basetexteditor.cpp 228 KB
Newer Older
hjk's avatar
hjk committed
1
/****************************************************************************
con's avatar
con committed
2
**
3
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
hjk's avatar
hjk committed
4
** Contact: http://www.qt-project.org/legal
con's avatar
con committed
5
**
hjk's avatar
hjk committed
6
** This file is part of Qt Creator.
con's avatar
con committed
7
**
hjk's avatar
hjk committed
8 9 10 11 12 13 14
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
15
**
16
** GNU Lesser General Public License Usage
hjk's avatar
hjk committed
17 18 19 20 21 22 23 24 25
** 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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
con's avatar
con committed
26 27
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
hjk's avatar
hjk committed
28
****************************************************************************/
hjk's avatar
hjk committed
29

30 31
#include "basetexteditor.h"
#include "basetexteditor_p.h"
hjk's avatar
hjk committed
32

con's avatar
con committed
33
#include "basetextdocument.h"
34
#include "basetextdocumentlayout.h"
35
#include "behaviorsettings.h"
con's avatar
con committed
36
#include "codecselector.h"
37
#include "completionsettings.h"
38
#include "tabsettings.h"
Jarek Kobus's avatar
Jarek Kobus committed
39 40
#include "typingsettings.h"
#include "icodestylepreferences.h"
41
#include "syntaxhighlighter.h"
42
#include "indenter.h"
43
#include "autocompleter.h"
44
#include "snippet.h"
Leandro Melo's avatar
Leandro Melo committed
45 46 47
#include "codeassistant.h"
#include "defaultassistinterface.h"
#include "convenience.h"
48
#include "texteditorsettings.h"
49
#include "texteditoroverlay.h"
50
#include "circularclipboard.h"
51
#include "circularclipboardassist.h"
con's avatar
con committed
52

53
#include <aggregation/aggregate.h>
54
#include <coreplugin/actionmanager/actionmanager.h>
55
#include <coreplugin/actionmanager/actioncontainer.h>
con's avatar
con committed
56
#include <coreplugin/coreconstants.h>
57
#include <coreplugin/editormanager/editormanager.h>
58
#include <coreplugin/infobar.h>
59
#include <coreplugin/manhattanstyle.h>
con's avatar
con committed
60 61
#include <find/basetextfind.h>
#include <utils/linecolumnlabel.h>
62
#include <utils/hostosinfo.h>
hjk's avatar
hjk committed
63
#include <utils/qtcassert.h>
64
#include <utils/stylehelper.h>
65 66
#include <utils/tooltip/tooltip.h>
#include <utils/tooltip/tipcontents.h>
67
#include <utils/uncommentselection.h>
con's avatar
con committed
68

69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91
#include <QCoreApplication>
#include <QTextCodec>
#include <QDebug>
#include <QTimer>
#include <QTimeLine>
#include <QMimeData>
#include <QAbstractTextDocumentLayout>
#include <QApplication>
#include <QKeyEvent>
#include <QPainter>
#include <QPrinter>
#include <QPrintDialog>
#include <QScrollBar>
#include <QShortcut>
#include <QStyle>
#include <QTextCursor>
#include <QTextDocumentFragment>
#include <QTextBlock>
#include <QTextLayout>
#include <QToolBar>
#include <QMenu>
#include <QMessageBox>
#include <QClipboard>
con's avatar
con committed
92

93 94
//#define DO_FOO

Leandro Melo's avatar
Leandro Melo committed
95 96 97 98 99 100 101 102 103 104 105 106
/*!
    \namespace TextEditor
    \brief The TextEditor namespace contains the base text editor and several classes which
    provide supporting functionality like snippets, highlighting, \l{CodeAssist}{code assist},
    indentation and style, and others.
*/

/*!
    \namespace TextEditor::Internal
    \internal
*/

con's avatar
con committed
107 108
using namespace TextEditor;
using namespace TextEditor::Internal;
109
using namespace Utils;
con's avatar
con committed
110 111

namespace TextEditor {
112
namespace Internal {
con's avatar
con committed
113 114

class TextEditExtraArea : public QWidget {
115
    BaseTextEditorWidget *textEdit;
con's avatar
con committed
116
public:
117
    TextEditExtraArea(BaseTextEditorWidget *edit):QWidget(edit) {
con's avatar
con committed
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141
        textEdit = edit;
        setAutoFillBackground(true);
    }
public:

    QSize sizeHint() const {
        return QSize(textEdit->extraAreaWidth(), 0);
    }
protected:
    void paintEvent(QPaintEvent *event){
        textEdit->extraAreaPaintEvent(event);
    }
    void mousePressEvent(QMouseEvent *event){
        textEdit->extraAreaMouseEvent(event);
    }
    void mouseMoveEvent(QMouseEvent *event){
        textEdit->extraAreaMouseEvent(event);
    }
    void mouseReleaseEvent(QMouseEvent *event){
        textEdit->extraAreaMouseEvent(event);
    }
    void leaveEvent(QEvent *event){
        textEdit->extraAreaLeaveEvent(event);
    }
142 143 144
    void contextMenuEvent(QContextMenuEvent *event) {
        textEdit->extraAreaContextMenuEvent(event);
    }
con's avatar
con committed
145 146 147 148 149 150

    void wheelEvent(QWheelEvent *event) {
        QCoreApplication::sendEvent(textEdit->viewport(), event);
    }
};

