/*

* Copyright (c) 1997-1999 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#if !defined(__EIKRTED_H__)

#define __EIKRTED_H__

#if !defined(__EIKGTED_H__)

#include <eikgted.h>

#endif

#if !defined(__APPARC_H__)

#include <apparc.h>

#endif

#if !defined(__TXTMRTSR_H__)

#include <txtmrtsr.h>

#endif

#if !defined(__GDI_H__)

#include <gdi.h>

#endif

class CRichText;

class TResourceReader;

class TPictureHeader;

class CEikRubberBand;

class CBufStore;

class CStreamStore;

class CApaDoor;

class CEikParserManager;

class MEikRichTextEditorParserObserver;

class MParser;

/**

 * Rich text editor.

 * 

 * This is an edit window that supports rich text, including embedded objects

 * represented either by icons or glass doors. 

 *

 * @since Symbian 5.0

 */

class CEikRichTextEditor : public CEikGlobalTextEditor, 

                           public MApaEmbeddedDocObserver, 

                           public MRichTextStoreResolver, 

                           public MPictureFactory

	{

public:

    /** 

     * Identifies how an embedded object should be represented.

     *

     * One of these values is specified when the object is inserted.

     */ 

	enum TObjectFormat

		{

        /** The object is always represented by an icon */

		EAlwaysIconic,

        /** 

         * The object is represented by a glass door, if possible, or by icon,

         * if not.

         */

		EGlassIfPossible

		};

    /** 

     * Edit window attribute flags specific to the rich text editor.

     *

     * These may be specified during construction in addition to the values 

     * contained in the @c TFlags enum in class @c CEikEdwin.

     */

	enum // user flag

		{

        /** 

         * All embedded objects are represented by icon rather than 

         * glass doors. 

         */

        EShowAllPicturesAsIconic	=0x00100000,

        /**

         * The editor has no text parsers.

         *

         * Text parsers are used to recognise and tag special text strings,

         * e.g. URLs.

         */

        ENoTextParsers				=0x00200000,

        /**

         * When pasting text into the editor, the text is

         * stripped of all formatting.

         *

         * @since 3.2

         */

        EPasteAsPlainText           =0x00400000

		};

public:

    /**

     * C++ default constructor.

     */

    IMPORT_C CEikRichTextEditor();

    /**

     * C++ constructor.

     * 

     * @param aBorder Border for the rich text editor. 

     */ 

	IMPORT_C CEikRichTextEditor(const TGulBorder& aBorder);

    /**

     * Destructor.

     */ 

    IMPORT_C ~CEikRichTextEditor();

    /** 

     * By default Symbian 2nd phase constructor is private.

     *

     * Completes construction of the rich text editor.

     *

     * The editor's paragraph and character formatting are set to default

     * values, unless the @c CEikEdwin::EUserSuppliedText flag is specified 

     * in @c aEdwinFlags.

     *

     * @param aParent If not NULL, the editor's parent control. 

     *        If NULL, the editor has no parent.

     * @param aNumberOfLines The number of lines visible in the editor. 

     *        This controls the editor's height.

     * @param aTextLimit The maximum number of characters that can be entered

     *        into the editor.

     * @param aEdwinFlags Edit window attribute flags. 

     *        See @c CEikEdwin::TFlags().

     * @param aFontControlFlags = EGulFontControlAll Flags that specify which 

     *        font-related controls should not appear in font dialogs launched 

     *        from the edit window. For instance @c EGulFontControlBold removes 

     *        the bold checkbox control. The default shows all. For possible 

     *        values, see @c gulftflg.hrh.

     * @param aFontNameFlags = EGulNoSymbolFonts The font flags. These control 

     *        whether symbol and monospace fonts should be displayed in font

     *        dialogs launched from the edit window. For possible values, see 

     *        @c gulftflg.hrh.

