basetexteditor.h 17.8 KB
Newer Older
1
/**************************************************************************
con's avatar
con committed
2 3 4
**
** This file is part of Qt Creator
**
5
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
con's avatar
con committed
6 7 8
**
** Contact:  Qt Software Information (qt-info@nokia.com)
**
9
** Commercial Usage
10
**
11 12 13 14
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
15
**
16
** GNU Lesser General Public License Usage
17
**
18 19 20 21 22 23
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24
**
25 26
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
con's avatar
con committed
27
**
28
**************************************************************************/
hjk's avatar
hjk committed
29

con's avatar
con committed
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67
#ifndef BASETEXTEDITOR_H
#define BASETEXTEDITOR_H

#include "displaysettings.h"
#include "tabsettings.h"
#include "itexteditable.h"

#include <QtGui/QPlainTextEdit>
#include <QtGui/QLabel>
#include <QtGui/QKeyEvent>

QT_BEGIN_NAMESPACE
class QLabel;
class QToolBar;
QT_END_NAMESPACE

namespace Core {
    namespace Utils {
        class LineColumnLabel;
    }
}

namespace TextEditor {

namespace Internal {
    class BaseTextEditorPrivate;
}

class ITextMark;
class ITextMarkable;

class TextEditorActionHandler;
class BaseTextDocument;
class FontSettings;
struct StorageSettings;

struct Parenthesis;
typedef QVector<Parenthesis> Parentheses;
68

con's avatar
con committed
69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84
struct TEXTEDITOR_EXPORT Parenthesis
{
    enum Type { Opened, Closed };

    inline Parenthesis() : type(Opened), pos(-1) {}
    inline Parenthesis(Type t, QChar c, int position)
        : type(t), chr(c), pos(position) {}
    Type type;
    QChar chr;
    int pos;
    static int collapseAtPos(const Parentheses &parentheses, QChar *character = 0);
    static int closeCollapseAtPos(const Parentheses &parentheses);
    static bool hasClosingCollapse(const Parentheses &parentheses);
};


85 86
class TEXTEDITOR_EXPORT TextBlockUserData : public QTextBlockUserData
{
con's avatar
con committed
87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135
public:

    enum CollapseMode { NoCollapse , CollapseThis, CollapseAfter };
    enum ClosingCollapseMode { NoClosingCollapse, ClosingCollapse, ClosingCollapseAtEnd };

    inline TextBlockUserData()
        : m_collapseIncludesClosure(false),
          m_collapseMode(NoCollapse),
          m_closingCollapseMode(NoClosingCollapse),
          m_collapsed(false),
          m_ifdefedOut(false) {}
    ~TextBlockUserData();

    inline TextMarks marks() const { return m_marks; }
    inline void addMark(ITextMark *mark) { m_marks += mark; }
    inline bool removeMark(ITextMark *mark) { return m_marks.removeAll(mark); }
    inline bool hasMark(ITextMark *mark) const { return m_marks.contains(mark); }
    inline void clearMarks() { m_marks.clear(); }
    inline void documentClosing() { Q_FOREACH(ITextMark *tm, m_marks) { tm->documentClosing(); } m_marks.clear();}

    inline CollapseMode collapseMode() const { return (CollapseMode)m_collapseMode; }
    inline void setCollapseMode(CollapseMode c) { m_collapseMode = c; }

    inline void setClosingCollapseMode(ClosingCollapseMode c) { m_closingCollapseMode = c; }
    inline ClosingCollapseMode closingCollapseMode() const { return (ClosingCollapseMode) m_closingCollapseMode; }

    inline bool hasClosingCollapse() const { return closingCollapseMode() != NoClosingCollapse; }
    inline bool hasClosingCollapseAtEnd() const { return closingCollapseMode() == ClosingCollapseAtEnd; }
    inline bool hasClosingCollapseInside() const { return closingCollapseMode() == ClosingCollapse; }

    inline void setCollapsed(bool b) { m_collapsed = b; }
    inline bool collapsed() const { return m_collapsed; }

