basetexteditor.cpp 227 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 "snippets/snippet.h"
39
#include "tabsettings.h"
Jarek Kobus's avatar
Jarek Kobus committed
40 41
#include "typingsettings.h"
#include "icodestylepreferences.h"
42
#include "syntaxhighlighter.h"
43
#include "indenter.h"
44
#include "autocompleter.h"
Leandro Melo's avatar
Leandro Melo committed
45
#include "convenience.h"
46
#include "texteditorsettings.h"
47
#include "texteditoroverlay.h"
48
#include "circularclipboard.h"
49
#include "circularclipboardassist.h"
50 51
#include <texteditor/codeassist/codeassistant.h>
#include <texteditor/codeassist/defaultassistinterface.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
*/

107
using namespace Utils;
con's avatar
con committed
108 109

namespace TextEditor {
110
namespace Internal {
con's avatar
con committed
111

hjk's avatar
hjk committed
112 113
class TextEditExtraArea : public QWidget
{
con's avatar
con committed
114
public:
hjk's avatar
hjk committed
115 116 117
    TextEditExtraArea(BaseTextEditorWidget *edit)
        : QWidget(edit)
    {
con's avatar
con committed
118 119 120 121
        textEdit = edit;
        setAutoFillBackground(true);
    }

hjk's avatar
hjk committed
122
protected:
con's avatar
con committed
123 124 125
    QSize sizeHint() const {
        return QSize(textEdit->extraAreaWidth(), 0);
    }
hjk's avatar
hjk committed
126
    void paintEvent(QPaintEvent *event) {
con's avatar
con committed
127 128
        textEdit->extraAreaPaintEvent(event);
    }
hjk's avatar
hjk committed
129
    void mousePressEvent(QMouseEvent *event) {
con's avatar
con committed
130 131
        textEdit->extraAreaMouseEvent(event);
    }
hjk's avatar
hjk committed
132
    void mouseMoveEvent(QMouseEvent *event) {
con's avatar
con committed
133 134
        textEdit->extraAreaMouseEvent(event);
    }
hjk's avatar
hjk committed
135
    void mouseReleaseEvent(QMouseEvent *event) {
con's avatar
con committed
136 137
        textEdit->extraAreaMouseEvent(event);
    }
hjk's avatar
hjk committed
138
    void leaveEvent(QEvent *event) {
con's avatar
con committed
139 140
        textEdit->extraAreaLeaveEvent(event);
    }
141 142 143
    void contextMenuEvent(QContextMenuEvent *event) {
        textEdit->extraAreaContextMenuEvent(event);
    }
con's avatar
con committed
144 145 146 147

    void wheelEvent(QWheelEvent *event) {
        QCoreApplication::sendEvent(textEdit->viewport(), event);
    }
hjk's avatar
hjk committed
148 149 150

private:
    BaseTextEditorWidget *textEdit;
con's avatar
con committed
151 152
};

153
} // namespace Internal
hjk's avatar
hjk committed
154 155

using namespace Internal;
con's avatar
con committed
156

157
QString BaseTextEditorWidget::plainTextFromSelection(const QTextCursor &cursor) const
158
{
159 160 161 162 163 164 165 166 167 168
    // 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();
169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184

    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:
            ;
        }
    }
185
    return ret;
186 187
}

Orgad Shaneh's avatar
Orgad Shaneh committed
188 189
static const char kTextBlockMimeType[] = "application/vnd.qtcreator.blocktext";
static const char kVerticalTextBlockMimeType[] = "application/vnd.qtcreator.vblocktext";
190 191


192
BaseTextEditorWidget::BaseTextEditorWidget(QWidget *parent)
con's avatar
con committed
193 194
    : QPlainTextEdit(parent)
{
195
    d = new BaseTextEditorWidgetPrivate;
con's avatar
con committed
196 197 198 199 200
    d->q = this;
    d->m_extraArea = new TextEditExtraArea(this);
    d->m_extraArea->setMouseTracking(true);
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);

201
    d->m_overlay = new TextEditorOverlay(this);
202
    d->m_snippetOverlay = new TextEditorOverlay(this);
203
    d->m_searchResultOverlay = new TextEditorOverlay(this);
204
    d->m_refactorOverlay = new RefactorOverlay(this);
205

con's avatar
con committed
206 207 208 209 210 211 212 213 214 215
    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
216
        = d->extraAreaHighlightFoldedBlockNumber
con's avatar
con committed
217 218
        = -1;

mae's avatar
mae committed
219
    d->visibleFoldedBlockNumber = d->suggestedVisibleFoldedBlockNumber = -1;
con's avatar
con committed
220

