// Copyright (c) 2011 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 "chrome/browser/notifications/balloon_collection_impl.h"

#import <Cocoa/Cocoa.h>

#include "chrome/browser/ui/cocoa/notifications/balloon_view_bridge.h"

Balloon* BalloonCollectionImpl::MakeBalloon(const Notification& notification,
                                            Profile* profile) {
  Balloon* balloon = new Balloon(notification, profile, this);
  balloon->set_view(new BalloonViewBridge());
  gfx::Size size(layout_.min_balloon_width(), layout_.min_balloon_height());
  balloon->set_content_size(size);
  return balloon;
}

// static
gfx::Rect BalloonCollectionImpl::GetMacWorkArea() {
  NSScreen* primary = [[NSScreen screens] objectAtIndex:0];
  return gfx::Rect(NSRectToCGRect([primary visibleFrame]));
}

int BalloonCollectionImpl::Layout::InterBalloonMargin() const {
  return 5;
}

int BalloonCollectionImpl::Layout::HorizontalEdgeMargin() const {
  return 5;
}

int BalloonCollectionImpl::Layout::VerticalEdgeMargin() const {
  return 0;
}

bool BalloonCollectionImpl::Layout::NeedToMoveAboveLeftSidePanels() const {
  return placement_ == VERTICALLY_FROM_TOP_LEFT;
}

bool BalloonCollectionImpl::Layout::NeedToMoveAboveRightSidePanels() const {
  return placement_ == VERTICALLY_FROM_TOP_RIGHT;
}

void BalloonCollectionImpl::PositionBalloons(bool reposition) {
  // Use an animation context so that all the balloons animate together.
  [NSAnimationContext beginGrouping];
  [[NSAnimationContext currentContext] setDuration:0.1f];
  PositionBalloonsInternal(reposition);
  [NSAnimationContext endGrouping];
}

void BalloonCollectionImpl::SetPositionPreference(
    PositionPreference position) {
  if (position == DEFAULT_POSITION)
    position = UPPER_RIGHT;

  // All positioning schemes are vertical, but mac
  // uses a vertically reversed screen orientation.
  if (position == UPPER_RIGHT)
    layout_.set_placement(Layout::VERTICALLY_FROM_BOTTOM_RIGHT);
  else if (position == UPPER_LEFT)
    layout_.set_placement(Layout::VERTICALLY_FROM_BOTTOM_LEFT);
  else if (position == LOWER_LEFT)
    layout_.set_placement(Layout::VERTICALLY_FROM_TOP_LEFT);
  else if (position == LOWER_RIGHT)
    layout_.set_placement(Layout::VERTICALLY_FROM_TOP_RIGHT);
  else
    NOTREACHED();

  layout_.ComputeOffsetToMoveAbovePanels(gfx::Rect());
  PositionBalloons(true);
}

// static
BalloonCollection* BalloonCollection::Create() {
  return new BalloonCollectionImpl();
}