    inline void setCollapseIncludesClosure(bool b) { m_collapseIncludesClosure = b; }
    inline bool collapseIncludesClosure() const { return m_collapseIncludesClosure; }

    inline void setParentheses(const Parentheses &parentheses) { m_parentheses = parentheses; }
    inline void clearParentheses() { m_parentheses.clear(); }
    inline const Parentheses &parentheses() const { return m_parentheses; }
    inline bool hasParentheses() const { return !m_parentheses.isEmpty(); }

    inline bool setIfdefedOut() { bool result = m_ifdefedOut; m_ifdefedOut = true; return !result; }
    inline bool clearIfdefedOut() { bool result = m_ifdefedOut; m_ifdefedOut = false; return result;}
    inline bool ifdefedOut() const { return m_ifdefedOut; }

    inline static TextBlockUserData *canCollapse(const QTextBlock& block) {
        TextBlockUserData *data = static_cast<TextBlockUserData*>(block.userData());
        if (!data || data->collapseMode() != CollapseAfter) {
            data = static_cast<TextBlockUserData*>(block.next().userData());
136
            if (!data || data->collapseMode() != TextBlockUserData::CollapseThis || data->m_ifdefedOut)
con's avatar
con committed
137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166
                data = 0;
        }
        return data;
    }

    inline static bool hasClosingCollapse(const QTextBlock &block) {
        TextBlockUserData *data = static_cast<TextBlockUserData*>(block.userData());
        return (data && data->hasClosingCollapse());
    }

    inline static bool hasClosingCollapseAtEnd(const QTextBlock &block) {
        TextBlockUserData *data = static_cast<TextBlockUserData*>(block.userData());
        return (data && data->hasClosingCollapseAtEnd());
    }

    inline static bool hasClosingCollapseInside(const QTextBlock &block) {
        TextBlockUserData *data = static_cast<TextBlockUserData*>(block.userData());
        return (data && data->hasClosingCollapseInside());
    }

    static QTextBlock testCollapse(const QTextBlock& block);
    static void doCollapse(const QTextBlock& block, bool visible);

    int collapseAtPos() const;

    enum MatchType { NoMatch, Match, Mismatch  };
    static MatchType checkOpenParenthesis(QTextCursor *cursor, QChar c);
    static MatchType checkClosedParenthesis(QTextCursor *cursor, QChar c);
    static MatchType matchCursorBackward(QTextCursor *cursor);
    static MatchType matchCursorForward(QTextCursor *cursor);
167 168
    static bool findPreviousOpenParenthesis(QTextCursor *cursor, bool select = false);
    static bool findNextClosingParenthesis(QTextCursor *cursor, bool select = false);
con's avatar
con committed
169

mae's avatar
mae committed
170
    static bool findPreviousBlockOpenParenthesis(QTextCursor *cursor, bool checkStartPosition = false);
171 172
    static bool findNextBlockClosingParenthesis(QTextCursor *cursor);

con's avatar
con committed
173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230

private:
    TextMarks m_marks;
    uint m_collapseIncludesClosure : 1;
    uint m_collapseMode : 4;
    uint m_closingCollapseMode : 4;
    uint m_collapsed : 1;
    uint m_ifdefedOut : 1;
    Parentheses m_parentheses;
};


class TEXTEDITOR_EXPORT TextEditDocumentLayout : public QPlainTextDocumentLayout
{
    Q_OBJECT

public:
    TextEditDocumentLayout(QTextDocument *doc);
    ~TextEditDocumentLayout();