     */

    IMPORT_C void ConstructL(const CCoeControl* aParent,

                             TInt aNumberOfLines,

                             TInt aTextLimit,

                             TInt aEdwinFlags,

                             TInt aFontControlFlags=EGulFontControlAll,

                             TInt aFontNameFlags=EGulNoSymbolFonts);

    /** 

     * Gets a pointer to the rich text object owned by the editor.

     *

     * @return Pointer to the rich text object.

     */

    IMPORT_C CRichText* RichText() const;

    /** 

     * Launches an insert object dialog (@c CEikInsertObjectDialog),

     * and inserts a default document of the application type selected 

     * by the user.

     * 

     * The object can be displayed either as a glass door, if supported, 

     * or as an icon, and the inserted object is opened for editing.

     *

     * Displays an info message and leaves if the editor's text limit 

     * has been reached.

     * 

     * @param aFormat Specifies whether the embedded document should be 

     *        displayed as an icon or as a glass door.

     */ 

    IMPORT_C void InsertObjectL(TObjectFormat aFormat);

    /** 

     * Launches an insert object dialog (@c CEikInsertObjectDialog),

     * and inserts a default document of the application type selected 

     * by the user.

     * 

     * The object is displayed as a glass door rather than as an icon, 

     * if supported and the inserted object is opened for editing.

     *

     * Displays an info message and leaves if the editor's text limit 

     * has been reached.

     *

     * Default is @c EGlassIfPossible.

     */

    IMPORT_C void InsertObjectL(); // defaults to EGlassIfPossible

    /** 

     * Creates and inserts a default document of the specified 

     * application type.

     * 

     * @c CApaProcess::AddNewDocumentL() is used to create the document.

     * 

     * The object can be displayed either as a glass door, if supported, 

     * or as an icon, and the inserted object is opened for editing.

     *

     * Displays an info message and leaves if no suitable application DLL 

     * can be found, or if the editor's text limit has been reached.

     *

     * @since Symbian 7.0

     * @param aAppDllName Filename of the application DLL.

     * @param aAppDllUid UID of the application. The default is @c KNullUid.

     * @param aFormat Specifies whether the embedded document should be 

     *        displayed as an icon or as a glass door.

     */

    IMPORT_C void InsertObjectL(const TDesC& aAppDllName,

                                TUid aAppDllUid,

                                TObjectFormat aFormat);

    /** 

     * Creates and inserts a new embedded object of the specified type.

     *

     * First, an attempt is made to find an extended picture factory that

     * supports the insertion of pictures of the specified type. If one is

     * not found, the function leaves; if one is found, the picture is inserted

     * at the cursor position.

     *

     * Displays an info message and leaves if the editor's text limit has

     * been reached.

     * 

     * @since Symbian 6.1

     * @param aPictureType The picture type.

     * @param aData The base address of the data. 

     * @leave KErrNotSupported No picture factory which supports the specified 

     *                         type is available in the control's @c Uikon 

     *                         environment.

     */

    IMPORT_C void InsertObjectL(TUid aPictureType,

                                CBase* aData);

    /** 

     * Re-edits the embedded object at the cursor position.

     *

     * If there is no embedded object at the cursor position, or if there is a 

     * selection, an info message is displayed.

     *

     * If there is a valid object at the cursor position, it is opened for 

     * editing (or for viewing if the editor is read-only).

     */

    IMPORT_C void ReEditObjectL();

    /** 

     * Gets the document position and checks whether there is an embedded 

     * object at the cursor position.

     *

     * If there is no embedded object at the cursor position, or if there 

     * is a selection, an info message is displayed.

     *

     * @return The document position of the embedded object, or 

     *         @c KErrNotFound if there is no embedded object at the cursor 

     *         position, or if there is a selection

     */

    IMPORT_C TInt ObjectCursorPos() const;

    /**

     * Tests whether there is an embedded object at the cursor position.

     *

     * If there is one, it is opened for editing (or for viewing if the editor

     * is read-only).