151 152
} // namespace Internal
} // namespace TextEditor
con's avatar
con committed
153

154
Core::IEditor *BaseTextEditorWidget::openEditorAt(const QString &fileName, int line, int column,
hjk's avatar
hjk committed
155
                                 const Core::Id &editorKind,
156 157
                                 Core::EditorManager::OpenEditorFlags flags,
                                 bool *newEditor)
con's avatar
con committed
158
{
159
    Core::EditorManager *editorManager = Core::EditorManager::instance();
160
    editorManager->cutForwardNavigationHistory();
161
    editorManager->addCurrentPositionToNavigationHistory();
hjk's avatar
hjk committed
162
    Core::IEditor *editor = Core::EditorManager::openEditor(fileName, editorKind,
163
            flags, newEditor);
con's avatar
con committed
164
    TextEditor::ITextEditor *texteditor = qobject_cast<TextEditor::ITextEditor *>(editor);
165
    if (texteditor && line != -1) {
con's avatar
con committed
166 167 168
        texteditor->gotoLine(line, column);
        return texteditor;
    }
169

170
    return editor;
con's avatar
con committed
171 172
}

173
QString BaseTextEditorWidget::plainTextFromSelection() const
174
{
175 176 177 178 179 180 181 182 183 184 185 186
    QTextCursor cursor = textCursor();

    // Copy the selected text as plain text
    QString text = cursor.selectedText();
    return convertToPlainText(text);
}

QString BaseTextEditorWidget::convertToPlainText(const QString &txt)
{
    QString ret = txt;
    QChar *uc = ret.data();
    QChar *e = uc + ret.size();
187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202

    for (; uc != e; ++uc) {
        switch (uc->unicode()) {
        case 0xfdd0: // QTextBeginningOfFrame
        case 0xfdd1: // QTextEndOfFrame
        case QChar::ParagraphSeparator:
        case QChar::LineSeparator:
            *uc = QLatin1Char('\n');
            break;
        case QChar::Nbsp:
            *uc = QLatin1Char(' ');
            break;
        default:
            ;
        }
    }
203
    return ret;
204 205
}

206 207 208 209
static const char kTextBlockMimeType[] = "application/vnd.nokia.qtcreator.blocktext";
static const char kVerticalTextBlockMimeType[] = "application/vnd.nokia.qtcreator.vblocktext";


210
BaseTextEditorWidget::BaseTextEditorWidget(QWidget *parent)
con's avatar
con committed
211 212
    : QPlainTextEdit(parent)
{
213
    d = new BaseTextEditorWidgetPrivate;
con's avatar
con committed
214 215 216 217 218
    d->q = this;
    d->m_extraArea = new TextEditExtraArea(this);
    d->m_extraArea->setMouseTracking(true);
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);

219
    d->m_overlay = new TextEditorOverlay(this);
220
    d->m_snippetOverlay = new TextEditorOverlay(this);
221
    d->m_searchResultOverlay = new TextEditorOverlay(this);
222
    d->m_refactorOverlay = new RefactorOverlay(this);
223

con's avatar
con committed
224 225 226 227 228 229 230 231 232 233
    d->setupDocumentSignals(d->m_document);

    d->m_lastScrollPos = -1;

    // from RESEARCH

    setLayoutDirection(Qt::LeftToRight);
    viewport()->setMouseTracking(true);
    d->extraAreaSelectionAnchorBlockNumber
        = d->extraAreaToggleMarkBlockNumber
mae's avatar
mae committed
234
        = d->extraAreaHighlightFoldedBlockNumber
con's avatar
con committed
235 236
        = -1;

mae's avatar
mae committed
237
    d->visibleFoldedBlockNumber = d->suggestedVisibleFoldedBlockNumber = -1;
con's avatar
con committed
238

239 240
    connect(d->m_codeAssistant.data(), SIGNAL(finished()), this, SIGNAL(assistFinished()));

con's avatar
con committed
241 242 243
    connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(slotUpdateExtraAreaWidth()));
    connect(this, SIGNAL(modificationChanged(bool)), this, SLOT(slotModificationChanged(bool)));
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(slotCursorPositionChanged()));
Robert Loehning's avatar
Robert Loehning committed
244
    connect(this, SIGNAL(updateRequest(QRect,int)), this, SLOT(slotUpdateRequest(QRect,int)));
con's avatar
con committed
245 246 247 248 249 250
    connect(this, SIGNAL(selectionChanged()), this, SLOT(slotSelectionChanged()));

//     (void) new QShortcut(tr("CTRL+L"), this, SLOT(centerCursor()), 0, Qt::WidgetShortcut);
//     (void) new QShortcut(tr("F9"), this, SLOT(slotToggleMark()), 0, Qt::WidgetShortcut);
//     (void) new QShortcut(tr("F11"), this, SLOT(slotToggleBlockVisible()));