221 222
    connect(d->m_codeAssistant.data(), SIGNAL(finished()), this, SIGNAL(assistFinished()));

con's avatar
con committed
223 224 225
    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
226
    connect(this, SIGNAL(updateRequest(QRect,int)), this, SLOT(slotUpdateRequest(QRect,int)));
con's avatar
con committed
227 228 229 230 231 232
    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()));

233 234 235 236
#ifdef DO_FOO
    (void) new QShortcut(tr("CTRL+D"), this, SLOT(doFoo()));
#endif

con's avatar
con committed
237 238 239 240

    // parentheses matcher
    d->m_formatRange = true;
    d->m_matchFormat.setForeground(Qt::red);
241
    d->m_matchFormat.setBackground(QColor(0xb4, 0xee, 0xb4));
242 243
    d->m_mismatchFormat.setBackground(palette().color(QPalette::Base).value() < 128
                                      ? Qt::darkMagenta : Qt::magenta);
244 245
    d->m_parenthesesMatchingTimer.setSingleShot(true);
    connect(&d->m_parenthesesMatchingTimer, SIGNAL(timeout()), this, SLOT(_q_matchParentheses()));
con's avatar
con committed
246

247 248
    d->m_highlightBlocksTimer.setSingleShot(true);
    connect(&d->m_highlightBlocksTimer, SIGNAL(timeout()), this, SLOT(_q_highlightBlocks()));
249

250
    d->m_animator = 0;
con's avatar
con committed
251 252 253 254

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

    slotUpdateExtraAreaWidth();
con's avatar
con committed
255
    updateHighlights();
con's avatar
con committed
256 257
    setFrameStyle(QFrame::NoFrame);

258 259
    d->m_delayedUpdateTimer.setSingleShot(true);
    connect(&d->m_delayedUpdateTimer, SIGNAL(timeout()), viewport(), SLOT(update()));
260

mae's avatar
mae committed
261
    d->m_moveLineUndoHack = false;
con's avatar
con committed
262 263
}

264
BaseTextEditorWidget::~BaseTextEditorWidget()
con's avatar
con committed
265 266 267 268 269
{
    delete d;
    d = 0;
}

270
QString BaseTextEditorWidget::mimeType() const
con's avatar
con committed
271 272 273 274
{
    return d->m_document->mimeType();
}

275
void BaseTextEditorWidget::setMimeType(const QString &mt)
con's avatar
con committed
276 277 278 279
{
    d->m_document->setMimeType(mt);
}

280
void BaseTextEditorWidget::print(QPrinter *printer)
con's avatar
con committed
281
{
hjk's avatar
hjk committed
282
    const bool oldFullPage = printer->fullPage();
con's avatar
con committed
283 284 285
    printer->setFullPage(true);
    QPrintDialog *dlg = new QPrintDialog(printer, this);
    dlg->setWindowTitle(tr("Print Document"));
286
    if (dlg->exec() == QDialog::Accepted)
con's avatar
con committed
287 288 289 290 291
        d->print(printer);
    printer->setFullPage(oldFullPage);
    delete dlg;
}

mae's avatar
mae committed
292
static int foldBoxWidth(const QFontMetrics &fm)
293 294
{
    const int lineSpacing = fm.lineSpacing();
hjk's avatar
hjk committed
295
    return lineSpacing + lineSpacing % 2 + 1;
296 297
}

con's avatar
con committed
298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333
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();
}

334
void BaseTextEditorWidgetPrivate::print(QPrinter *printer)
con's avatar
con committed
335 336 337
{
    QTextDocument *doc = q->document();

338
    QString title = m_document->displayName();
con's avatar
con committed
339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368
    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
hjk's avatar
hjk committed
369
            for (int i = formatList.count() - 1; i >= 0; --i) {
con's avatar
con committed
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
                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;
hjk's avatar
hjk committed
411
    if (printer->collateCopies() == true) {
con's avatar
con committed
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
        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;
}


471
int BaseTextEditorWidgetPrivate::visualIndent(const QTextBlock &block) const
472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487
{
    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
488

489
ITextMarkable *BaseTextEditorWidget::markableInterface() const
con's avatar
con committed
490 491 492 493
{
    return baseTextDocument()->documentMarker();
}

