Mac Web Intents Part 11: Progress view

chrome/browser/ui/cocoa/intents/web_intent_progress_view_controller.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/intents/web_intent_progress_view_controller.h"
+
+#include "base/memory/scoped_nsobject.h"
+#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_control_utils.h"
+#import "chrome/browser/ui/cocoa/flipped_view.h"
+#import "chrome/browser/ui/cocoa/spinner_progress_indicator.h"
+#import "chrome/browser/ui/constrained_window.h"
+#include "grit/theme_resources.h"
+#include "third_party/GTM/AppKit/GTMUILocalizerAndLayoutTweaker.h"
+#include "ui/base/resource/resource_bundle.h"
+
+namespace {
+
+// Vertical space between the progress indicator and the message text field.
+const CGFloat kProgressMessageFieldSpacing = 15.0;
+
+// Joins the two strings with a space between them.
+NSAttributedString* JoinString(NSAttributedString* string1,
+                               NSAttributedString* string2) {
+  if (![string1 length])
+    return string2;
+  if (![string2 length])
+    return string1;
+
+  NSMutableAttributedString* result =
+      [[[NSMutableAttributedString alloc] init] autorelease];
+  [result appendAttributedString:string1];
+  scoped_nsobject<NSAttributedString> space(
+      [[NSAttributedString alloc] initWithString:@" "]);
+  [result appendAttributedString:space];
+  [result appendAttributedString:string2];
+  return result;
+}
+
+}  // namespace
+
+@interface WebIntentProgressViewController ()
+// Updates the message text field and resizes it to fit the given width.
+- (void)updateTextFieldAndResizeToWidth:(CGFloat)width;
+@end
+
+@implementation WebIntentProgressViewController
+
+- (id)init {
+  if ((self = [super init])) {
+    scoped_nsobject<NSView> view(
+        [[FlippedView alloc] initWithFrame:NSZeroRect]);
+    [self setView:view];
+
+    messageTextField_.reset([constrained_window::CreateLabel() retain]);
+    [[self view] addSubview:messageTextField_];
+
+    progressIndicator_.reset(
+        [[SpinnerProgressIndicator alloc] initWithFrame:NSZeroRect]);
+    [progressIndicator_ sizeToFit];
+    [[self view] addSubview:progressIndicator_];
+  }
+  return self;
+}
+
+- (SpinnerProgressIndicator*)progressIndicator {
+  return progressIndicator_;
+}
+
+- (void)setTitle:(NSString*)title {
+  title_.reset([title retain]);
+}
+
+- (void)setMessage:(NSString*)message {
+  message_.reset([message retain]);
+}
+
+- (void)setPercentDone:(int)percent {
+  if (percent == -1) {
+    [progressIndicator_ setIsIndeterminate:YES];
+  } else {
+    [progressIndicator_ setIsIndeterminate:NO];
+    [progressIndicator_ setPercentDone:percent];
+  }
+}
+
+- (NSSize)minimumSizeForInnerWidth:(CGFloat)innerWidth {
+  NSSize progressSize = [progressIndicator_ frame].size;
+  CGFloat width = std::max(innerWidth, progressSize.width);
+  [self updateTextFieldAndResizeToWidth:width];
+  CGFloat height = progressSize.height + NSHeight([messageTextField_ frame]) +
+                   kProgressMessageFieldSpacing;
+  return NSMakeSize(width, height);
+}
+
+- (void)layoutSubviewsWithinFrame:(NSRect)innerFrame {
+  [self updateTextFieldAndResizeToWidth:NSWidth(innerFrame)];
+
+  NSRect progressFrame = [progressIndicator_ frame];
+  progressFrame.origin.x = NSMidX(innerFrame) - NSWidth(progressFrame) / 2.0;
+  progressFrame.origin.y = NSMinY(innerFrame) +
+      NSHeight(innerFrame) / 3.0 - NSHeight(progressFrame) / 2.0;
+
+  NSRect textFrame = [messageTextField_ frame];
+  CGFloat newHeight = NSMaxY(progressFrame) + NSHeight(textFrame) +
+                      kProgressMessageFieldSpacing;
+  if (newHeight > NSHeight(innerFrame))
+    progressFrame.origin.y = NSMinY(innerFrame);
+  [progressIndicator_ setFrame:progressFrame];
+
+  textFrame.origin.x = NSMinX(innerFrame);
+  textFrame.origin.y = NSMaxY(progressFrame) + kProgressMessageFieldSpacing;
+  [messageTextField_ setFrame:textFrame];
+}
+
+- (void)updateTextFieldAndResizeToWidth:(CGFloat)width {
+  NSAttributedString* title = constrained_window::GetAttributedLabelString(
+      title_,
+      ConstrainedWindow::kBoldTextFontStyle,
+      NSCenterTextAlignment,
+      NSLineBreakByWordWrapping);
+  NSAttributedString* message = constrained_window::GetAttributedLabelString(
+      message_,
+      ConstrainedWindow::kTextFontStyle,
+      NSCenterTextAlignment,
+      NSLineBreakByWordWrapping);
+  [messageTextField_ setAttributedStringValue:JoinString(title, message)];
+
+  NSRect frame = NSZeroRect;
+  frame.size.width = width;
+  [messageTextField_ setFrame:frame];
+  [GTMUILocalizerAndLayoutTweaker sizeToFitFixedWidthTextField:
+      messageTextField_];
+}
+
+@end