251 252 253 254
#ifdef DO_FOO
    (void) new QShortcut(tr("CTRL+D"), this, SLOT(doFoo()));
#endif

con's avatar
con committed
255 256 257 258

    // parentheses matcher
    d->m_formatRange = true;
    d->m_matchFormat.setForeground(Qt::red);
259
    d->m_matchFormat.setBackground(QColor(0xb4, 0xee, 0xb4));
con's avatar
con committed
260 261 262 263 264
    d->m_mismatchFormat.setBackground(Qt::magenta);
    d->m_parenthesesMatchingTimer = new QTimer(this);
    d->m_parenthesesMatchingTimer->setSingleShot(true);
    connect(d->m_parenthesesMatchingTimer, SIGNAL(timeout()), this, SLOT(_q_matchParentheses()));

265 266 267 268
    d->m_highlightBlocksTimer = new QTimer(this);
    d->m_highlightBlocksTimer->setSingleShot(true);
    connect(d->m_highlightBlocksTimer, SIGNAL(timeout()), this, SLOT(_q_highlightBlocks()));

269
    d->m_animator = 0;
con's avatar
con committed
270 271 272 273

    d->m_searchResultFormat.setBackground(QColor(0xffef0b));

    slotUpdateExtraAreaWidth();
con's avatar
con committed
274
    updateHighlights();
con's avatar
con committed
275 276
    setFrameStyle(QFrame::NoFrame);

277 278 279 280
    d->m_delayedUpdateTimer = new QTimer(this);
    d->m_delayedUpdateTimer->setSingleShot(true);
    connect(d->m_delayedUpdateTimer, SIGNAL(timeout()), viewport(), SLOT(update()));

mae's avatar
mae committed
281
    d->m_moveLineUndoHack = false;
con's avatar
con committed
282 283
}

284
BaseTextEditorWidget::~BaseTextEditorWidget()
con's avatar
con committed
285 286 287 288 289
{
    delete d;
    d = 0;
}

290
QString BaseTextEditorWidget::mimeType() const
con's avatar
con committed
291 292 293 294
{
    return d->m_document->mimeType();
}

295
void BaseTextEditorWidget::setMimeType(const QString &mt)
con's avatar
con committed
296 297 298 299
{
    d->m_document->setMimeType(mt);
}

300
void BaseTextEditorWidget::print(QPrinter *printer)
con's avatar
con committed
301 302 303 304 305
{
    const bool oldFullPage =  printer->fullPage();
    printer->setFullPage(true);
    QPrintDialog *dlg = new QPrintDialog(printer, this);
    dlg->setWindowTitle(tr("Print Document"));
306
    if (dlg->exec() == QDialog::Accepted)
con's avatar
con committed
307 308 309 310 311
        d->print(printer);
    printer->setFullPage(oldFullPage);
    delete dlg;
}

mae's avatar
mae committed
312
static int foldBoxWidth(const QFontMetrics &fm)
313 314 315 316 317
{
    const int lineSpacing = fm.lineSpacing();
    return lineSpacing + lineSpacing%2 + 1;
}

con's avatar
con committed
318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353
static void printPage(int index, QPainter *painter, const QTextDocument *doc,
                      const QRectF &body, const QRectF &titleBox,
                      const QString &title)
{
    painter->save();

    painter->translate(body.left(), body.top() - (index - 1) * body.height());
    QRectF view(0, (index - 1) * body.height(), body.width(), body.height());

    QAbstractTextDocumentLayout *layout = doc->documentLayout();
    QAbstractTextDocumentLayout::PaintContext ctx;

    painter->setFont(QFont(doc->defaultFont()));
    QRectF box = titleBox.translated(0, view.top());
    int dpix = painter->device()->logicalDpiX();
    int dpiy = painter->device()->logicalDpiY();
    int mx = 5 * dpix / 72.0;
    int my = 2 * dpiy / 72.0;
    painter->fillRect(box.adjusted(-mx, -my, mx, my), QColor(210, 210, 210));
    if (!title.isEmpty())
        painter->drawText(box, Qt::AlignCenter, title);
    const QString pageString = QString::number(index);
    painter->drawText(box, Qt::AlignRight, pageString);

    painter->setClipRect(view);
    ctx.clip = view;
    // don't use the system palette text as default text color, on HP/UX
    // for example that's white, and white text on white paper doesn't
    // look that nice
    ctx.palette.setColor(QPalette::Text, Qt::black);

    layout->draw(painter, ctx);

    painter->restore();
}

354
void BaseTextEditorWidgetPrivate::print(QPrinter *printer)
con's avatar
con committed
355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490
{
    QTextDocument *doc = q->document();

    QString title = q->displayName();
    if (title.isEmpty())
        printer->setDocName(title);


    QPainter p(printer);

    // Check that there is a valid device to print to.
    if (!p.isActive())
        return;

    doc = doc->clone(doc);

    QTextOption opt = doc->defaultTextOption();
    opt.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
    doc->setDefaultTextOption(opt);

