зеркало из https://github.com/mozilla/gecko-dev.git
279 строки
9.1 KiB
C++
279 строки
9.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Ryan Cassin (rcassin@supernova.org)
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsComposerCommands_h_
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#define nsComposerCommands_h_
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#include "nsIControllerCommand.h"
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#include "nsString.h"
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// This is a virtual base class for commands registered with the composer controller.
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// Note that such commands are instantiated once per composer, so can store state.
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// Also note that IsCommandEnabled can be called with an editorShell that may not
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// have an editor yet (because the document is loading). Most commands will want
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// to return false in this case.
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// Don't hold on to any references to the editorShell, editor, or document from
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// your command. This will cause leaks. Also, be aware that the document the
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// editor is editing can change under you (if the user Reverts the file, for
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// instance).
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class nsBaseComposerCommand : public nsIControllerCommand
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{
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public:
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nsBaseComposerCommand();
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virtual ~nsBaseComposerCommand() {}
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIControllerCommand. Declared longhand so we can make them pure virtual
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NS_IMETHOD IsCommandEnabled(const nsAReadableString & aCommandName, nsISupports *aCommandRefCon, PRBool *_retval) = 0;
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NS_IMETHOD DoCommand(const nsAReadableString & aCommandName, nsISupports *aCommandRefCon) = 0;
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protected:
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// utility methods to get/set the "state" attribute on the command node in the XUL
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nsresult GetInterfaceNode(const nsAReadableString & nodeID, nsIEditorShell* editorShell, nsIDOMElement **outNode);
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nsresult GetCommandNodeState(const nsAReadableString & aCommandName, nsIEditorShell* editorShell, nsString& outNodeState);
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nsresult SetCommandNodeState(const nsAReadableString & aCommandName, nsIEditorShell* editorShell, const nsString& inNodeState);
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// are we in HTML edit mode (not source view or plain text editing)
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PRBool EditingHTML(nsIEditorShell* inEditorShell);
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};
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#define NS_DECL_COMPOSER_COMMAND(_cmd) \
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class _cmd : public nsBaseComposerCommand \
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{ \
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public: \
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NS_DECL_NSICONTROLLERCOMMAND \
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};
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// virtual base class for commands that need to save and update Boolean state (like styles etc)
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class nsBaseStateUpdatingCommand : public nsBaseComposerCommand,
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public nsIStateUpdatingControllerCommand
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{
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public:
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nsBaseStateUpdatingCommand(const char* aTagName);
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virtual ~nsBaseStateUpdatingCommand();
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_NSICONTROLLERCOMMAND
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NS_DECL_NSISTATEUPDATINGCONTROLLERCOMMAND
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protected:
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// get the current state (on or off) for this style or block format
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, const char* aTagName, PRBool& outStateSet) = 0;
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// add/remove the style
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virtual nsresult ToggleState(nsIEditorShell *aEditorShell, const char* aTagName) = 0;
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protected:
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const char* mTagName;
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PRPackedBool mGotState; // do we know the state yet?
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PRPackedBool mState; // is this style "on" ?
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};
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// Shared class for the various style updating commands like bold, italics etc.
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// Suitable for commands whose state is either 'on' or 'off'.
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class nsStyleUpdatingCommand : public nsBaseStateUpdatingCommand
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{
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public:
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nsStyleUpdatingCommand(const char* aTagName);
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protected:
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// get the current state (on or off) for this style or block format
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, const char* aTagName, PRBool& outStateSet);
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// add/remove the style
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virtual nsresult ToggleState(nsIEditorShell *aEditorShell, const char* aTagName);
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};
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class nsListCommand : public nsBaseStateUpdatingCommand
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{
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public:
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nsListCommand(const char* aTagName);
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protected:
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// get the current state (on or off) for this style or block format
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, const char* aTagName, PRBool& outStateSet);
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// add/remove the style
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virtual nsresult ToggleState(nsIEditorShell *aEditorShell, const char* aTagName);
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};
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class nsListItemCommand : public nsBaseStateUpdatingCommand
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{
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public:
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nsListItemCommand(const char* aTagName);
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protected:
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// get the current state (on or off) for this style or block format
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, const char* aTagName, PRBool& outStateSet);
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// add/remove the style
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virtual nsresult ToggleState(nsIEditorShell *aEditorShell, const char* aTagName);
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};
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// Base class for commands whose state consists of a string (e.g. para format)
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class nsMultiStateCommand : public nsBaseComposerCommand,
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public nsIStateUpdatingControllerCommand
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{
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public:
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nsMultiStateCommand();
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virtual ~nsMultiStateCommand();
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_NSICONTROLLERCOMMAND
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NS_DECL_NSISTATEUPDATINGCONTROLLERCOMMAND
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protected:
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, nsString& outStateString, PRBool& outMixed) = 0;
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virtual nsresult SetState(nsIEditorShell *aEditorShell, nsString& newState) = 0;
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protected:
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PRPackedBool mGotState;
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nsString mStateString;
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};
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class nsParagraphStateCommand : public nsMultiStateCommand
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{
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public:
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nsParagraphStateCommand();
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protected:
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, nsString& outStateString, PRBool& outMixed);
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virtual nsresult SetState(nsIEditorShell *aEditorShell, nsString& newState);
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};
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class nsFontFaceStateCommand : public nsMultiStateCommand
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{
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public:
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nsFontFaceStateCommand();
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protected:
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, nsString& outStateString, PRBool& outMixed);
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virtual nsresult SetState(nsIEditorShell *aEditorShell, nsString& newState);
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};
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class nsFontColorStateCommand : public nsMultiStateCommand
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{
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public:
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nsFontColorStateCommand();
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protected:
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, nsString& outStateString, PRBool& outMixed);
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virtual nsresult SetState(nsIEditorShell *aEditorShell, nsString& newState);
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};
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class nsAlignCommand : public nsMultiStateCommand
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{
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public:
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nsAlignCommand();
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protected:
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, nsString& outStateString, PRBool& outMixed);
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virtual nsresult SetState(nsIEditorShell *aEditorShell, nsString& newState);
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};
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class nsBackgroundColorStateCommand : public nsMultiStateCommand
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{
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public:
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nsBackgroundColorStateCommand();
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protected:
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virtual nsresult GetCurrentState(nsIEditorShell *aEditorShell, nsString& outStateString, PRBool& outMixed);
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virtual nsresult SetState(nsIEditorShell *aEditorShell, nsString& newState);
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};
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// composer commands
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NS_DECL_COMPOSER_COMMAND(nsCloseCommand)
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NS_DECL_COMPOSER_COMMAND(nsPrintingCommands)
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// Generic commands
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// File menu
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NS_DECL_COMPOSER_COMMAND(nsNewCommands) // handles 'new' anything
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// Edit menu
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NS_DECL_COMPOSER_COMMAND(nsPasteQuotationCommand)
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// Block transformations
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NS_DECL_COMPOSER_COMMAND(nsIndentCommand)
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NS_DECL_COMPOSER_COMMAND(nsOutdentCommand)
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NS_DECL_COMPOSER_COMMAND(nsRemoveListCommand)
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NS_DECL_COMPOSER_COMMAND(nsRemoveStylesCommand)
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NS_DECL_COMPOSER_COMMAND(nsIncreaseFontSizeCommand)
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NS_DECL_COMPOSER_COMMAND(nsDecreaseFontSizeCommand)
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#endif // nsComposerCommands_h_
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