
+  // The maximum width of the above permissions will dictate the width of the
+  // bubble.  It is calculated here so that it can be used for the positioning
+  // of the buttons.
+  NSRect bubbleFrame = NSZeroRect;
+  for (NSView* view in [contentView subviews]) {
+    bubbleFrame = NSUnionRect(
+        bubbleFrame, NSInsetRect([view frame], -kHorizontalPadding, 0));
+  }
+
+  // Position the allow/ok button.
+  CGFloat xOrigin = NSWidth(bubbleFrame) - NSWidth([allowOrOkButton frame]) -
+      kHorizontalPadding;
+  [allowOrOkButton setFrameOrigin:NSMakePoint(xOrigin, kVerticalPadding)];
+  [contentView addSubview:allowOrOkButton];
+
+  if (!customizationMode) {
+    base::scoped_nsobject<NSView> blockButton(
+        [[self buttonWithTitle:@"Block"
+                        action:@selector(onBlock:)
+                    pairedWith:allowOrOkButton] retain]);
+    xOrigin = NSMinX([allowOrOkButton frame]) - NSWidth([blockButton frame]) -
+        kButtonPadding;
+    [blockButton setFrameOrigin:NSMakePoint(xOrigin, kVerticalPadding)];
+    [contentView addSubview:blockButton];
+  }
+
+  if (!singlePermission && !customizationMode) {
+    base::scoped_nsobject<NSView> customizeButton(
+        [[self customizationButton] retain]);
+    // The Y center should match the Y centers of the buttons.
+    CGFloat customizeButtonYOffset = kVerticalPadding +
+      std::ceil(0.5f * (NSHeight([allowOrOkButton frame]) -
+                        NSHeight([customizeButton frame])));
+    [customizeButton setFrameOrigin:NSMakePoint(kHorizontalPadding,
+                                                customizeButtonYOffset)];
+    [contentView addSubview:customizeButton];
+  }
+
+  if (!singlePermission) {
+    base::scoped_nsobject<NSView> titleView(
+       [[self titleForMultipleRequests] retain]);
+    [contentView addSubview:titleView];
+    [titleView setFrameOrigin:NSMakePoint(kHorizontalPadding,
+                                          kVerticalPadding + yOffset)];
+    yOffset += NSHeight([titleView frame]) + kVerticalPadding;
+  }
+
+  bubbleFrame.size.height = yOffset + kVerticalPadding;
+  bubbleFrame = [[self window] frameRectForContentRect:bubbleFrame];
+  [[self window] setFrame:bubbleFrame display:NO];
+
+  [self setAnchorPoint:anchorPoint];
+  [self showWindow:nil];
+}
+
+- (NSView*)labelForRequest:(PermissionBubbleRequest*)request
+           isSingleRequest:(BOOL)singleRequest {
+  DCHECK(request);
+  base::scoped_nsobject<NSTextField> permissionLabel(
+      [[NSTextField alloc] initWithFrame:NSZeroRect]);
+  base::string16 label;
+  if (!singleRequest) {
+    label.push_back(kBulletPoint);
+    label.push_back(' ');
+  }
+  if (singleRequest) {
+    // TODO(leng):  Make the appropriate call when it's working.  It should call
+    // GetMessageText(), but it's not returning the correct string yet.