    (void)doc->documentLayout(); // make sure that there is a layout


    QColor background = q->palette().color(QPalette::Base);
    bool backgroundIsDark = background.value() < 128;

    for (QTextBlock srcBlock = q->document()->firstBlock(), dstBlock = doc->firstBlock();
         srcBlock.isValid() && dstBlock.isValid();
         srcBlock = srcBlock.next(), dstBlock = dstBlock.next()) {


        QList<QTextLayout::FormatRange> formatList = srcBlock.layout()->additionalFormats();
        if (backgroundIsDark) {
            // adjust syntax highlighting colors for better contrast
            for (int i = formatList.count() - 1; i >=0; --i) {
                QTextCharFormat &format = formatList[i].format;
                if (format.background().color() == background) {
                    QBrush brush = format.foreground();
                    QColor color = brush.color();
                    int h,s,v,a;
                    color.getHsv(&h, &s, &v, &a);
                    color.setHsv(h, s, qMin(128, v), a);
                    brush.setColor(color);
                    format.setForeground(brush);
                }
                format.setBackground(Qt::white);
            }
        }

        dstBlock.layout()->setAdditionalFormats(formatList);
    }

    QAbstractTextDocumentLayout *layout = doc->documentLayout();
    layout->setPaintDevice(p.device());

    int dpiy = p.device()->logicalDpiY();
    int margin = (int) ((2/2.54)*dpiy); // 2 cm margins

    QTextFrameFormat fmt = doc->rootFrame()->frameFormat();
    fmt.setMargin(margin);
    doc->rootFrame()->setFrameFormat(fmt);

    QRectF pageRect(printer->pageRect());
    QRectF body = QRectF(0, 0, pageRect.width(), pageRect.height());
    QFontMetrics fontMetrics(doc->defaultFont(), p.device());

    QRectF titleBox(margin,
                    body.top() + margin
                    - fontMetrics.height()
                    - 6 * dpiy / 72.0,
                    body.width() - 2*margin,
                    fontMetrics.height());
    doc->setPageSize(body.size());

    int docCopies;
    int pageCopies;
    if (printer->collateCopies() == true){
        docCopies = 1;
        pageCopies = printer->numCopies();
    } else {
        docCopies = printer->numCopies();
        pageCopies = 1;
    }

    int fromPage = printer->fromPage();
    int toPage = printer->toPage();
    bool ascending = true;

    if (fromPage == 0 && toPage == 0) {
        fromPage = 1;
        toPage = doc->pageCount();
    }
    // paranoia check
    fromPage = qMax(1, fromPage);
    toPage = qMin(doc->pageCount(), toPage);

    if (printer->pageOrder() == QPrinter::LastPageFirst) {
        int tmp = fromPage;
        fromPage = toPage;
        toPage = tmp;
        ascending = false;
    }

    for (int i = 0; i < docCopies; ++i) {

        int page = fromPage;
        while (true) {
            for (int j = 0; j < pageCopies; ++j) {
                if (printer->printerState() == QPrinter::Aborted
                    || printer->printerState() == QPrinter::Error)
                    goto UserCanceled;
                printPage(page, &p, doc, body, titleBox, title);
                if (j < pageCopies - 1)
                    printer->newPage();
            }

            if (page == toPage)
                break;

            if (ascending)
                ++page;
            else
                --page;

            printer->newPage();
        }

        if ( i < docCopies - 1)
            printer->newPage();
    }

UserCanceled:
    delete doc;
}


491
int BaseTextEditorWidgetPrivate::visualIndent(const QTextBlock &block) const
492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507
{
    if (!block.isValid())
        return 0;
    const QTextDocument *document = block.document();
    int i = 0;
    while (i < block.length()) {
        if (!document->characterAt(block.position() + i).isSpace()) {
            QTextCursor cursor(block);
            cursor.setPosition(block.position() + i);
            return q->cursorRect(cursor).x();
        }
        ++i;
    }

    return 0;
}
con's avatar
con committed
508

509
ITextMarkable *BaseTextEditorWidget::markableInterface() const
con's avatar
con committed
510 511 512 513
{
    return baseTextDocument()->documentMarker();
}

514
BaseTextEditor *BaseTextEditorWidget::editor() const
con's avatar
con committed
515
{
516
    if (!d->m_editor) {
Leandro Melo's avatar
Leandro Melo committed
517 518
        d->m_editor = const_cast<BaseTextEditorWidget *>(this)->createEditor();
        d->m_codeAssistant->configure(d->m_editor);
con's avatar
con committed
519
        connect(this, SIGNAL(textChanged()),
520
                d->m_editor, SIGNAL(contentsChanged()));
con's avatar
con committed
521
        connect(this, SIGNAL(changed()),
522
                d->m_editor, SIGNAL(changed()));
con's avatar
con committed
523
    }
524
    return d->m_editor;
con's avatar
con committed
525 526 527
}