    QRectF blockBoundingRect(const QTextBlock &block) const;

    static void setParentheses(const QTextBlock &block, const Parentheses &parentheses);
    static void clearParentheses(const QTextBlock &block) { setParentheses(block, Parentheses());}
    static Parentheses parentheses(const QTextBlock &block);
    static bool hasParentheses(const QTextBlock &block);
    static bool setIfdefedOut(const QTextBlock &block);
    static bool clearIfdefedOut(const QTextBlock &block);
    static bool ifdefedOut(const QTextBlock &block);

    static TextBlockUserData *testUserData(const QTextBlock &block) {
        return static_cast<TextBlockUserData*>(block.userData());
    }
    static TextBlockUserData *userData(const QTextBlock &block) {
        TextBlockUserData *data = static_cast<TextBlockUserData*>(block.userData());
        if (!data && block.isValid())
            const_cast<QTextBlock &>(block).setUserData((data = new TextBlockUserData));
        return data;
    }


    void emitDocumentSizeChanged() { emit documentSizeChanged(documentSize()); }
    int lastSaveRevision;
    bool hasMarks;
};


class BaseTextEditorEditable;

class TEXTEDITOR_EXPORT BaseTextEditor
  : public QPlainTextEdit
{
    Q_OBJECT

public:
    BaseTextEditor(QWidget *parent);
    ~BaseTextEditor();

231 232
    static ITextEditor *openEditorAt(const QString &fileName, int line, int column = 0,
                                     const QString &editorKind = QString());
con's avatar
con committed
233 234 235 236 237 238 239 240 241 242 243

    // EditorInterface
    Core::IFile * file();
    bool createNew(const QString &contents);
    bool open(const QString &fileName = QString());
    QByteArray saveState() const;
    bool restoreState(const QByteArray &state);
    QString displayName() const;

    // ITextEditor

244
    void gotoLine(int line, int column = 0);
con's avatar
con committed
245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272

    int position(
        ITextEditor::PositionOperation posOp = ITextEditor::Current
        , int at = -1) const;
    void convertPosition(int pos, int *line, int *column) const;

    ITextEditable *editableInterface() const;
    ITextMarkable *markableInterface() const;

    virtual void triggerCompletions();

    QChar characterAt(int pos) const;

    void print(QPrinter *);

    void setSuggestedFileName(const QString &suggestedFileName);
    QString mimeType() const;
    void setMimeType(const QString &mt);


    // Works only in conjunction with a syntax highlighter that puts
    // parentheses into text block user data
    void setParenthesesMatchingEnabled(bool b);
    bool isParenthesesMatchingEnabled() const;

    void setHighlightCurrentLine(bool b);
    bool highlightCurrentLine() const;

273 274 275
    void setHighlightBlocks(bool b);
    bool highlightBlocks() const;

con's avatar
con committed
276 277 278
    void setLineNumbersVisible(bool b);
    bool lineNumbersVisible() const;

279

con's avatar
con committed
280 281 282 283 284 285 286 287 288 289 290 291
    void setMarksVisible(bool b);
    bool marksVisible() const;

    void setRequestMarkEnabled(bool b);
    bool requestMarkEnabled() const;

    void setLineSeparatorsAllowed(bool b);
    bool lineSeparatorsAllowed() const;

    void setCodeFoldingVisible(bool b);
    bool codeFoldingVisible() const;

292 293 294
    void setCodeFoldingSupported(bool b);
    bool codeFoldingSupported() const;

con's avatar
con committed
295 296 297 298 299 300 301 302 303 304 305 306 307 308
    void setRevisionsVisible(bool b);
    bool revisionsVisible() const;

    void setVisibleWrapColumn(int column);
    int visibleWrapColumn() const;

    void setActionHack(QObject *);
    QObject *actionHack() const;

    void setTextCodec(QTextCodec *codec);
    QTextCodec *textCodec() const;

    void setReadOnly(bool b);

309 310
    void setTextCursor(const QTextCursor &cursor);

con's avatar
con committed
311 312 313
public slots:
    void setDisplayName(const QString &title);

314
    void paste();
con's avatar
con committed
315 316 317 318 319 320 321 322 323 324 325
    void cut();

    void zoomIn(int range = 1);
    void zoomOut(int range = 1);

    void deleteLine();
    void unCollapseAll();
    void collapse();
    void expand();
    void selectEncoding();

326 327 328 329 330
    void gotoBlockStart();
    void gotoBlockEnd();
    void gotoBlockStartWithSelection();
    void gotoBlockEndWithSelection();

