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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_WIN_SHORTCUT_H_
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#define BASE_WIN_SHORTCUT_H_
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#include "base/files/file_path.h"
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#include "base/logging.h"
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#include "base/strings/string16.h"
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enum ShortcutOperation {
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// Create a new shortcut (overwriting if necessary).
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SHORTCUT_CREATE_ALWAYS = 0,
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// Overwrite an existing shortcut (fails if the shortcut doesn't exist).
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// If the arguments are not specified on the new shortcut, keep the old
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// shortcut's arguments.
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SHORTCUT_REPLACE_EXISTING,
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// Update specified properties only on an existing shortcut.
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SHORTCUT_UPDATE_EXISTING,
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// Properties for shortcuts. Properties set will be applied to the shortcut on
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// creation/update, others will be ignored.
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// Callers are encouraged to use the setters provided which take care of
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// setting |options| as desired.
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struct ShortcutProperties {
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enum IndividualProperties {
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PROPERTIES_TARGET = 1U << 0,
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PROPERTIES_WORKING_DIR = 1U << 1,
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PROPERTIES_ARGUMENTS = 1U << 2,
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PROPERTIES_DESCRIPTION = 1U << 3,
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PROPERTIES_ICON = 1U << 4,
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PROPERTIES_APP_ID = 1U << 5,
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PROPERTIES_DUAL_MODE = 1U << 6,
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// Be sure to update the values below when adding a new property.
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PROPERTIES_BASIC = PROPERTIES_TARGET |
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PROPERTIES_WORKING_DIR |
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PROPERTIES_ARGUMENTS |
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PROPERTIES_DESCRIPTION |
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PROPERTIES_WIN7 = PROPERTIES_APP_ID | PROPERTIES_DUAL_MODE,
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PROPERTIES_ALL = PROPERTIES_BASIC | PROPERTIES_WIN7
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ShortcutProperties() : icon_index(-1), dual_mode(false), options(0U) {}
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void set_target(const FilePath& target_in) {
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options |= PROPERTIES_TARGET;
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void set_working_dir(const FilePath& working_dir_in) {
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working_dir = working_dir_in;
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options |= PROPERTIES_WORKING_DIR;
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void set_arguments(const string16& arguments_in) {
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// Size restriction as per MSDN at http://goo.gl/TJ7q5.
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DCHECK(arguments_in.size() < MAX_PATH);
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arguments = arguments_in;
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options |= PROPERTIES_ARGUMENTS;
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void set_description(const string16& description_in) {
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// Size restriction as per MSDN at http://goo.gl/OdNQq.
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DCHECK(description_in.size() < MAX_PATH);
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description = description_in;
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options |= PROPERTIES_DESCRIPTION;
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void set_icon(const FilePath& icon_in, int icon_index_in) {
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icon_index = icon_index_in;
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options |= PROPERTIES_ICON;
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void set_app_id(const string16& app_id_in) {
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options |= PROPERTIES_APP_ID;
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void set_dual_mode(bool dual_mode_in) {
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dual_mode = dual_mode_in;
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options |= PROPERTIES_DUAL_MODE;
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// The target to launch from this shortcut. This is mandatory when creating
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// The name of the working directory when launching the shortcut.
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// The arguments to be applied to |target| when launching from this shortcut.
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// The length of this string must be less than MAX_PATH.
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// The localized description of the shortcut.
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// The length of this string must be less than MAX_PATH.
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string16 description;
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// The path to the icon (can be a dll or exe, in which case |icon_index| is
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// The app model id for the shortcut (Win7+).
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// Whether this is a dual mode shortcut (Win8+).
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// Bitfield made of IndividualProperties. Properties set in |options| will be
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// set on the shortcut, others will be ignored.
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// This method creates (or updates) a shortcut link at |shortcut_path| using the
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// information given through |properties|.
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// Ensure you have initialized COM before calling into this function.
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// |operation|: a choice from the ShortcutOperation enum.
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// If |operation| is SHORTCUT_REPLACE_EXISTING or SHORTCUT_UPDATE_EXISTING and
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// |shortcut_path| does not exist, this method is a no-op and returns false.
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BASE_EXPORT bool CreateOrUpdateShortcutLink(
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const FilePath& shortcut_path,
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const ShortcutProperties& properties,
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ShortcutOperation operation);
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// Resolves Windows shortcut (.LNK file)
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// This methods tries to resolve selected properties of a shortcut .LNK file.
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// The path of the shortcut to resolve is in |shortcut_path|. |options| is a bit
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// field composed of ShortcutProperties::IndividualProperties, to specify which
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// properties to read. It should be non-0. The resulting data are read into
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// |properties|, which must not be NULL. The function returns true if all
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// requested properties are successfully read. Otherwise some reads have failed
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// and intermediate values written to |properties| should be ignored.
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BASE_EXPORT bool ResolveShortcutProperties(const FilePath& shortcut_path,
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ShortcutProperties* properties);
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// Resolves Windows shortcut (.LNK file).
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// This is a wrapper to ResolveShortcutProperties() to handle the common use
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// case of resolving target and arguments. |target_path| and |args| are
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// optional output variables that are ignored if NULL (but at least one must be
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// non-NULL). The function returns true if all requested fields are found
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// successfully. Callers can safely use the same variable for both
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// |shortcut_path| and |target_path|.
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BASE_EXPORT bool ResolveShortcut(const FilePath& shortcut_path,
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FilePath* target_path,
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// Pins a shortcut to the Windows 7 taskbar. The shortcut file must already
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// exist and be a shortcut that points to an executable. The app id of the
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// shortcut is used to group windows and must be set correctly.
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BASE_EXPORT bool TaskbarPinShortcutLink(const wchar_t* shortcut);
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// Unpins a shortcut from the Windows 7 taskbar. The shortcut must exist and
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// already be pinned to the taskbar. The app id of the shortcut is used as the
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// identifier for the taskbar item to remove and must be set correctly.
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BASE_EXPORT bool TaskbarUnpinShortcutLink(const wchar_t* shortcut);
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#endif // BASE_WIN_SHORTCUT_H_