528
void BaseTextEditorWidget::selectEncoding()
con's avatar
con committed
529
{
530
    BaseTextDocument *doc = d->m_document.data();
con's avatar
con committed
531 532 533
    CodecSelector codecSelector(this, doc);

    switch (codecSelector.exec()) {
534 535 536 537 538 539 540
    case CodecSelector::Reload: {
        QString errorString;
        if (!doc->reload(&errorString, codecSelector.selectedCodec())) {
            QMessageBox::critical(this, tr("File Error"), errorString);
            break;
        }
        break; }
con's avatar
con committed
541 542
    case CodecSelector::Save:
        doc->setCodec(codecSelector.selectedCodec());
543
        Core::EditorManager::instance()->saveEditor(editor());
con's avatar
con committed
544 545 546 547 548 549
        break;
    case CodecSelector::Cancel:
        break;
    }
}

550
QString BaseTextEditorWidget::msgTextTooLarge(quint64 size)
551 552 553 554 555
{
    return tr("The text is too large to be displayed (%1 MB).").
           arg(size >> 20);
}

556
bool BaseTextEditorWidget::createNew(const QString &contents)
con's avatar
con committed
557
{
558 559 560 561 562
    if (contents.size() > Core::EditorManager::maxTextFileSize()) {
        setPlainText(msgTextTooLarge(contents.size()));
        document()->setModified(false);
        return false;
    }
con's avatar
con committed
563 564 565 566 567
    setPlainText(contents);
    document()->setModified(false);
    return true;
}

568 569 570 571
void BaseTextEditorWidget::updateCannotDecodeInfo()
{
    setReadOnly(d->m_document->hasDecodingError());
    if (d->m_document->hasDecodingError()) {
Orgad Shaneh's avatar
Orgad Shaneh committed
572
        Core::InfoBarEntry info(Core::Id(Constants::SELECT_ENCODING),
573 574 575 576 577
            tr("<b>Error:</b> Could not decode \"%1\" with \"%2\"-encoding. Editing not possible.")
            .arg(displayName()).arg(QString::fromLatin1(d->m_document->codec()->name())));
        info.setCustomButtonInfo(tr("Select Encoding"), this, SLOT(selectEncoding()));
        d->m_document->infoBar()->addInfo(info);
    } else {
Orgad Shaneh's avatar
Orgad Shaneh committed
578
        d->m_document->infoBar()->removeInfo(Core::Id(Constants::SELECT_ENCODING));
579 580 581
    }
}

582
bool BaseTextEditorWidget::open(QString *errorString, const QString &fileName, const QString &realFileName)
con's avatar
con committed
583
{
584
    if (d->m_document->open(errorString, fileName, realFileName)) {
con's avatar
con committed
585
        moveCursor(QTextCursor::Start);
586
        updateCannotDecodeInfo();
con's avatar
con committed
587 588 589 590 591
        return true;
    }
    return false;
}

592 593 594
/*
  Collapses the first comment in a file, if there is only whitespace above
  */
595
void BaseTextEditorWidgetPrivate::foldLicenseHeader()
596 597
{
    QTextDocument *doc = q->document();
598
    BaseTextDocumentLayout *documentLayout = qobject_cast<BaseTextDocumentLayout*>(doc->documentLayout());
599 600 601
    QTC_ASSERT(documentLayout, return);
    QTextBlock block = doc->firstBlock();
    const TabSettings &ts = m_document->tabSettings();
602
    while (block.isValid() && block.isVisible()) {
603
        QString text = block.text();
mae's avatar
mae committed
604 605 606 607 608 609 610 611 612
        if (BaseTextDocumentLayout::canFold(block) && block.next().isVisible()) {
            if (text.trimmed().startsWith(QLatin1String("/*"))) {
                BaseTextDocumentLayout::doFoldOrUnfold(block, false);
                moveCursorVisible();
                documentLayout->requestUpdate();
                documentLayout->emitDocumentSizeChanged();
                break;
            }
        }
613 614 615 616 617 618
        if (ts.firstNonSpace(text) < text.size())
            break;
        block = block.next();
    }
}

619
const Utils::ChangeSet &BaseTextEditorWidget::changeSet() const
620 621 622 623
{
    return d->m_changeSet;
}

624
void BaseTextEditorWidget::setChangeSet(const Utils::ChangeSet &changeSet)
625
{
Roberto Raggi's avatar
Roberto Raggi committed
626 627
    using namespace Utils;

628
    d->m_changeSet = changeSet;
Roberto Raggi's avatar
Roberto Raggi committed
629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655

    foreach (const ChangeSet::EditOp &op, changeSet.operationList()) {
        // ### TODO: process the edit operation

        switch (op.type) {
        case ChangeSet::EditOp::Replace:
            break;

        case ChangeSet::EditOp::Move:
            break;

        case ChangeSet::EditOp::Insert:
            break;

        case ChangeSet::EditOp::Remove:
            break;

        case ChangeSet::EditOp::Flip:
            break;

        case ChangeSet::EditOp::Copy:
            break;

        default:
            break;
        } // switch
    }
656 657
}

658
Core::IDocument *BaseTextEditorWidget::editorDocument() const
con's avatar
con committed
659
{
660
    return d->m_document.data();
con's avatar
con committed
661 662
}