494
BaseTextEditor *BaseTextEditorWidget::editor() const
con's avatar
con committed
495
{
496
    if (!d->m_editor) {
Leandro Melo's avatar
Leandro Melo committed
497 498
        d->m_editor = const_cast<BaseTextEditorWidget *>(this)->createEditor();
        d->m_codeAssistant->configure(d->m_editor);
con's avatar
con committed
499
        connect(this, SIGNAL(textChanged()),
500
                d->m_editor, SIGNAL(contentsChanged()));
501 502
        connect(qobject_cast<BaseTextDocument *>(d->m_editor->document()),SIGNAL(mimeTypeChanged()),
                d->m_codeAssistant.data(), SLOT(reconfigure()));
con's avatar
con committed
503
    }
504
    return d->m_editor;
con's avatar
con committed
505 506 507
}


508
void BaseTextEditorWidget::selectEncoding()
con's avatar
con committed
509
{
510
    BaseTextDocument *doc = d->m_document.data();
con's avatar
con committed
511 512 513
    CodecSelector codecSelector(this, doc);

    switch (codecSelector.exec()) {
514 515 516 517 518 519 520
    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
521 522
    case CodecSelector::Save:
        doc->setCodec(codecSelector.selectedCodec());
523
        Core::EditorManager::saveEditor(editor());
524
        updateTextCodecLabel();
con's avatar
con committed
525 526 527 528 529 530
        break;
    case CodecSelector::Cancel:
        break;
    }
}

531 532 533 534 535
void BaseTextEditorWidget::updateTextCodecLabel()
{
    editor()->setFileEncodingLabelText(QString::fromLatin1(d->m_document->codec()->name()));
}

536
QString BaseTextEditorWidget::msgTextTooLarge(quint64 size)
537 538 539 540 541
{
    return tr("The text is too large to be displayed (%1 MB).").
           arg(size >> 20);
}

542 543 544 545
void BaseTextEditorWidget::updateCannotDecodeInfo()
{
    setReadOnly(d->m_document->hasDecodingError());
    if (d->m_document->hasDecodingError()) {
Orgad Shaneh's avatar
Orgad Shaneh committed
546
        Core::InfoBarEntry info(Core::Id(Constants::SELECT_ENCODING),
547
            tr("<b>Error:</b> Could not decode \"%1\" with \"%2\"-encoding. Editing not possible.")
548
            .arg(d->m_document->displayName()).arg(QString::fromLatin1(d->m_document->codec()->name())));
549 550 551
        info.setCustomButtonInfo(tr("Select Encoding"), this, SLOT(selectEncoding()));
        d->m_document->infoBar()->addInfo(info);
    } else {
Orgad Shaneh's avatar
Orgad Shaneh committed
552
        d->m_document->infoBar()->removeInfo(Core::Id(Constants::SELECT_ENCODING));
553 554 555
    }
}

556
bool BaseTextEditorWidget::open(QString *errorString, const QString &fileName, const QString &realFileName)
con's avatar
con committed
557
{
558
    if (d->m_document->open(errorString, fileName, realFileName)) {
con's avatar
con committed
559
        moveCursor(QTextCursor::Start);
560
        updateCannotDecodeInfo();
561 562 563 564 565 566 567
        if (editor()->m_fileEncodingLabel) {
            connect(editor()->m_fileEncodingLabel, SIGNAL(clicked()), this,
                    SLOT(selectEncoding()), Qt::UniqueConnection);
            connect(d->m_document->document(), SIGNAL(modificationChanged(bool)), this,
                    SLOT(updateTextCodecLabel()), Qt::UniqueConnection);
            updateTextCodecLabel();
        }
con's avatar
con committed
568 569 570 571 572
        return true;
    }
    return false;
}

573 574 575
/*
  Collapses the first comment in a file, if there is only whitespace above
  */
576
void BaseTextEditorWidgetPrivate::foldLicenseHeader()
577 578
{
    QTextDocument *doc = q->document();
579
    BaseTextDocumentLayout *documentLayout = qobject_cast<BaseTextDocumentLayout*>(doc->documentLayout());
580 581
    QTC_ASSERT(documentLayout, return);
    QTextBlock block = doc->firstBlock();
582
    while (block.isValid() && block.isVisible()) {
583
        QString text = block.text();
mae's avatar
mae committed
584 585 586 587 588 589 590 591 592
        if (BaseTextDocumentLayout::canFold(block) && block.next().isVisible()) {
            if (text.trimmed().startsWith(QLatin1String("/*"))) {
                BaseTextDocumentLayout::doFoldOrUnfold(block, false);
                moveCursorVisible();
                documentLayout->requestUpdate();
                documentLayout->emitDocumentSizeChanged();
                break;
            }
        }
593
        if (TabSettings::firstNonSpace(text) < text.size())
594 595 596 597 598
            break;
        block = block.next();
    }
}

