gecko-dev/editor/composer/nsComposerCommands.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsComposerCommands_h_
#define nsComposerCommands_h_
#include "nsIControllerCommand.h"
#include "nsISupportsImpl.h" // for NS_DECL_ISUPPORTS_INHERITED, etc
#include "nscore.h" // for nsresult, NS_IMETHOD
class nsIAtom;
class nsICommandParams;
class nsIEditor;
class nsISupports;
class nsString;
// This is a virtual base class for commands registered with the composer controller.
// Note that such commands are instantiated once per composer, so can store state.
// Also note that IsCommandEnabled can be called with an editor that may not
// have an editor yet (because the document is loading). Most commands will want
// to return false in this case.
// Don't hold on to any references to the editor or document from
// your command. This will cause leaks. Also, be aware that the document the
// editor is editing can change under you (if the user Reverts the file, for
// instance).
class nsBaseComposerCommand : public nsIControllerCommand
{
protected:
virtual ~nsBaseComposerCommand() {}
public:
nsBaseComposerCommand();
// nsISupports
NS_DECL_ISUPPORTS
// nsIControllerCommand. Declared longhand so we can make them pure virtual
NS_IMETHOD IsCommandEnabled(const char * aCommandName, nsISupports *aCommandRefCon, bool *_retval) override = 0;
NS_IMETHOD DoCommand(const char * aCommandName, nsISupports *aCommandRefCon) override = 0;
};
#define NS_DECL_COMPOSER_COMMAND(_cmd) \
class _cmd : public nsBaseComposerCommand \
{ \
public: \
NS_DECL_NSICONTROLLERCOMMAND \
};
// virtual base class for commands that need to save and update Boolean state (like styles etc)
class nsBaseStateUpdatingCommand : public nsBaseComposerCommand
{
public:
explicit nsBaseStateUpdatingCommand(nsIAtom* aTagName);
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSICONTROLLERCOMMAND
protected:
virtual ~nsBaseStateUpdatingCommand();
// get the current state (on or off) for this style or block format
virtual nsresult GetCurrentState(nsIEditor* aEditor, nsICommandParams* aParams) = 0;
// add/remove the style
virtual nsresult ToggleState(nsIEditor* aEditor) = 0;
protected:
nsIAtom* mTagName;
};
// Shared class for the various style updating commands like bold, italics etc.
// Suitable for commands whose state is either 'on' or 'off'.
class nsStyleUpdatingCommand : public nsBaseStateUpdatingCommand
{
public:
explicit nsStyleUpdatingCommand(nsIAtom* aTagName);
protected:
// get the current state (on or off) for this style or block format
virtual nsresult GetCurrentState(nsIEditor* aEditor, nsICommandParams* aParams);
// add/remove the style
virtual nsresult ToggleState(nsIEditor* aEditor);
};
class nsInsertTagCommand : public nsBaseComposerCommand
{
public:
explicit nsInsertTagCommand(nsIAtom* aTagName);
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSICONTROLLERCOMMAND
protected:
virtual ~nsInsertTagCommand();
nsIAtom* mTagName;
};
class nsListCommand : public nsBaseStateUpdatingCommand
{
public:
explicit nsListCommand(nsIAtom* aTagName);
protected:
// get the current state (on or off) for this style or block format
virtual nsresult GetCurrentState(nsIEditor* aEditor, nsICommandParams* aParams);
// add/remove the style
virtual nsresult ToggleState(nsIEditor* aEditor);
};
class nsListItemCommand : public nsBaseStateUpdatingCommand
{
public:
explicit nsListItemCommand(nsIAtom* aTagName);
protected:
// get the current state (on or off) for this style or block format
virtual nsresult GetCurrentState(nsIEditor* aEditor, nsICommandParams* aParams);
// add/remove the style
virtual nsresult ToggleState(nsIEditor* aEditor);
};