663
void BaseTextEditorWidget::editorContentsChange(int position, int charsRemoved, int charsAdded)
con's avatar
con committed
664
{
665 666 667
    if (d->m_animator)
        d->m_animator->finish();

con's avatar
con committed
668
    d->m_contentsChanged = true;
669
    QTextDocument *doc = document();
670
    BaseTextDocumentLayout *documentLayout = static_cast<BaseTextDocumentLayout*>(doc->documentLayout());
con's avatar
con committed
671 672 673

    // Keep the line numbers and the block information for the text marks updated
    if (charsRemoved != 0) {
674 675
        documentLayout->updateMarksLineNumber();
        documentLayout->updateMarksBlock(document()->findBlock(position));
con's avatar
con committed
676
    } else {
677 678
        const QTextBlock posBlock = doc->findBlock(position);
        const QTextBlock nextBlock = doc->findBlock(position + charsAdded);
con's avatar
con committed
679
        if (posBlock != nextBlock) {
680 681 682
            documentLayout->updateMarksLineNumber();
            documentLayout->updateMarksBlock(posBlock);
            documentLayout->updateMarksBlock(nextBlock);
con's avatar
con committed
683
        } else {
684
            documentLayout->updateMarksBlock(posBlock);
con's avatar
con committed
685 686
        }
    }
687

688 689 690
    if (d->m_snippetOverlay->isVisible()) {
        QTextCursor cursor = textCursor();
        cursor.setPosition(position);
691
        d->snippetCheckCursor(cursor);
692 693
    }

694
    if (doc->isRedoAvailable())
695
        emit editor()->contentsChangedBecauseOfUndo();
Leandro Melo's avatar
Leandro Melo committed
696 697 698

    if (charsAdded != 0 && characterAt(position + charsAdded - 1).isPrint())
        d->m_assistRelevantContentAdded = true;
con's avatar
con committed
699 700
}

701
void BaseTextEditorWidget::slotSelectionChanged()
con's avatar
con committed
702
{
mae's avatar
mae committed
703 704 705
    if (d->m_inBlockSelectionMode && !textCursor().hasSelection()) {
        d->m_inBlockSelectionMode = false;
        d->m_blockSelection.clear();
con's avatar
con committed
706
        viewport()->update();
mae's avatar
mae committed
707 708
    }

709 710
    if (!d->m_selectBlockAnchor.isNull() && !textCursor().hasSelection())
        d->m_selectBlockAnchor = QTextCursor();
711 712 713

    // Clear any link which might be showing when the selection changes
    clearLink();
con's avatar
con committed
714 715
}

716
void BaseTextEditorWidget::gotoBlockStart()
717 718
{
    QTextCursor cursor = textCursor();
719
    if (TextBlockUserData::findPreviousOpenParenthesis(&cursor, false)) {
720
        setTextCursor(cursor);
721 722
        _q_matchParentheses();
    }
723 724
}

725
void BaseTextEditorWidget::gotoBlockEnd()
726 727
{
    QTextCursor cursor = textCursor();
728
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, false)) {
729
        setTextCursor(cursor);
730 731
        _q_matchParentheses();
    }
732 733
}

734
void BaseTextEditorWidget::gotoBlockStartWithSelection()
735 736
{
    QTextCursor cursor = textCursor();
737
    if (TextBlockUserData::findPreviousOpenParenthesis(&cursor, true)) {
738
        setTextCursor(cursor);
739 740
        _q_matchParentheses();
    }
741 742
}

743
void BaseTextEditorWidget::gotoBlockEndWithSelection()
744 745
{
    QTextCursor cursor = textCursor();
746
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, true)) {
747
        setTextCursor(cursor);
748 749 750 751
        _q_matchParentheses();
    }
}

mae's avatar
mae committed
752

753
void BaseTextEditorWidget::gotoLineStart()
mae's avatar
mae committed
754 755 756 757
{
    handleHomeKey(false);
}

758
void BaseTextEditorWidget::gotoLineStartWithSelection()
mae's avatar
mae committed
759 760 761 762
{
    handleHomeKey(true);
}

763
void BaseTextEditorWidget::gotoLineEnd()
mae's avatar
mae committed
764 765 766 767
{
    moveCursor(QTextCursor::EndOfLine);
}

768
void BaseTextEditorWidget::gotoLineEndWithSelection()
mae's avatar
mae committed
769 770 771 772
{
    moveCursor(QTextCursor::EndOfLine, QTextCursor::KeepAnchor);
}

773
void BaseTextEditorWidget::gotoNextLine()
mae's avatar
mae committed
774
{
775
    moveCursor(QTextCursor::Down);
mae's avatar
mae committed
776 777
}

778
void BaseTextEditorWidget::gotoNextLineWithSelection()
mae's avatar
mae committed
779
{
780
    moveCursor(QTextCursor::Down, QTextCursor::KeepAnchor);
mae's avatar
mae committed
781 782
}

783
void BaseTextEditorWidget::gotoPreviousLine()
mae's avatar
mae committed
784
{
785
    moveCursor(QTextCursor::Up);
mae's avatar
mae committed
786 787
}

788
void BaseTextEditorWidget::gotoPreviousLineWithSelection()
mae's avatar
mae committed
789
{
790
    moveCursor(QTextCursor::Up, QTextCursor::KeepAnchor);
mae's avatar
mae committed
791 792
}

