зеркало из https://github.com/mozilla/gecko-dev.git
218 строки
8.3 KiB
C++
218 строки
8.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=4 sw=2 sts=2 et: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef __nsmimeinfoimpl_h___
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#define __nsmimeinfoimpl_h___
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#include "nsIMIMEInfo.h"
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#include "nsAtom.h"
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#include "nsString.h"
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#include "nsTArray.h"
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#include "nsIMutableArray.h"
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#include "nsIFile.h"
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#include "nsCOMPtr.h"
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#include "nsIURI.h"
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#include "nsIProcess.h"
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#include "mozilla/dom/BrowsingContext.h"
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/**
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* UTF8 moz-icon URI string for the default handler application's icon, if
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* available.
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*/
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#define PROPERTY_DEFAULT_APP_ICON_URL "defaultApplicationIconURL"
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/**
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* UTF8 moz-icon URI string for the user's preferred handler application's
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* icon, if available.
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*/
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#define PROPERTY_CUSTOM_APP_ICON_URL "customApplicationIconURL"
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/**
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* Basic implementation of nsIMIMEInfo. Incomplete - it is meant to be
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* subclassed, and GetHasDefaultHandler as well as LaunchDefaultWithFile need to
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* be implemented.
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*/
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class nsMIMEInfoBase : public nsIMIMEInfo {
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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// I'd use NS_DECL_NSIMIMEINFO, but I don't want GetHasDefaultHandler
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NS_IMETHOD GetFileExtensions(nsIUTF8StringEnumerator** _retval) override;
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NS_IMETHOD SetFileExtensions(const nsACString& aExtensions) override;
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NS_IMETHOD ExtensionExists(const nsACString& aExtension,
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bool* _retval) override;
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NS_IMETHOD AppendExtension(const nsACString& aExtension) override;
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NS_IMETHOD GetPrimaryExtension(nsACString& aPrimaryExtension) override;
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NS_IMETHOD SetPrimaryExtension(const nsACString& aPrimaryExtension) override;
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NS_IMETHOD GetType(nsACString& aType) override;
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NS_IMETHOD GetMIMEType(nsACString& aMIMEType) override;
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NS_IMETHOD GetDescription(nsAString& aDescription) override;
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NS_IMETHOD SetDescription(const nsAString& aDescription) override;
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NS_IMETHOD Equals(nsIMIMEInfo* aMIMEInfo, bool* _retval) override;
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NS_IMETHOD GetPreferredApplicationHandler(
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nsIHandlerApp** aPreferredAppHandler) override;
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NS_IMETHOD SetPreferredApplicationHandler(
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nsIHandlerApp* aPreferredAppHandler) override;
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NS_IMETHOD GetPossibleApplicationHandlers(
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nsIMutableArray** aPossibleAppHandlers) override;
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NS_IMETHOD GetDefaultDescription(nsAString& aDefaultDescription) override;
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NS_IMETHOD LaunchWithFile(nsIFile* aFile) override;
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NS_IMETHOD LaunchWithURI(
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nsIURI* aURI, mozilla::dom::BrowsingContext* aBrowsingContext) override;
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NS_IMETHOD GetPreferredAction(nsHandlerInfoAction* aPreferredAction) override;
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NS_IMETHOD SetPreferredAction(nsHandlerInfoAction aPreferredAction) override;
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NS_IMETHOD GetAlwaysAskBeforeHandling(
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bool* aAlwaysAskBeforeHandling) override;
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NS_IMETHOD SetAlwaysAskBeforeHandling(bool aAlwaysAskBeforeHandling) override;
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NS_IMETHOD GetPossibleLocalHandlers(nsIArray** _retval) override;
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enum HandlerClass { eMIMEInfo, eProtocolInfo };
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// nsMIMEInfoBase methods
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explicit nsMIMEInfoBase(const char* aMIMEType = "");
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explicit nsMIMEInfoBase(const nsACString& aMIMEType);
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nsMIMEInfoBase(const nsACString& aType, HandlerClass aClass);
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void SetMIMEType(const nsACString& aMIMEType) { mSchemeOrType = aMIMEType; }
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void SetDefaultDescription(const nsString& aDesc) {
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mDefaultAppDescription = aDesc;
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}
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/**
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* Copies basic data of this MIME Info Implementation to the given other
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* MIME Info. The data consists of the MIME Type, the (default) description,
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* the MacOS type and creator, and the extension list (this object's
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* extension list will replace aOther's list, not append to it). This
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* function also ensures that aOther's primary extension will be the same as
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* the one of this object.