     *

     * @return @c ETrue if there is an embedded object at the cursor 

     *         position and it could be opened. @c EFalse if there is no 

     *         embedded object at the cursor position, or if the object has

     *         a NULL UID.

     */ 

    IMPORT_C TBool CheckForObjectL();

    /**

     * Launches a format object dialog (@c CEikFormatObjectDialog) if there 

     * is an embedded object at the cursor position, and the object supports 

     * being displayed as a glass door.

     *

     * If the object does not support being displayed as a glass door, an 

     * object information dialog (@c CEikObjectInfoDialog) is launched instead.

     *

     * If the embedded object's associated application cannot be found, an 

     * info message is displayed and the function leaves.

     *

     * The function has no effect if there is no embedded object at the cursor

     * position.

     */ 

    IMPORT_C void EditPictureFormatL();

    /**

     * Handles a change to the format of an embedded object, by updating the 

     * view, the scroll bars and reporting the event to its observers.

     *

     * There is no need to call this function after calling 

     * @c EditPictureFormatL().

     */

    IMPORT_C void PictureFormatChangedL();

    /**

     * Gets a pointer to the embedded object located at the specified position. 

     *

     * If the object is not in memory, the function loads it.  

     *

     * If the object's associated application cannot be found, an info message

     * is displayed and the function leaves.

     *

     * @param aDoor On return, the embedded document's wrapper object (icon or 

     *        glass door).

     * @param aDoc On return, the embedded document.

     * @param aDocPos The document position in the editor at which the embedded 

     *        object is located.

     */

    IMPORT_C void GetEmbeddedAppL(CApaDoor*& aDoor,

                                  CApaDocument*& aDoc,

                                  TInt aDocPos);

    /** 

     * Changes all embedded objects displayed as glass doors into temporarily 

     * iconic.

     * 

     * The function operates throughout the editor.

     *

     * Only needed when pictures are temporarily iconic. 

     *

     * Has no effect if there are no embedded objects in the editor or if the 

     * @c EShowAllPicturesAsIconic attribute flag was set during construction.

     */

    IMPORT_C void UpdatePictureFormatL(); 

    /**

     * Changes all embedded objects displayed as glass doors into temporarily 

     * iconic.

     * 

     * The function operates over a specified range of characters.

     *

     * Has no effect if there are no embedded objects in the editor or if the 

     * @c EShowAllPicturesAsIconic attribute flag was set during construction.

     *

     * Only needed when pictures are temporarily iconic.

     *

     * @param aStartPos The start position.

     * @param aLength The number of characters, beginning at @c aStartPos over 

     *        which the function operates.

     */

    IMPORT_C void UpdatePictureFormatL(TInt aStartPos,TInt aLength); 

    /** 

     * Changes the size of the icons used to represent embedded objects.

     *

     * Any existing iconic doors can be updated to the new size by calling 

     * @c UpdatePictureSizeL().

     *

     * @param aSize The new iconic door size in twips.

     */ 

    IMPORT_C void SetDefaultIconicDoorSize(const TSize& aSize); 

    /** 

     * Gets the size of iconic doors.

     * 

     * @return The size of iconic doors. 

     */ 

    IMPORT_C const TSize& DefaultIconicDoorSize() const;

    /** 

     * Changes the size of all icons representing embedded objects to the 

     * default iconic door size.

     *

     * Also updates any objects currently displayed as glass doors, so that

     * if displayed as icons, they will use the correct size. 

     *

     * The function operates throughout the editor.

     */

    IMPORT_C void UpdatePictureSizeL();

    /**

     * Changes the size of all icons representing embedded objects to the 

     * default iconic door size.

     *

     * Also updates any objects currently displayed as glass doors, so that 

     * if displayed as icons, they will use the correct size. 

     *

     * The function operates over a specified range of characters.

     *

     * @param aStartPos The start position.

     * @param aLength The number of characters, beginning at @c aStartPos over

     *        which the function operates.