793
void BaseTextEditorWidget::gotoPreviousCharacter()
mae's avatar
mae committed
794 795 796 797
{
    moveCursor(QTextCursor::PreviousCharacter);
}

798
void BaseTextEditorWidget::gotoPreviousCharacterWithSelection()
mae's avatar
mae committed
799 800 801 802
{
    moveCursor(QTextCursor::PreviousCharacter, QTextCursor::KeepAnchor);
}

803
void BaseTextEditorWidget::gotoNextCharacter()
mae's avatar
mae committed
804 805 806 807
{
    moveCursor(QTextCursor::NextCharacter);
}

808
void BaseTextEditorWidget::gotoNextCharacterWithSelection()
mae's avatar
mae committed
809 810 811 812
{
    moveCursor(QTextCursor::NextCharacter, QTextCursor::KeepAnchor);
}

813
void BaseTextEditorWidget::gotoPreviousWord()
mae's avatar
mae committed
814 815
{
    moveCursor(QTextCursor::PreviousWord);
816
    setTextCursor(textCursor());
mae's avatar
mae committed
817 818
}

819
void BaseTextEditorWidget::gotoPreviousWordWithSelection()
mae's avatar
mae committed
820 821
{
    moveCursor(QTextCursor::PreviousWord, QTextCursor::KeepAnchor);
822
    setTextCursor(textCursor());
mae's avatar
mae committed
823 824
}

825
void BaseTextEditorWidget::gotoNextWord()
mae's avatar
mae committed
826 827
{
    moveCursor(QTextCursor::NextWord);
828
    setTextCursor(textCursor());
mae's avatar
mae committed
829 830
}

831
void BaseTextEditorWidget::gotoNextWordWithSelection()
mae's avatar
mae committed
832 833
{
    moveCursor(QTextCursor::NextWord, QTextCursor::KeepAnchor);
834
    setTextCursor(textCursor());
mae's avatar
mae committed
835 836
}

837
void BaseTextEditorWidget::gotoPreviousWordCamelCase()
mae's avatar
mae committed
838 839 840 841 842 843
{
    QTextCursor c = textCursor();
    camelCaseLeft(c, QTextCursor::MoveAnchor);
    setTextCursor(c);
}

844
void BaseTextEditorWidget::gotoPreviousWordCamelCaseWithSelection()
mae's avatar
mae committed
845 846 847 848 849 850
{
    QTextCursor c = textCursor();
    camelCaseLeft(c, QTextCursor::KeepAnchor);
    setTextCursor(c);
}

851
void BaseTextEditorWidget::gotoNextWordCamelCase()
mae's avatar
mae committed
852 853 854 855 856 857
{
    QTextCursor c = textCursor();
    camelCaseRight(c, QTextCursor::MoveAnchor);
    setTextCursor(c);
}

858
void BaseTextEditorWidget::gotoNextWordCamelCaseWithSelection()
mae's avatar
mae committed
859 860 861 862 863 864
{
    QTextCursor c = textCursor();
    camelCaseRight(c, QTextCursor::KeepAnchor);
    setTextCursor(c);
}

865 866
static QTextCursor flippedCursor(const QTextCursor &cursor)
{
867 868 869 870
    QTextCursor flipped = cursor;
    flipped.clearSelection();
    flipped.setPosition(cursor.anchor(), QTextCursor::KeepAnchor);
    return flipped;
871 872
}

873
bool BaseTextEditorWidget::selectBlockUp()
874 875 876 877 878 879 880 881
{
    QTextCursor cursor = textCursor();
    if (!cursor.hasSelection())
        d->m_selectBlockAnchor = cursor;
    else
        cursor.setPosition(cursor.selectionStart());

    if (!TextBlockUserData::findPreviousOpenParenthesis(&cursor, false))
882
        return false;
883
    if (!TextBlockUserData::findNextClosingParenthesis(&cursor, true))
884 885
        return false;

886 887
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
888
    return true;
889 890
}

891
bool BaseTextEditorWidget::selectBlockDown()
892 893 894 895 896
{
    QTextCursor tc = textCursor();
    QTextCursor cursor = d->m_selectBlockAnchor;

    if (!tc.hasSelection() || cursor.isNull())
897
        return false;
898 899 900 901 902 903 904 905 906 907 908 909 910
    tc.setPosition(tc.selectionStart());

    forever {
        QTextCursor ahead = cursor;
        if (!TextBlockUserData::findPreviousOpenParenthesis(&ahead, false))
            break;
        if (ahead.position() <= tc.position())
            break;
        cursor = ahead;
    }
    if ( cursor != d->m_selectBlockAnchor)
        TextBlockUserData::findNextClosingParenthesis(&cursor, true);

911 912
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
913
    return true;
914 915
}

916
void BaseTextEditorWidget::copyLineUp()
917 918 919 920
{
    copyLineUpDown(true);
}

921
void BaseTextEditorWidget::copyLineDown()
922 923 924 925
{
    copyLineUpDown(false);
}