// Base class for commands whose state consists of a string (e.g. para format)
class nsMultiStateCommand : public nsBaseComposerCommand
{
public:
nsMultiStateCommand();
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSICONTROLLERCOMMAND
protected:
virtual ~nsMultiStateCommand();
virtual nsresult GetCurrentState(nsIEditor *aEditor, nsICommandParams* aParams) =0;
virtual nsresult SetState(nsIEditor *aEditor, nsString& newState) = 0;
};
class nsParagraphStateCommand : public nsMultiStateCommand
{
public:
nsParagraphStateCommand();
protected:
virtual nsresult GetCurrentState(nsIEditor *aEditor, nsICommandParams* aParams);
virtual nsresult SetState(nsIEditor *aEditor, nsString& newState);
};
class nsFontFaceStateCommand : public nsMultiStateCommand
{
public:
nsFontFaceStateCommand();
protected:
virtual nsresult GetCurrentState(nsIEditor *aEditor, nsICommandParams* aParams);
virtual nsresult SetState(nsIEditor *aEditor, nsString& newState);
};
class nsFontSizeStateCommand : public nsMultiStateCommand
{
public:
nsFontSizeStateCommand();
protected:
virtual nsresult GetCurrentState(nsIEditor *aEditor,
nsICommandParams* aParams);
virtual nsresult SetState(nsIEditor *aEditor, nsString& newState);
};
class nsHighlightColorStateCommand : public nsMultiStateCommand
{
public:
nsHighlightColorStateCommand();
protected:
NS_IMETHOD IsCommandEnabled(const char *aCommandName, nsISupports *aCommandRefCon, bool *_retval);
virtual nsresult GetCurrentState(nsIEditor *aEditor, nsICommandParams* aParams);
virtual nsresult SetState(nsIEditor *aEditor, nsString& newState);
};
class nsFontColorStateCommand : public nsMultiStateCommand
{
public:
nsFontColorStateCommand();
protected:
virtual nsresult GetCurrentState(nsIEditor *aEditor, nsICommandParams* aParams);
virtual nsresult SetState(nsIEditor *aEditor, nsString& newState);
};
class nsAlignCommand : public nsMultiStateCommand
{
public:
nsAlignCommand();
protected:
virtual nsresult GetCurrentState(nsIEditor *aEditor, nsICommandParams* aParams);
virtual nsresult SetState(nsIEditor *aEditor, nsString& newState);
};
class nsBackgroundColorStateCommand : public nsMultiStateCommand
{
public:
nsBackgroundColorStateCommand();
protected:
virtual nsresult GetCurrentState(nsIEditor *aEditor, nsICommandParams* aParams);
virtual nsresult SetState(nsIEditor *aEditor, nsString& newState);
};
class nsAbsolutePositioningCommand : public nsBaseStateUpdatingCommand
{
public:
nsAbsolutePositioningCommand();
protected:
NS_IMETHOD IsCommandEnabled(const char *aCommandName, nsISupports *aCommandRefCon, bool *_retval);
virtual nsresult GetCurrentState(nsIEditor* aEditor, nsICommandParams* aParams);
virtual nsresult ToggleState(nsIEditor* aEditor);
};
// composer commands
NS_DECL_COMPOSER_COMMAND(nsCloseCommand)
NS_DECL_COMPOSER_COMMAND(nsDocumentStateCommand)
NS_DECL_COMPOSER_COMMAND(nsSetDocumentStateCommand)
NS_DECL_COMPOSER_COMMAND(nsSetDocumentOptionsCommand)
//NS_DECL_COMPOSER_COMMAND(nsPrintingCommands)
NS_DECL_COMPOSER_COMMAND(nsDecreaseZIndexCommand)
NS_DECL_COMPOSER_COMMAND(nsIncreaseZIndexCommand)
// Generic commands
// File menu
NS_DECL_COMPOSER_COMMAND(nsNewCommands) // handles 'new' anything
// Edit menu
NS_DECL_COMPOSER_COMMAND(nsPasteNoFormattingCommand)
// Block transformations
NS_DECL_COMPOSER_COMMAND(nsIndentCommand)
NS_DECL_COMPOSER_COMMAND(nsOutdentCommand)
NS_DECL_COMPOSER_COMMAND(nsRemoveListCommand)
NS_DECL_COMPOSER_COMMAND(nsRemoveStylesCommand)
NS_DECL_COMPOSER_COMMAND(nsIncreaseFontSizeCommand)
NS_DECL_COMPOSER_COMMAND(nsDecreaseFontSizeCommand)
// Insert content commands
NS_DECL_COMPOSER_COMMAND(nsInsertHTMLCommand)
#endif // nsComposerCommands_h_