+    label += request->GetMessageTextFragment();
+  } else {
+    label += request->GetMessageTextFragment();
+  }
+  [permissionLabel setDrawsBackground:NO];
+  [permissionLabel setBezeled:NO];
+  [permissionLabel setEditable:NO];
+  [permissionLabel setSelectable:NO];
+  [permissionLabel setStringValue:base::SysUTF16ToNSString(label)];
+  [permissionLabel sizeToFit];
+  return permissionLabel.autorelease();
+}
+
+- (NSView*)titleForMultipleRequests {
+  base::scoped_nsobject<NSTextField> titleView(
+      [[NSTextField alloc] initWithFrame:NSZeroRect]);
+  [titleView setDrawsBackground:NO];
+  [titleView setBezeled:NO];
+  [titleView setEditable:NO];
+  [titleView setSelectable:NO];
+  [titleView setStringValue:@"This site would like to:"];
+  [titleView setFont:[NSFont systemFontOfSize:kFontSize]];
+  [titleView sizeToFit];
+  return titleView.autorelease();
+}
+
+- (NSView*)checkboxForRequest:(PermissionBubbleRequest*)request
+                      checked:(BOOL)checked {
+  DCHECK(request);
+  base::scoped_nsobject<NSButton> checkbox(
+      [[NSButton alloc] initWithFrame:NSZeroRect]);
+  [checkbox setButtonType:NSSwitchButton];
+  base::string16 permission = request->GetMessageTextFragment();
+  [checkbox setTitle:base::SysUTF16ToNSString(permission)];
+  [checkbox setState:(checked ? NSOnState : NSOffState)];
+  [checkbox setTarget:self];
+  [checkbox setAction:@selector(onCheckboxChanged:)];
+  [checkbox sizeToFit];
+  [checkbox setFrameOrigin:NSMakePoint(0, kCheckboxYAdjustment)];
+  return checkbox.autorelease();
+}
+
+- (NSView*)customizationButton {
+  NSColor* linkColor =
+      gfx::SkColorToCalibratedNSColor(chrome_style::GetLinkColor());
+  base::scoped_nsobject<NSButton> customizeButton(
+      [[NSButton alloc] initWithFrame:NSZeroRect]);
+  [customizeButton setButtonType:NSMomentaryChangeButton];
+  [customizeButton setAttributedTitle:[[NSAttributedString alloc]
+      initWithString:@"Customize"
+          attributes:@{ NSForegroundColorAttributeName : linkColor }]];
+  [customizeButton setTarget:self];
+  [customizeButton setAction:@selector(onCustomize:)];
+  [customizeButton setBordered:NO];
+  [customizeButton sizeToFit];
+  return customizeButton.autorelease();
+}
+
+- (NSView*)buttonWithTitle:(NSString*)title
+                    action:(SEL)action
+                pairedWith:(NSView*)pairedButton {
+  base::scoped_nsobject<NSButton> button(
+      [[ConstrainedWindowButton alloc] initWithFrame:NSZeroRect]);
+  [button setButtonType:NSMomentaryPushInButton];
+  [button setTitle:title];
+  [button setTarget:self];
+  [button setAction:action];
+  [button sizeToFit];
+  if (pairedButton) {
+    NSRect buttonFrame = [button frame];
+    NSRect pairedFrame = [pairedButton frame];
+    CGFloat width = std::max(NSWidth(buttonFrame), NSWidth(pairedFrame));
+    [button setFrameSize:NSMakeSize(width, buttonFrame.size.height)];
+    [pairedButton setFrameSize:NSMakeSize(width, pairedFrame.size.height)];
+  }
+  return button.autorelease();
+}
+
+- (void)ok:(id)sender {
+  DCHECK(delegate_);
+  delegate_->Closing();
+}
+
+- (void)onAllow:(id)sender {
+  DCHECK(delegate_);
+  delegate_->Accept();
+}
+
+- (void)onBlock:(id)sender {
+  DCHECK(delegate_);
+  delegate_->Deny();
+}
+
+- (void)onCustomize:(id)sender {
+  DCHECK(delegate_);
+  delegate_->SetCustomizationMode();
+}
+
+- (void)onCheckboxChanged:(id)sender {
+  DCHECK(delegate_);
+  NSButton* checkbox = base::mac::ObjCCastStrict<NSButton>(sender);
+  delegate_->ToggleAccept([checkbox tag], [checkbox state] == NSOnState);
+}
+
+@end  // implementation PermissionBubbleController