926
// @todo: Potential reuse of some code around the following functions...
927
void BaseTextEditorWidget::copyLineUpDown(bool up)
928 929 930 931 932 933 934 935 936 937 938
{
    QTextCursor cursor = textCursor();
    QTextCursor move = cursor;
    move.beginEditBlock();

    bool hasSelection = cursor.hasSelection();

    if (hasSelection) {
        move.setPosition(cursor.selectionStart());
        move.movePosition(QTextCursor::StartOfBlock);
        move.setPosition(cursor.selectionEnd(), QTextCursor::KeepAnchor);
939 940
        move.movePosition(move.atBlockStart() ? QTextCursor::Left: QTextCursor::EndOfBlock,
                          QTextCursor::KeepAnchor);
941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977
    } else {
        move.movePosition(QTextCursor::StartOfBlock);
        move.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
    }

    QString text = move.selectedText();

    if (up) {
        move.setPosition(cursor.selectionStart());
        move.movePosition(QTextCursor::StartOfBlock);
        move.insertBlock();
        move.movePosition(QTextCursor::Left);
    } else {
        move.movePosition(QTextCursor::EndOfBlock);
        if (move.atBlockStart()) {
            move.movePosition(QTextCursor::NextBlock);
            move.insertBlock();
            move.movePosition(QTextCursor::Left);
        } else {
            move.insertBlock();
        }
    }

    int start = move.position();
    move.clearSelection();
    move.insertText(text);
    int end = move.position();

    move.setPosition(start);
    move.setPosition(end, QTextCursor::KeepAnchor);

    indent(document(), move, QChar::Null);
    move.endEditBlock();

    setTextCursor(move);
}

978
void BaseTextEditorWidget::joinLines()
979
{
980 981 982
    QTextCursor cursor = textCursor();
    QTextCursor start = cursor;
    QTextCursor end = cursor;
983

984 985
    start.setPosition(cursor.selectionStart());
    end.setPosition(cursor.selectionEnd() - 1);
986

987
    int lineCount = qMax(1, end.blockNumber() - start.blockNumber());
988

989 990 991 992 993 994 995
    cursor.beginEditBlock();
    cursor.setPosition(cursor.selectionStart());
    while (lineCount--) {
        cursor.movePosition(QTextCursor::NextBlock);
        cursor.movePosition(QTextCursor::StartOfBlock);
        cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
        QString cutLine = cursor.selectedText();
996

997
        // Collapse leading whitespaces to one or insert whitespace
998
        cutLine.replace(QRegExp(QLatin1String("^\\s*")), QLatin1String(" "));
999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009
        cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor);
        cursor.removeSelectedText();

        cursor.movePosition(QTextCursor::PreviousBlock);
        cursor.movePosition(QTextCursor::EndOfBlock);

        cursor.insertText(cutLine);
    }
    cursor.endEditBlock();

    setTextCursor(cursor);
1010 1011
}

1012
void BaseTextEditorWidget::insertLineAbove()
1013 1014 1015
{
    QTextCursor cursor = textCursor();
    cursor.beginEditBlock();
1016 1017 1018
    // If the cursor is at the beginning of the document,
    // it should still insert a line above the current line.
    cursor.movePosition(QTextCursor::StartOfBlock, QTextCursor::MoveAnchor);
1019
    cursor.insertBlock();
1020
    cursor.movePosition(QTextCursor::PreviousBlock, QTextCursor::MoveAnchor);
1021 1022 1023 1024 1025
    indent(document(), cursor, QChar::Null);
    cursor.endEditBlock();
    setTextCursor(cursor);
}

1026
void BaseTextEditorWidget::insertLineBelow()
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
{
    QTextCursor cursor = textCursor();
    cursor.beginEditBlock();
    cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::MoveAnchor);
    cursor.insertBlock();
    indent(document(), cursor, QChar::Null);
    cursor.endEditBlock();
    setTextCursor(cursor);
}

1037
void BaseTextEditorWidget::moveLineUp()
1038 1039 1040 1041
{
    moveLineUpDown(true);
}

1042
void BaseTextEditorWidget::moveLineDown()
1043 1044 1045 1046
{
    moveLineUpDown(false);
}

1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
void BaseTextEditorWidget::uppercaseSelection()
{
    transformSelection(&QString::toUpper);
}


void BaseTextEditorWidget::lowercaseSelection()
{
    transformSelection(&QString::toLower);
}

1058 1059 1060 1061 1062 1063 1064 1065 1066 1067
void BaseTextEditorWidget::indent()
{
    indentOrUnindent(true);
}

void BaseTextEditorWidget::unindent()
{
    indentOrUnindent(false);
}

1068 1069
void BaseTextEditorWidget::openLinkUnderCursor()
{
1070 1071
    Link symbolLink = findLinkAt(textCursor());

1072 1073
    openLink(symbolLink, alwaysOpenLinksInNextSplit());
}
1074

1075 1076 1077
void BaseTextEditorWidget::openLinkUnderCursorInNextSplit()
{
    Link symbolLink = findLinkAt(textCursor());
1078

1079
    openLink(symbolLink, !alwaysOpenLinksInNextSplit());
1080 1081
}