331 332 333
    void selectBlockUp();
    void selectBlockDown();

334 335 336
    void moveLineUp();
    void moveLineDown();

337 338
    void cleanWhitespace();

con's avatar
con committed
339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357
signals:
    void changed();

    // ITextEditor
    void contentsChanged();

protected:
    bool event(QEvent *e);
    void keyPressEvent(QKeyEvent *e);
    void wheelEvent(QWheelEvent *e);
    void changeEvent(QEvent *e);

    // reimplemented to support block selection
    QMimeData *createMimeDataFromSelection() const;
    bool canInsertFromMimeData(const QMimeData *source) const;
    void insertFromMimeData(const QMimeData *source);

public:
    void duplicateFrom(BaseTextEditor *editor);
358

con's avatar
con committed
359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383
protected:
    BaseTextDocument *baseTextDocument() const;
    void setBaseTextDocument(BaseTextDocument *doc);

    void setDefaultPath(const QString &defaultPath);

    virtual BaseTextEditorEditable *createEditableInterface() = 0;

private slots:
    void editorContentsChange(int position, int charsRemoved, int charsAdded);
    void memorizeCursorPosition();
    void restoreCursorPosition();
    void highlightSearchResults(const QString &txt, QTextDocument::FindFlags findFlags);
    void setFindScope(const QTextCursor &);
    void currentEditorChanged(Core::IEditor *editor);

private:
    Internal::BaseTextEditorPrivate *d;
    friend class Internal::BaseTextEditorPrivate;

public:
    QWidget *extraArea() const;
    virtual int extraAreaWidth(int *markWidthPtr = 0) const;
    virtual void extraAreaPaintEvent(QPaintEvent *);
    virtual void extraAreaLeaveEvent(QEvent *);
384
    virtual void extraAreaMouseEvent(QMouseEvent *);
con's avatar
con committed
385 386 387 388 389 390 391 392

    const TabSettings &tabSettings() const;
    const DisplaySettings &displaySettings() const;

    void markBlocksAsChanged(QList<int> blockNumbers);

    void ensureCursorVisible();

393 394 395 396 397 398
    enum ExtraSelectionKind {
        CurrentLineSelection,
        ParenthesesMatchingSelection,
        CodeWarningsSelection,
        CodeSemanticsSelection,
        OtherSelection,
hjk's avatar
hjk committed
399
        FakeVimSelection,
400 401 402 403
        NExtraSelectionKinds
    };
    void setExtraSelections(ExtraSelectionKind kind, const QList<QTextEdit::ExtraSelection> &selections);
    QList<QTextEdit::ExtraSelection> extraSelections(ExtraSelectionKind kind) const;
con's avatar
con committed
404

405 406 407 408 409 410
    struct BlockRange
    {
        BlockRange() : first(0), last(-1) {}
        BlockRange(int first_position, int last_position)
          : first(first_position), last(last_position)
        {}
con's avatar
con committed
411 412 413 414 415 416
        int first;
        int last;
        inline bool isNull() const { return last < first; }
    };

    // the blocks list must be sorted
417
    void setIfdefedOutBlocks(const QList<BlockRange> &blocks);
con's avatar
con committed
418 419

public slots:
420 421 422
    virtual void format();
    virtual void unCommentSelection();
    virtual void setFontSettings(const TextEditor::FontSettings &);
con's avatar
con committed
423 424
    virtual void setTabSettings(const TextEditor::TabSettings &);
    virtual void setDisplaySettings(const TextEditor::DisplaySettings &);
425
    virtual void setStorageSettings(const TextEditor::StorageSettings &);
con's avatar
con committed
426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457

protected:
    bool viewportEvent(QEvent *event);

    void resizeEvent(QResizeEvent *);
    void paintEvent(QPaintEvent *);
    void timerEvent(QTimerEvent *);
    void mouseMoveEvent(QMouseEvent *);
    void mousePressEvent(QMouseEvent *);