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*/
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void CopyBasicDataTo(nsMIMEInfoBase* aOther);
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/**
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* Return whether this MIMEInfo has any extensions
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*/
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bool HasExtensions() const { return mExtensions.Length() != 0; }
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static already_AddRefed<nsIFile> GetCanonicalExecutable(nsIFile* aFile);
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protected:
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virtual ~nsMIMEInfoBase(); // must be virtual, as the the base class's
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// Release should call the subclass's destructor
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/**
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* Launch the default application for the given file.
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* For even more control over the launching, override launchWithFile.
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* Also see the comment about nsIMIMEInfo in general, above.
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*
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* @param aFile The file that should be opened
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*/
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virtual nsresult LaunchDefaultWithFile(nsIFile* aFile) = 0;
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/**
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* Loads the URI with the OS default app.
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*
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* @param aURI The URI to pass off to the OS.
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*/
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virtual nsresult LoadUriInternal(nsIURI* aURI) = 0;
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bool AutomationOnlyCheckIfLaunchStubbed(nsIFile* aFile);
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static already_AddRefed<nsIProcess> InitProcess(nsIFile* aApp,
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nsresult* aResult);
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/**
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* This method can be used to launch the file or URI with a single
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* argument (typically either a file path or a URI spec). This is
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* meant as a helper method for implementations of
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* LaunchWithURI/LaunchDefaultWithFile.
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*
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* @param aApp The application to launch (may not be null)
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* @param aArg The argument to pass on the command line
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*/
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static nsresult LaunchWithIProcess(nsIFile* aApp, const nsCString& aArg);
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static nsresult LaunchWithIProcess(nsIFile* aApp, const nsString& aArg);
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static nsresult LaunchWithIProcess(nsIFile* aApp, const int aArgc,
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const char16_t** aArgv);
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/**
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* Given a file: nsIURI, return the associated nsIFile
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*
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* @param aURI the file: URI in question
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* @param aFile the associated nsIFile (out param)
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*/
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static nsresult GetLocalFileFromURI(nsIURI* aURI, nsIFile** aFile);
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/**
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* Internal helper to avoid adding duplicates.
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*/
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void AddUniqueExtension(const nsACString& aExtension);
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// member variables
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nsTArray<nsCString>
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mExtensions; ///< array of file extensions associated w/ this MIME obj
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nsString mDescription; ///< human readable description
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nsCString mSchemeOrType;
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HandlerClass mClass;
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nsCOMPtr<nsIHandlerApp> mPreferredApplication;
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nsCOMPtr<nsIMutableArray> mPossibleApplications;
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nsHandlerInfoAction
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mPreferredAction; ///< preferred action to associate with this type
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nsString mPreferredAppDescription;
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nsString mDefaultAppDescription;
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bool mAlwaysAskBeforeHandling;
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};
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/**
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* This is a complete implementation of nsIMIMEInfo, and contains all necessary
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* methods. However, depending on your platform you may want to use a different
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* way of launching applications. This class stores the default application in a
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* member variable and provides a function for setting it. For local
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* applications, launching is done using nsIProcess, native path of the file to
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* open as first argument.
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*/
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class nsMIMEInfoImpl : public nsMIMEInfoBase {
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public:
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explicit nsMIMEInfoImpl(const char* aMIMEType = "")
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: nsMIMEInfoBase(aMIMEType) {}
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explicit nsMIMEInfoImpl(const nsACString& aMIMEType)
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: nsMIMEInfoBase(aMIMEType) {}
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nsMIMEInfoImpl(const nsACString& aType, HandlerClass aClass)
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: nsMIMEInfoBase(aType, aClass) {}
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virtual ~nsMIMEInfoImpl() {}
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// nsIMIMEInfo methods
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NS_IMETHOD GetHasDefaultHandler(bool* _retval) override;
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NS_IMETHOD GetDefaultDescription(nsAString& aDefaultDescription) override;
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NS_IMETHOD IsCurrentAppOSDefault(bool* _retval) override;
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// additional methods
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/**
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* Sets the default application. Supposed to be only called by the OS Helper
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* App Services; the default application is immutable after it is first set.
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*/
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void SetDefaultApplication(nsIFile* aApp) {
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if (!mDefaultApplication) mDefaultApplication = aApp;
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}
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protected:
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// nsMIMEInfoBase methods
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/**
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* The base class implementation is to use LaunchWithIProcess in combination
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* with mDefaultApplication. Subclasses can override that behaviour.
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*/
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virtual nsresult LaunchDefaultWithFile(nsIFile* aFile) override;
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/**
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* Loads the URI with the OS default app. This should be overridden by each
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* OS's implementation.
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*/
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virtual nsresult LoadUriInternal(nsIURI* aURI) override = 0;
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nsCOMPtr<nsIFile>
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mDefaultApplication; ///< default application associated with this type.
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};
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#endif //__nsmimeinfoimpl_h___
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