Re-implement form validation message UI with native widgets. (Common and Mac)

chrome/browser/ui/cocoa/validation_message_bubble_cocoa.mm

+// Copyright (c) 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.
+
+#include "base/memory/scoped_ptr.h"
+#include "base/strings/sys_string_conversions.h"
+#include "chrome/browser/ui/validation_message_bubble.h"
+#include "content/public/browser/render_widget_host.h"
+#include "content/public/browser/render_widget_host_view.h"
+#include "grit/theme_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+#import "chrome/browser/ui/cocoa/flipped_view.h"
+#import "chrome/browser/ui/cocoa/info_bubble_view.h"
+#import "chrome/browser/ui/cocoa/info_bubble_window.h"
+#import "chrome/browser/ui/cocoa/validation_message_bubble_controller.h"
+#import "third_party/GTM/AppKit/GTMUILocalizerAndLayoutTweaker.h"
+
+const CGFloat kWindowInitialWidth = 200;
+const CGFloat kWindowInitialHeight = 100;
+const CGFloat kWindowMinWidth = 64;
+const CGFloat kWindowMaxWidth = 256;
+const CGFloat kWindowPadding = 8;
+const CGFloat kIconTextMargin = 4;
+const CGFloat kTextVerticalMargin = 4;
+
+@implementation ValidationMessageBubbleController
+
+- (id)init:(NSWindow*)parentWindow
+anchoredAt:(NSPoint)anchorPoint
+  mainText:(const string16&)mainText
+   subText:(const string16&)subText {
+
+  scoped_nsobject<InfoBubbleWindow> window([[InfoBubbleWindow alloc]
+      initWithContentRect:
+          NSMakeRect(0, 0, kWindowInitialWidth, kWindowInitialHeight)
+                styleMask:NSBorderlessWindowMask
+                  backing:NSBackingStoreBuffered
+                    defer:NO]);
+  if ((self = [super initWithWindow:window.get()
+                       parentWindow:parentWindow
+                         anchoredAt:anchorPoint])) {
+    [[self bubble] setArrowLocation:info_bubble::kTopLeft];
+    self.shouldOpenAsKeyWindow = NO;
+
+    NSView* contentView = [ValidationMessageBubbleController
+        constructContentView:mainText subText:subText];
+    [[window contentView] addSubview:contentView];
+    NSRect contentFrame = [contentView frame];
+    NSRect windowFrame = [window frame];
+    windowFrame.size.width = NSWidth(contentFrame) + kWindowPadding * 2;
+    windowFrame.size.height = NSHeight(contentFrame) + kWindowPadding * 2
+        + info_bubble::kBubbleArrowHeight;
+    [window setFrame:windowFrame display:nil];
+
+    [self showWindow:nil];
+  }
+  return self;
+}
+
++ (NSView*)constructContentView:(const string16&)mainText
+                        subText:(const string16&)subText {
+  NSRect contentFrame = NSMakeRect(kWindowPadding, kWindowPadding, 0, 0);
+  FlippedView* contentView = [[FlippedView alloc] initWithFrame:contentFrame];
+
+  NSImage* image = ResourceBundle::GetSharedInstance()
+      .GetNativeImageNamed(IDR_INPUT_ALERT).ToNSImage();
+  scoped_nsobject<NSImageView> imageView([[NSImageView alloc]
+      initWithFrame:NSMakeRect(0, 0, image.size.width, image.size.height)]);
+  [imageView setImageFrameStyle:NSImageFrameNone];
+  [imageView setImage:image];
+  [contentView addSubview:imageView];
+  contentFrame.size.height = image.size.height;
+
+  const CGFloat textX = NSWidth([imageView frame]) + kIconTextMargin;
+  NSRect textFrame = NSMakeRect(textX, 0, NSWidth(contentFrame) - textX, 0);
+  scoped_nsobject<NSTextField> text(
+      [[NSTextField alloc] initWithFrame:textFrame]);
+  [text setStringValue:base::SysUTF16ToNSString(mainText)];
+  [text setFont:[NSFont systemFontOfSize:[NSFont systemFontSize]]];
+  [text setEditable:NO];