     */

    IMPORT_C void UpdatePictureSizeL(TInt aStartPos,TInt aLength);

    /** 

     * Sets a parser observer.

     *

     * If the @c CEikEdwin::ENoTextParsers attribute flag was specified on 

     * construction, this function has no effect.

     *

     * Its @c HandleCursorOverParserL() function is called when the cursor is 

     * positioned over text that has been tagged by the parser, for instance 

     * a URL.

     *

     * @param aObserver The parser observer.

     */ 

    IMPORT_C void SetParserObserver(

                    MEikRichTextEditorParserObserver* aObserver);

    /**

     * Activate/Disable phone number grouping.

     *

     * @param aEnable @c ETrue if phone number grouping is to be activated,

     *        @c EFalse otherwise.

     */ 

    IMPORT_C void SetPhoneNumberGrouping( TBool aEnable );

public: // from CCoeControl

    /** 

     * From @c CCoeControl.

     * 

     * Handles key events.

     *

     * Has no effect (apart from returning @c EKeyWasConsumed) if the 

     * @c CEikEdwin::EDisplayOnly attribute flag was specified on construction.

     *

     * Handles rich text-specific hot keys, for instance to insert an object; 

     * otherwise calls @c CEikGlobalTextEditor::OfferKeyEventL(). 

     *

     * @param aKeyEvent The key event.

     * @param aType The type of the event. The editor only consumes events of 

     *        type @c EEventKey.

     * @return Indicates whether or not the editor consumed the 

     *         key event.

     */

    IMPORT_C TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);

    /**

     * From @c CCoeControl.

     * 

     * Handles pointer events inside the editor.

     *

     * Has no effect if the @c CEikEdwin::EDisplayOnly attribute flag was 

     * specified on construction.

     * 

     * @param aPointerEvent The pointer event to be handled.

     */

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

    /** 

     * From @c CCoeControl.

     *

     * Completes the construction of the rich text editor from a resource file.

     *

     * The editor's paragraph and character formatting are set to default 

     * values, unless the @c CEikEdwin::EUserSuppliedText flag is specified in 

     * the resource.

     *

     * @param aReader A resource reader positioned for reading from an 

     *        RTXTED resource.

     */

    IMPORT_C void ConstructFromResourceL(TResourceReader& aReader);

    /** 

     * From @c CCoeControl. 

     * 

     * Activates the editor so that it is ready for use.

     *

     * For instance, the text view is created, the editor is set to observe its

     * rich text object, the editor's parser manager is set up, which handles

     * the changes that occur when the cursor is moved over tagged text

     * (for instance a URL), and all embedded objects are set to be displayed

     * as icons, of the default size.

     */ 

    IMPORT_C void ActivateL();

private:

    /**

    * From CAknControl.

    */

    IMPORT_C void* ExtensionInterface( TUid aInterface );

public: // from CEikEdwin

    /** 

     * From @c CEikEdwin.

     * 

     * Copies the contents of one text object into another.

     *

     * @param[in] aInText The rich text object to copy.

     * @param[out] aOutText On return, contains a copy of @c aInText.

     * @panic 26 In debug mode, if either @c aInText or @c aOutText is @c NULL.

     */ 

    IMPORT_C void CopyDocumentContentL(CGlobalText& aInText,CGlobalText& aOutText);

protected:

    /** 

     * Internal flags used for indicating operations. 

     */

    enum // internal flags

		{

        /** Crop from left. */ 

        ECropFromLeft			=0x00010000,

        /** Crop from right. */

        ECropFromRight			=0x00020000,

        /** Crop from top. */

        ECropFromTop			=0x00040000,

        /** Crop from bottom. */ 

        ECropFromBottom			=0x00080000,

        /** Object is being re-edited. */

        EReEditingObject		=0x00100000

		};

protected: // from CCoeControl

    /** 

     * From @c CCoeControl.