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// Copyright (c) 2006-2008 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.
//
// Download utilities.
#ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H__
#define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H__
#include <objidl.h>
#include "base/basictypes.h"
#include "base/task.h"
#include "chrome/browser/views/download_item_view.h"
#include "chrome/views/event.h"
#include "chrome/views/menu.h"
#include "chrome/views/view.h"
class DownloadItem;
class SkBitmap;
namespace download_util {
// DownloadContextMenu ---------------------------------------------------------
// The base class of context menus that provides the various commands.
// Subclasses are responsible for creating and running the menu.
class BaseContextMenu : public Menu::Delegate {
public:
explicit BaseContextMenu(DownloadItem* download);
virtual ~BaseContextMenu();
enum ContextMenuCommands {
SHOW_IN_FOLDER = 1, // Open an Explorer window with the item highlighted
COPY_LINK, // Copy the download's URL to the clipboard
COPY_PATH, // Copy the download's full path to the clipboard
COPY_FILE, // Copy the downloaded file to the clipboard
OPEN_WHEN_COMPLETE, // Open the download when it's finished
ALWAYS_OPEN_TYPE, // Default this file extension to always open
REMOVE_ITEM, // Remove the download
CANCEL, // Cancel the download
MENU_LAST
};
// Menu::Delegate interface
virtual bool IsItemChecked(int id) const;
virtual bool IsItemDefault(int id) const;
virtual std::wstring GetLabel(int id) const;
virtual bool SupportsCommand(int id) const;
virtual bool IsCommandEnabled(int id) const;
virtual void ExecuteCommand(int id);
protected:
// Information source.
DownloadItem* download_;
private:
DISALLOW_EVIL_CONSTRUCTORS(BaseContextMenu);
};
// Menu for the download shelf.
class DownloadShelfContextMenu : public BaseContextMenu {
public:
DownloadShelfContextMenu(DownloadItem* download,
HWND window,
DownloadItemView::BaseDownloadItemModel* model,
const CPoint& point);
virtual ~DownloadShelfContextMenu();
virtual bool IsItemDefault(int id) const;
virtual void ExecuteCommand(int id);
private:
// A model to control the cancel behavior.
DownloadItemView::BaseDownloadItemModel* model_;
DISALLOW_EVIL_CONSTRUCTORS(DownloadShelfContextMenu);
};
// Menu for the download destination view.
class DownloadDestinationContextMenu : public BaseContextMenu {
public:
DownloadDestinationContextMenu(DownloadItem* download,
HWND window,
const CPoint& point);
virtual ~DownloadDestinationContextMenu();
private:
DISALLOW_EVIL_CONSTRUCTORS(DownloadDestinationContextMenu);
};
// DownloadProgressTask --------------------------------------------------------
// A class for managing the timed progress animations for a download view. The
// view must implement an UpdateDownloadProgress() method.
template<class DownloadView>
class DownloadProgressTask : public Task {
public:
DownloadProgressTask(DownloadView* view) : view_(view) {}
virtual ~DownloadProgressTask() {}
virtual void Run() {
view_->UpdateDownloadProgress();
}
private:
DownloadView* view_;
DISALLOW_EVIL_CONSTRUCTORS(DownloadProgressTask);
};
// Download opening ------------------------------------------------------------
// Whether it is OK to open this download.
bool CanOpenDownload(DownloadItem* download);
// Open the file associated with this download (wait for the download to
// complete if it is in progress).
void OpenDownload(DownloadItem* download);
// Download progress animations ------------------------------------------------
// Arc sweep angle for use with downloads of unknown size
const int kUnknownAngleDegrees = 50;
// Rate of progress for use with downloads of unknown size
const int kUnknownIncrementDegrees = 12;
// Start angle for downloads with known size (midnight position)
const int kStartAngleDegrees = -90;
// A circle
const int kMaxDegrees = 360;
// Progress animation timer period, in milliseconds.
const int kProgressRateMs = 150;
// XP and Vista must support icons of this size.
const int kSmallIconSize = 16;
const int kBigIconSize = 32;
// Our progress halo around the icon.
int GetBigProgressIconSize();
const int kSmallProgressIconSize = 39;
const int kBigProgressIconSize = 52;
// The offset required to center the icon in the progress bitmaps.
int GetBigProgressIconOffset();
const int kSmallProgressIconOffset =
(kSmallProgressIconSize - kSmallIconSize) / 2;
enum PaintDownloadProgressSize {
SMALL = 0,
BIG
};
// Paint the common download animation progress foreground and background,
// clipping the foreground to 'percent' full. If percent is -1, then we don't
// know the total size, so we just draw a rotating segment until we're done.
//
// |containing_view| is the View subclass within which the progress animation
// is drawn (generally either DownloadItemTabView or DownloadItemView). We
// require the containing View in addition to the canvas because if we are
// drawing in a right-to-left locale, we need to mirror the position of the
// progress animation within the containing View.
void PaintDownloadProgress(ChromeCanvas* canvas,
views::View* containing_view,
int origin_x,
int origin_y,
int start_angle,
int percent,
PaintDownloadProgressSize size);
void PaintDownloadComplete(ChromeCanvas* canvas,
views::View* containing_view,
int origin_x,
int origin_y,
double animation_progress,
PaintDownloadProgressSize size);
// Drag support ----------------------------------------------------------------
// Helper function for download views to use when acting as a drag source for a
// DownloadItem. If 'icon' is NULL, no image will be accompany the drag.
void DragDownload(const DownloadItem* download, SkBitmap* icon);
// Executable file support -----------------------------------------------------
// Copy all executable file extensions.
void InitializeExeTypes(std::set<std::wstring>* exe_extensions);
} // namespace download_util
#endif // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H__
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