599
const Utils::ChangeSet &BaseTextEditorWidget::changeSet() const
600 601 602 603
{
    return d->m_changeSet;
}

604
void BaseTextEditorWidget::setChangeSet(const Utils::ChangeSet &changeSet)
605 606
{
    d->m_changeSet = changeSet;
Roberto Raggi's avatar
Roberto Raggi committed
607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633

    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
    }
634 635
}

636
Core::IDocument *BaseTextEditorWidget::editorDocument() const
con's avatar
con committed
637
{
638
    return d->m_document.data();
con's avatar
con committed
639 640
}

641
void BaseTextEditorWidget::editorContentsChange(int position, int charsRemoved, int charsAdded)
con's avatar
con committed
642
{
643 644 645
    if (d->m_animator)
        d->m_animator->finish();

con's avatar
con committed
646
    d->m_contentsChanged = true;
647
    QTextDocument *doc = document();
648
    BaseTextDocumentLayout *documentLayout = static_cast<BaseTextDocumentLayout*>(doc->documentLayout());
con's avatar
con committed
649 650 651

    // Keep the line numbers and the block information for the text marks updated
    if (charsRemoved != 0) {
652 653
        documentLayout->updateMarksLineNumber();
        documentLayout->updateMarksBlock(document()->findBlock(position));
con's avatar
con committed
654
    } else {
655 656
        const QTextBlock posBlock = doc->findBlock(position);
        const QTextBlock nextBlock = doc->findBlock(position + charsAdded);
con's avatar
con committed
657
        if (posBlock != nextBlock) {
658 659 660
            documentLayout->updateMarksLineNumber();
            documentLayout->updateMarksBlock(posBlock);
            documentLayout->updateMarksBlock(nextBlock);
con's avatar
con committed
661
        } else {
662
            documentLayout->updateMarksBlock(posBlock);
con's avatar
con committed
663 664
        }
    }
665

666 667 668
    if (d->m_snippetOverlay->isVisible()) {
        QTextCursor cursor = textCursor();
        cursor.setPosition(position);
669
        d->snippetCheckCursor(cursor);
670 671
    }

672
    if (doc->isRedoAvailable())
673
        emit editor()->contentsChangedBecauseOfUndo();
Leandro Melo's avatar
Leandro Melo committed
674

675
    if (charsAdded != 0 && document()->characterAt(position + charsAdded - 1).isPrint())
Leandro Melo's avatar
Leandro Melo committed
676
        d->m_assistRelevantContentAdded = true;
con's avatar
con committed
677 678
}

679
void BaseTextEditorWidget::slotSelectionChanged()
con's avatar
con committed
680
{
mae's avatar
mae committed
681 682 683
    if (d->m_inBlockSelectionMode && !textCursor().hasSelection()) {
        d->m_inBlockSelectionMode = false;
        d->m_blockSelection.clear();
con's avatar
con committed
684
        viewport()->update();
mae's avatar
mae committed
685 686
    }

687 688
    if (!d->m_selectBlockAnchor.isNull() && !textCursor().hasSelection())
        d->m_selectBlockAnchor = QTextCursor();
689 690 691

    // Clear any link which might be showing when the selection changes
    clearLink();
con's avatar
con committed
692 693
}

694
void BaseTextEditorWidget::gotoBlockStart()
695 696
{
    QTextCursor cursor = textCursor();
697
    if (TextBlockUserData::findPreviousOpenParenthesis(&cursor, false)) {
698
        setTextCursor(cursor);
699 700
        _q_matchParentheses();
    }
701 702
}

703
void BaseTextEditorWidget::gotoBlockEnd()
704 705
{
    QTextCursor cursor = textCursor();
706
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, false)) {
707
        setTextCursor(cursor);
708 709
        _q_matchParentheses();
    }
710 711
}

