{

Q_OBJECT

VEdit(VFile *p_file, QWidget *p_parent = 0);

virtual ~VEdit();

virtual void beginEdit();

virtual void endEdit();

// Save buffer content to VFile.

virtual void saveFile();

virtual void setModified(bool p_modified);

bool isModified() const;

virtual void reloadFile();

virtual bool scrollToBlock(int p_blockNumber);

// User requests to insert an image.

virtual void insertImage();

// User requests to insert a link.

virtual void insertLink();

// Used for incremental search.

// User has enter the content to search, but does not enter the "find" button yet.

bool peekText(const QString &p_text, uint p_options, bool p_forward = true);

// If @p_cursor is not null, set the position of @p_cursor instead of current

// cursor.

bool findText(const QString &p_text, uint p_options, bool p_forward,

QTextCursor *p_cursor = NULL,

QTextCursor::MoveMode p_moveMode = QTextCursor::MoveAnchor);

void replaceText(const QString &p_text, uint p_options,

const QString &p_replaceText, bool p_findNext);

void replaceTextAll(const QString &p_text, uint p_options,

const QString &p_replaceText);

// Clear SearchedKeyword highlight.

void clearSearchedWordHighlight();

// Clear SearchedKeywordUnderCursor Highlight.

void clearSearchedWordUnderCursorHighlight(bool p_now = true);

// Clear IncrementalSearchedKeyword highlight.

void clearIncrementalSearchedWordHighlight(bool p_now = true);

VFile *getFile() const;

VEditConfig &getConfig();

// Request to update Vim status.

void requestUpdateVimStatus();

QVariant inputMethodQuery(Qt::InputMethodQuery p_query) const Q_DECL_OVERRIDE;

void setInputMethodEnabled(bool p_enabled);

// Insert decoration markers or decorate selected text.

void decorateText(TextDecoration p_decoration);

// LineNumberArea will call this to request paint itself.

void lineNumberAreaPaintEvent(QPaintEvent *p_event);

// Scroll the content to make @p_block visible.

// If the @p_block is too long to hold in one page, just let it occupy the

// whole page.

// Will not change current cursor.

void makeBlockVisible(const QTextBlock &p_block);

bool isBlockVisible(const QTextBlock &p_block);

// Evaluate selected text or cursor word as magic words.

void evaluateMagicWords();

signals:

// Request VEditTab to save and exit edit mode.

void saveAndRead();

// Request VEditTab to discard and exit edit mode.

void discardAndRead();

// Request VEditTab to edit current note.

void editNote();

// Request VEditTab to save this file.

void saveNote();

// Emit when m_config has been updated.

void configUpdated();

// Emit when want to show message in status bar.

void statusMessage(const QString &p_msg);

// Emit when Vim status updated.

void vimStatusUpdated(const VVim *p_vim);

// Selection changed by mouse.

void selectionChangedByMouse(bool p_hasSelection);

// Request the edit tab to close find and replace dialog.

void requestCloseFindReplaceDialog();

// Emit when all initialization is ready.

void ready();

public slots:

virtual void highlightCurrentLine();

// Jump to a title.

// @p_forward: jump forward or backward.

// @p_relativeLevel: 0 for the same level as current header;

// negative value for upper level;

// positive value is ignored.

// Returns true if the jump succeeded.

virtual bool jumpTitle(bool p_forward, int p_relativeLevel, int p_repeat);

private slots:

void labelTimerTimeout();

void highlightSelectedWord();

void handleSaveExitAct();

void handleDiscardExitAct();

void handleEditAct();

void highlightTrailingSpace();

void handleCursorPositionChanged();

// Update viewport margin to hold the line number area.

void updateLineNumberAreaMargin();

void updateLineNumberArea();

// According to the document change, try to set the block line distance height

// if affected blocks are not set.

void updateBlockLineDistanceHeight(int p_pos, int p_charsRemoved, int p_charsAdded);

QPointer<VFile> m_file;

VEditOperations *m_editOps;

