/***************************************************************************
 *   Copyright (C) 2003 by Sébastien Laoût                                 *
 *   slaout@linux62.org                                                    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef NOTEEDIT_H
#define NOTEEDIT_H

#include <QClipboard>
#include <QDialog>
#include <QLineEdit>

#include "notecontent.h"

class QGraphicsProxyWidget;
class QWidget;
class QPushButton;
class QKeyEvent;
class QFontComboBox;
class QTextCharFormat;
class QAction;

class KIconButton;
class KUrlRequester;
class KTextEdit;
class KToggleAction;
class KToolBar;
class KActionCollection;
class KComboBox;
class KColorCombo;

class FontSizeCombo;
class Note;
class RunCommandRequester;
class FocusWidgetFilter;
class BasketListViewItem;

/** The base class for every note editor.
  * Scenario:
  *  The Basket class calls NoteEditor::editNoteContent() with the NoteContent to edit.
  *  This method create the good child NoteEditor depending
  *  on the note content type and return it to the Basket.
  *  This custom NoteEditor have two choices regarding what to do in its constructor:
  *   - Display a dialog and then call cancel() if the user canceled the dialog;
  *   - Create an inline editor and call setInlineEditor() with that editor as parameter.
  *     When the user exit the edition, validate() is called by the Basket.
  *     You should then call setEmpty() is the user cleared the content.
  *  The custom editor SHOULD call the NoteEditor constructor.
  *  If the user cleared the content OR if the user canceled the dialog whereas he/she
  *  JUST ADDED the note, then the note will be deleted by the Basket.
  */
class NoteEditor : public QObject
{
    Q_OBJECT
public:
    NoteEditor(NoteContent *noteContent);
    virtual ~NoteEditor();

    bool        isEmpty()  {
        return m_isEmpty;
    }
    bool        canceled() {
        return m_canceled;
    }
    bool        isInline() {
        return m_widget != 0;
    }
    QGraphicsProxyWidget*    graphicsWidget()   {
        return m_widget;
    }
    KTextEdit*  textEdit() {
        return m_textEdit;
    }
    QLineEdit*  lineEdit() {
        return m_lineEdit;
    }

    void setCursorTo(const QPointF &pos);
    void connectActions(BasketScene *scene);
    void startSelection(const QPointF &pos);
    void updateSelection(const QPointF &pos);
    void endSelection(const QPointF &pos);    
    void paste(const QPointF &pos, QClipboard::Mode mode);
    
private:
    bool         m_isEmpty;
    bool         m_canceled;
    QGraphicsProxyWidget     *m_widget;
    KTextEdit   *m_textEdit;
    QLineEdit   *m_lineEdit;
    NoteContent *m_noteContent;

public:
    NoteContent* noteContent() {
        return m_noteContent;
    }
    Note*        note();
protected:
    void setEmpty() {
        m_isEmpty  = true;
    }
    void cancel()   {
        m_canceled = true;
    }
    void setInlineEditor(QWidget *inlineEditor);
public:
    virtual void validate() {}
    virtual void autoSave(bool /*toFileToo*/) {} // Same as validate(), but does not precede editor close and is triggered either while the editor widget changed size or after 3 seconds of inactivity.

signals:
    void askValidation();
    void mouseEnteredEditorWidget();

public:
    static NoteEditor* editNoteContent(NoteContent *noteContent, QWidget *parent);
};

class TextEditor : public NoteEditor
{
    Q_OBJECT
public:
    TextEditor(TextContent *textContent, QWidget *parent);
    ~TextEditor();
    void validate();
    void autoSave(bool toFileToo);
protected:
    TextContent *m_textContent;
};

class HtmlEditor : public NoteEditor
{
    Q_OBJECT
public:
    HtmlEditor(HtmlContent *htmlContent, QWidget *parent);
    ~HtmlEditor();
    void validate();
    void autoSave(bool toFileToo);
protected:
    HtmlContent *m_htmlContent;
public slots:
    void cursorPositionChanged();
    void editTextChanged();
    void charFormatChanged(const QTextCharFormat &format);
protected slots:
    void setBold(bool isChecked);
    void setLeft();
    void setCentered();
    void setRight();
    void setBlock();
    void onFontSelectionChanged(const QFont& font); //!< When a font is selected from combo box
};

class ImageEditor : public NoteEditor
{
    Q_OBJECT
public:
    ImageEditor(ImageContent *imageContent, QWidget *parent);
};

