Upstream Chrome on iOS source code [6/11].

ios/chrome/browser/ui/page_not_available_controller.mm

+// Copyright 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 "ios/chrome/browser/ui/page_not_available_controller.h"
+
+#include "base/i18n/rtl.h"
+#include "base/logging.h"
+#include "base/mac/objc_property_releaser.h"
+#include "base/mac/scoped_nsobject.h"
+#include "base/strings/sys_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
+#include "components/strings/grit/components_strings.h"
+#include "components/url_formatter/url_formatter.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/l10n/l10n_util_mac.h"
+
+namespace {
+// Top padding for |self.titleLabel|.
+const CGFloat kTitleLabelTopPadding = 20.0;
+// Height for |self.titleLabel|.
+const CGFloat kTitleLabelHeight = 38.0;
+// Top padding for |self.descriptionView|.
+const CGFloat kDescriptionViewTopPadding = 66.0;
+// Bottom padding for |self.descriptionView|.
+const CGFloat kDescriptionViewBottomPadding = 20.0;
+// Horizontal padding between subviews and |self.view|.
+const CGFloat kHorizontalPadding = 20.0;
+// Font size for |self.titleLabel|.
+const CGFloat kTitleLabelFontSize = 18.0;
+// Font size for |self.descriptionView|.
+const CGFloat kDescriptionViewFontSize = 17.0;
+}
+
+@interface PageNotAvailableController () {
+  base::mac::ObjCPropertyReleaser _propertyReleaser_PageNotAvailableController;
+}
+
+// The title label displayed centered at the top of the screen.
+@property(nonatomic, retain) UILabel* titleLabel;
+
+// TextView containing a detailed description of the problem.
+@property(nonatomic, retain) UITextView* descriptionView;
+
+@end
+
+@implementation PageNotAvailableController
+
+@synthesize titleLabel = _titleLabel;
+@synthesize descriptionView = _descriptionView;
+@synthesize descriptionText = _descriptionText;
+
+- (instancetype)initWithUrl:(const GURL&)url {
+  self = [super initWithNibName:nil url:url];
+  if (self) {
+    _propertyReleaser_PageNotAvailableController.Init(
+        self, [PageNotAvailableController class]);
+
+    // Use the host as the page title, unless the URL has a custom scheme.
+    if (self.url.SchemeIsHTTPOrHTTPS()) {
+      self.title = base::SysUTF16ToNSString(
+          url_formatter::IDNToUnicode(self.url.host()));
+    } else {
+      base::string16 formattedURL = url_formatter::FormatUrl(
+          self.url, url_formatter::kFormatUrlOmitNothing,
+          net::UnescapeRule::NORMAL, nullptr, nullptr, nullptr);
+      if (base::i18n::IsRTL()) {
+        base::i18n::WrapStringWithLTRFormatting(&formattedURL);
+      }
+      self.title = base::SysUTF16ToNSString(formattedURL);
+    }
+
+    // |self.view| setup.
+    CGRect windowBounds = [UIApplication sharedApplication].keyWindow.bounds;
+    base::scoped_nsobject<UIView> view(
+        [[UIView alloc] initWithFrame:windowBounds]);
+    [view setBackgroundColor:[UIColor whiteColor]];
+    [view setAutoresizingMask:(UIViewAutoresizingFlexibleWidth |
+                               UIViewAutoresizingFlexibleHeight)];
+    self.view = view;
+
+    // |self.titleLabel| setup.
+    CGRect titleLabelFrame = windowBounds;
+    titleLabelFrame.origin.x += kHorizontalPadding;
+    titleLabelFrame.size.width -= 2.0 * kHorizontalPadding;
+    titleLabelFrame.origin.y += kTitleLabelTopPadding;
+    titleLabelFrame.size.height = kTitleLabelHeight;
+    _titleLabel = [[UILabel alloc] initWithFrame:titleLabelFrame];
+    _titleLabel.text =
+        l10n_util::GetNSString(IDS_ERRORPAGES_HEADING_NOT_AVAILABLE);
+    _titleLabel.autoresizingMask = (UIViewAutoresizingFlexibleBottomMargin |
+                                    UIViewAutoresizingFlexibleWidth);
+    _titleLabel.font =
+        [UIFont fontWithName:@"Helvetica-Bold" size:kTitleLabelFontSize];
+    _titleLabel.textAlignment = NSTextAlignmentCenter;
+    [self.view addSubview:_titleLabel];
+
+    // |self.descriptionView| setup.
+    CGRect descriptionViewFrame = windowBounds;
+    descriptionViewFrame.origin.x += kHorizontalPadding;
+    descriptionViewFrame.size.width -= 2 * kHorizontalPadding;
+    descriptionViewFrame.origin.y = kDescriptionViewTopPadding;
+    descriptionViewFrame.size.height = CGRectGetHeight(windowBounds) -
+                                       descriptionViewFrame.origin.y -
+                                       kDescriptionViewBottomPadding;
+    _descriptionView = [[UITextView alloc] initWithFrame:descriptionViewFrame];
+    _descriptionView.text = l10n_util::GetNSStringF(
+        IDS_ERRORPAGES_SUMMARY_NOT_AVAILABLE_NO_EMPHASIS,
+        base::UTF8ToUTF16(self.url.spec()));
+    _descriptionView.autoresizingMask =
+        UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
+    _descriptionView.font = [UIFont systemFontOfSize:kDescriptionViewFontSize];
+    _descriptionView.editable = NO;
+    [self.view addSubview:_descriptionView];
+  }
+  return self;
+}
+
+- (instancetype)initWithNibName:(NSString*)nibName
+                            url:(const GURL&)url NS_UNAVAILABLE {
+  NOTREACHED();
+  return nil;
+}
+
+- (void)setDescriptionText:(NSString*)descriptionText {
+  _descriptionText = descriptionText;
+  _descriptionView.text = descriptionText;
+}
+
+@end