    // Rertuns true if key triggers an indent.
    virtual bool isElectricCharacter(const QChar &ch) const;
    // Indent a text block based on previous line. Default does nothing
    virtual void indentBlock(QTextDocument *doc, QTextBlock block, QChar typedChar);
    // Indent at cursor. Calls indentBlock for selection or current line.
    virtual void indent(QTextDocument *doc, const QTextCursor &cursor, QChar typedChar);

protected slots:
    virtual void slotUpdateExtraAreaWidth();
    virtual void slotModificationChanged(bool);
    virtual void slotUpdateRequest(const QRect &r, int dy);
    virtual void slotCursorPositionChanged();
    virtual void slotUpdateBlockNotify(const QTextBlock &);

signals:
    void requestBlockUpdate(const QTextBlock &);
    void requestAutoCompletion(ITextEditable *editor, bool forced);

private:
    void indentOrUnindent(bool doIndent);
    void handleHomeKey(bool anchor);
    void handleBackspaceKey();
458
    void moveLineUpDown(bool up);
459
    void saveCurrentCursorPositionForNavigation();
con's avatar
con committed
460 461

    void toggleBlockVisible(const QTextBlock &block);
462
    QRect collapseBox();
con's avatar
con committed
463 464 465 466 467 468

    QTextBlock collapsedBlockAt(const QPoint &pos, QRect *box = 0) const;

    // parentheses matcher
private slots:
    void _q_matchParentheses();
469
    void _q_highlightBlocks();
con's avatar
con committed
470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504
    void slotSelectionChanged();
};


class TEXTEDITOR_EXPORT BaseTextEditorEditable
  : public ITextEditable
{
    Q_OBJECT
    friend class BaseTextEditor;
public:
    BaseTextEditorEditable(BaseTextEditor *editor);
    ~BaseTextEditorEditable();

    inline BaseTextEditor *editor() const { return e; }

    // EditorInterface
    inline QWidget *widget() { return e; }
    inline Core::IFile * file() { return e->file(); }
    inline bool createNew(const QString &contents) { return e->createNew(contents); }
    inline bool open(const QString &fileName = QString())
    {
        return e->open(fileName);
    }
    inline QString displayName() const { return e->displayName(); }
    inline void setDisplayName(const QString &title) { e->setDisplayName(title); }

    inline QByteArray saveState() const { return e->saveState(); }
    inline bool restoreState(const QByteArray &state) { return e->restoreState(state); }
    QToolBar *toolBar();

    // ITextEditor
    int find(const QString &string) const;

    int currentLine() const;
    int currentColumn() const;
505
    void gotoLine(int line, int column = 0) { e->gotoLine(line, column); }
con's avatar
con committed
506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547

    inline int position(
        ITextEditor::PositionOperation posOp = ITextEditor::Current
        , int at = -1) const { return e->position(posOp, at); }
    inline void convertPosition(int pos, int *line, int *column) const { e->convertPosition(pos, line, column); }
    QRect cursorRect(int pos = -1) const;

    QString contents() const;
    QString selectedText() const;
    QString textAt(int pos, int length) const;
    inline QChar characterAt(int pos) const { return e->characterAt(pos); }

    inline void triggerCompletions() { e->triggerCompletions(); } // slot?
    inline ITextMarkable *markableInterface() { return e->markableInterface(); }

    void setContextHelpId(const QString &id) { m_contextHelpId = id; }
    QString contextHelpId() const; // from IContext

    inline void setTextCodec(QTextCodec *codec) { e->setTextCodec(codec); }
    inline QTextCodec *textCodec() const { return e->textCodec(); }


    // ITextEditable
    void remove(int length);
    void insert(const QString &string);
    void replace(int length, const QString &string);
    void setCurPos(int pos);
    void select(int toPos);

private slots:
    void updateCursorPosition();

private:
    BaseTextEditor *e;
    mutable QString m_contextHelpId;
    QToolBar *m_toolBar;
    Core::Utils::LineColumnLabel *m_cursorPositionLabel;
};

} // namespace TextEditor

#endif // BASETEXTEDITOR_H