class AnimationEditor : public NoteEditor
{
    Q_OBJECT
public:
    AnimationEditor(AnimationContent *animationContent, QWidget *parent);
};

class FileEditor : public NoteEditor
{
    Q_OBJECT
public:
    FileEditor(FileContent *fileContent, QWidget *parent);
    ~FileEditor();
    void validate();
    void autoSave(bool toFileToo);
protected:
    FileContent *m_fileContent;
};

class LinkEditor : public NoteEditor
{
    Q_OBJECT
public:
    LinkEditor(LinkContent *linkContent, QWidget *parent);
};

class CrossReferenceEditor : public NoteEditor
{
    Q_OBJECT
public:
    CrossReferenceEditor(CrossReferenceContent *crossReferenceContent, QWidget *parent);
};

class LauncherEditor : public NoteEditor
{
    Q_OBJECT
public:
    LauncherEditor(LauncherContent *launcherContent, QWidget *parent);
};

class ColorEditor : public NoteEditor
{
    Q_OBJECT
public:
    ColorEditor(ColorContent *colorContent, QWidget *parent);
};

class UnknownEditor : public NoteEditor
{
    Q_OBJECT
public:
    UnknownEditor(UnknownContent *unknownContent, QWidget *parent);
};


/** The dialog to edit Link Note content.
  * @author Sébastien Laoût
  */
class LinkEditDialog : public QDialog
{
    Q_OBJECT
public:
    explicit LinkEditDialog(LinkContent *contentNote, QWidget *parent = 0);
    ~LinkEditDialog();
    void ensurePolished();

protected slots:
    void slotOk();
    void urlChanged(const QString&);
    void doNotAutoTitle(const QString&);
    void doNotAutoIcon(QString);
    void guessTitle();
    void guessIcon();
private:
    LinkContent   *m_noteContent;
    bool           m_isAutoModified;
    KUrlRequester *m_url;
    QLineEdit     *m_title;
    KIconButton   *m_icon;
    QPushButton   *m_autoTitle;
    QPushButton   *m_autoIcon;
};

/** The dialog to edit cross reference content.
  * @author Brian C. Milco
  */
class CrossReferenceEditDialog : public QDialog
{
    Q_OBJECT
public:
    explicit CrossReferenceEditDialog(CrossReferenceContent *contentNote, QWidget *parent = 0);
    ~CrossReferenceEditDialog();

protected slots:
    void slotOk();
    void urlChanged(const int index);
protected:
    void generateBasketList(KComboBox *targetList, BasketListViewItem *item = 0, int indent = 0);
private:
    CrossReferenceContent   *m_noteContent;
    KComboBox     *m_targetBasket;
};

/** The dialog to edit Launcher Note content.
  * @author Sébastien Laoût
  */
class LauncherEditDialog : public QDialog
{
    Q_OBJECT
public:
    explicit LauncherEditDialog(LauncherContent *contentNote, QWidget *parent = 0);
    ~LauncherEditDialog();
    void ensurePolished();
protected slots:
    void slotOk();
    void guessIcon();
private:
    LauncherContent     *m_noteContent;
    RunCommandRequester *m_command;
    QLineEdit           *m_name;
    KIconButton         *m_icon;
};

/** This class manage toolbars for the inline editors.
  * The toolbars should be created once at the application startup,
  * then KXMLGUI can manage them and save theire state and position...
  * @author Sébastien Laoût
  */
class InlineEditors : public QObject
{
    Q_OBJECT
public:
    InlineEditors();
    ~InlineEditors();
    void initToolBars(KActionCollection *ac);
    static InlineEditors* instance();

public:
    // Rich Text ToolBar:
    KToolBar* richTextToolBar();
    void enableRichTextToolBar();
    void disableRichTextToolBar();
    QPalette palette() const;
    QFontComboBox     *richTextFont;
    FontSizeCombo     *richTextFontSize;
    KColorCombo       *richTextColor;
    KToggleAction     *richTextBold;
    KToggleAction     *richTextItalic;
    KToggleAction     *richTextUnderline;
//  KToggleAction     *richTextSuper;
//  KToggleAction     *richTextSub;
    KToggleAction     *richTextLeft;
    KToggleAction     *richTextCenter;
    KToggleAction     *richTextRight;
    KToggleAction     *richTextJustified;
    QAction *richTextUndo;
    QAction *richTextRedo;
    FocusWidgetFilter *focusWidgetFilter;
};

#endif // NOTEEDIT_H