+  [text setBezeled:NO];
+  const CGFloat minTextWidth = kWindowMinWidth - kWindowPadding * 2 - textX;
+  const CGFloat maxTextWidth = kWindowMaxWidth - kWindowPadding * 2 - textX;
+  [text sizeToFit];
+  [contentView addSubview:text];
+  textFrame = [text frame];
+  if (NSWidth(textFrame) < minTextWidth) {
+    textFrame.size.width = minTextWidth;
+    [text setFrame:textFrame];
+  } else if (NSWidth(textFrame) > maxTextWidth) {
+    textFrame.size.width = maxTextWidth;
+    textFrame.size.height = 0;
+    [text setFrame:textFrame];
+    [GTMUILocalizerAndLayoutTweaker sizeToFitFixedWidthTextField:text];
+    textFrame = [text frame];
+  }
+  contentFrame.size.width = NSMaxX(textFrame);
+  contentFrame.size.height =
+      std::max(NSHeight(contentFrame), NSHeight(textFrame));
+
+  if (!subText.empty()) {
+    NSRect subTextFrame = NSMakeRect(
+        textX, NSMaxY(textFrame) + kTextVerticalMargin,
+        NSWidth(textFrame), 0);
+    scoped_nsobject<NSTextField> text2(
+        [[NSTextField alloc] initWithFrame:subTextFrame]);
+    [text2 setStringValue:base::SysUTF16ToNSString(subText)];
+    [text2 setFont:[NSFont systemFontOfSize:[NSFont smallSystemFontSize]]];
+    [text2 setEditable:NO];
+    [text2 setBezeled:NO];
+    [text2 sizeToFit];
+    subTextFrame = [text2 frame];
+    if (NSWidth(subTextFrame) > maxTextWidth) {
+      subTextFrame.size.width = maxTextWidth;
+      [text2 setFrame:subTextFrame];
+      [GTMUILocalizerAndLayoutTweaker sizeToFitFixedWidthTextField:text2];
+      subTextFrame = [text2 frame];
+    }
+    [contentView addSubview:text2];
+    contentFrame.size.width =
+        std::max(NSWidth(contentFrame), NSMaxX(subTextFrame));
+    contentFrame.size.height =
+        std::max(NSHeight(contentFrame), NSMaxY(subTextFrame));
+  }
+
+  [contentView setFrame:contentFrame];
+  return contentView;
+}
+
+
+@end  // implementation ValidationMessageBubbleCocoa
+
+// ----------------------------------------------------------------
+
+namespace {
+
+class ValidationMessageBubbleCocoa : public chrome::ValidationMessageBubble {
+ public:
+  ValidationMessageBubbleCocoa(content::RenderWidgetHost* widget_host,
+                               const gfx::Rect& anchor_in_screen,
+                               const string16& main_text,
+                               const string16& sub_text) {
+    NSWindow* parent_window = [widget_host->GetView()->GetNativeView() window];
+    NSPoint anchor_point = NSMakePoint(
+        anchor_in_screen.x() + anchor_in_screen.width() / 2,
+        NSHeight([[parent_window screen] frame])
+            - (anchor_in_screen.y() + anchor_in_screen.height()));
+    controller_.reset([[[ValidationMessageBubbleController alloc]
+                        init:parent_window
+                  anchoredAt:anchor_point
+                    mainText:main_text
+                     subText:sub_text] retain]);
+  }
+
+  virtual ~ValidationMessageBubbleCocoa() {
+    [controller_.get() close];
+  }
+
+ private:
+  scoped_nsobject<ValidationMessageBubbleController> controller_;
+};
+
+}
+
+// ----------------------------------------------------------------
+
+namespace chrome {
+
+scoped_ptr<ValidationMessageBubble> ValidationMessageBubble::CreateAndShow(
+    content::RenderWidgetHost* widget_host,
+    const gfx::Rect& anchor_in_screen,
+    const string16& main_text,
+    const string16& sub_text) {
+  return scoped_ptr<ValidationMessageBubble>(new ValidationMessageBubbleCocoa(
+      widget_host, anchor_in_screen, main_text, sub_text)).Pass();
+}
+
+}