VEditConfig m_config;

virtual void updateFontAndPalette();

virtual void contextMenuEvent(QContextMenuEvent *p_event) Q_DECL_OVERRIDE;

// Used to implement dragging mouse with Ctrl and left button pressed to scroll.

virtual void mousePressEvent(QMouseEvent *p_event) Q_DECL_OVERRIDE;

virtual void mouseReleaseEvent(QMouseEvent *p_event) Q_DECL_OVERRIDE;

virtual void mouseMoveEvent(QMouseEvent *p_event) Q_DECL_OVERRIDE;

virtual void resizeEvent(QResizeEvent *p_event) Q_DECL_OVERRIDE;

// Update m_config according to VConfigManager.

void updateConfig();

// Called in contextMenuEvent() to modify the context menu.

virtual void alterContextMenu(QMenu *p_menu, const QList<QAction *> &p_actions);

// Set read-only property and highlight current line.

void setReadOnlyAndHighlight(bool p_readonly);

QLabel *m_wrapLabel;

QTimer *m_labelTimer;

// doHighlightExtraSelections() will highlight these selections.

// Selections are indexed by SelectionId.

QVector<QList<QTextEdit::ExtraSelection> > m_extraSelections;

QColor m_selectedWordColor;

QColor m_searchedWordColor;

QColor m_searchedWordCursorColor;

QColor m_incrementalSearchedWordColor;

QColor m_trailingSpaceColor;

// Timer for extra selections highlight.

QTimer *m_highlightTimer;

bool m_readyToScroll;

bool m_mouseMoveScrolled;

int m_oriMouseX;

int m_oriMouseY;

// Whether enable input method.

bool m_enableInputMethod;

LineNumberArea *m_lineNumberArea;

void showWrapLabel();

// Trigger the timer to request highlight.

// If @p_now is true, stop the timer and highlight immediately.

void highlightExtraSelections(bool p_now = false);

// Do the real work to highlight extra selections.

void doHighlightExtraSelections();

// Find all the occurences of @p_text.

QList<QTextCursor> findTextAll(const QString &p_text, uint p_options);

// @p_fileter: a function to filter out highlight results.

void highlightTextAll(const QString &p_text, uint p_options,

SelectionId p_id, QTextCharFormat p_format,

void (*p_filter)(VEdit *, QList<QTextEdit::ExtraSelection> &) = NULL);

void highlightSearchedWord(const QString &p_text, uint p_options);

// Highlight @p_cursor as the searched keyword under cursor.

void highlightSearchedWordUnderCursor(const QTextCursor &p_cursor);

// Highlight @p_cursor as the incremental searched keyword.

void highlightIncrementalSearchedWord(const QTextCursor &p_cursor);

bool wordInSearchedSelection(const QString &p_text);

// Return the first visible block.

QTextBlock firstVisibleBlock();

// Return the y offset of the content.

int contentOffsetY();

// Find @p_text in the document starting from @p_start.

// Returns true if @p_text is found and set @p_cursor to indicate

// the position.

// Will NOT change current cursor.

bool findTextHelper(const QString &p_text, uint p_options,

bool p_forward, int p_start,

bool &p_wrapped, QTextCursor &p_cursor);

{

LineNumberArea(VEdit *p_editor)

: QWidget(p_editor), m_editor(p_editor),

m_document(p_editor->document()),

m_width(0), m_blockCount(-1)

{

m_digitWidth = m_editor->fontMetrics().width(QLatin1Char('1'));

m_digitHeight = m_editor->fontMetrics().height();

}

QSize sizeHint() const Q_DECL_OVERRIDE

{

return QSize(calculateWidth(), 0);

}

int calculateWidth() const;

int getDigitHeight() const

{

return m_digitHeight;

}

void paintEvent(QPaintEvent *p_event) Q_DECL_OVERRIDE

{

m_editor->lineNumberAreaPaintEvent(p_event);

}

VEdit *m_editor;

const QTextDocument *m_document;

int m_width;

int m_blockCount;

int m_digitWidth;

int m_digitHeight;