712
void BaseTextEditorWidget::gotoBlockStartWithSelection()
713 714
{
    QTextCursor cursor = textCursor();
715
    if (TextBlockUserData::findPreviousOpenParenthesis(&cursor, true)) {
716
        setTextCursor(cursor);
717 718
        _q_matchParentheses();
    }
719 720
}

721
void BaseTextEditorWidget::gotoBlockEndWithSelection()
722 723
{
    QTextCursor cursor = textCursor();
724
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, true)) {
725
        setTextCursor(cursor);
726 727 728 729
        _q_matchParentheses();
    }
}

mae's avatar
mae committed
730

731
void BaseTextEditorWidget::gotoLineStart()
mae's avatar
mae committed
732 733 734 735
{
    handleHomeKey(false);
}

736
void BaseTextEditorWidget::gotoLineStartWithSelection()
mae's avatar
mae committed
737 738 739 740
{
    handleHomeKey(true);
}

741
void BaseTextEditorWidget::gotoLineEnd()
mae's avatar
mae committed
742 743 744 745
{
    moveCursor(QTextCursor::EndOfLine);
}

746
void BaseTextEditorWidget::gotoLineEndWithSelection()
mae's avatar
mae committed
747 748 749 750
{
    moveCursor(QTextCursor::EndOfLine, QTextCursor::KeepAnchor);
}

751
void BaseTextEditorWidget::gotoNextLine()
mae's avatar
mae committed
752
{
753
    moveCursor(QTextCursor::Down);
mae's avatar
mae committed
754 755
}

756
void BaseTextEditorWidget::gotoNextLineWithSelection()
mae's avatar
mae committed
757
{
758
    moveCursor(QTextCursor::Down, QTextCursor::KeepAnchor);
mae's avatar
mae committed
759 760
}

761
void BaseTextEditorWidget::gotoPreviousLine()
mae's avatar
mae committed
762
{
763
    moveCursor(QTextCursor::Up);
mae's avatar
mae committed
764 765
}

766
void BaseTextEditorWidget::gotoPreviousLineWithSelection()
mae's avatar
mae committed
767
{
768
    moveCursor(QTextCursor::Up, QTextCursor::KeepAnchor);
mae's avatar
mae committed
769 770
}

771
void BaseTextEditorWidget::gotoPreviousCharacter()
mae's avatar
mae committed
772 773 774 775
{
    moveCursor(QTextCursor::PreviousCharacter);
}

776
void BaseTextEditorWidget::gotoPreviousCharacterWithSelection()
mae's avatar
mae committed
777 778 779 780
{
    moveCursor(QTextCursor::PreviousCharacter, QTextCursor::KeepAnchor);
}

781
void BaseTextEditorWidget::gotoNextCharacter()
mae's avatar
mae committed
782 783 784 785
{
    moveCursor(QTextCursor::NextCharacter);
}

786
void BaseTextEditorWidget::gotoNextCharacterWithSelection()
mae's avatar
mae committed
787 788 789 790
{
    moveCursor(QTextCursor::NextCharacter, QTextCursor::KeepAnchor);
}

791
void BaseTextEditorWidget::gotoPreviousWord()
mae's avatar
mae committed
792 793
{
    moveCursor(QTextCursor::PreviousWord);
794
    setTextCursor(textCursor());
mae's avatar
mae committed
795 796
}

797
void BaseTextEditorWidget::gotoPreviousWordWithSelection()
mae's avatar
mae committed
798 799
{
    moveCursor(QTextCursor::PreviousWord, QTextCursor::KeepAnchor);
800
    setTextCursor(textCursor());
mae's avatar
mae committed
801 802
}

803
void BaseTextEditorWidget::gotoNextWord()
mae's avatar
mae committed
804 805
{
    moveCursor(QTextCursor::NextWord);
806
    setTextCursor(textCursor());
mae's avatar
mae committed
807 808
}

809
void BaseTextEditorWidget::gotoNextWordWithSelection()
mae's avatar
mae committed
810 811
{
    moveCursor(QTextCursor::NextWord, QTextCursor::KeepAnchor);
812
    setTextCursor(textCursor());
mae's avatar
mae committed
813 814
}

815
void BaseTextEditorWidget::gotoPreviousWordCamelCase()
mae's avatar
mae committed
816 817 818 819 820 821
{
    QTextCursor c = textCursor();
    camelCaseLeft(c, QTextCursor::MoveAnchor);
    setTextCursor(c);
}

822
void BaseTextEditorWidget::gotoPreviousWordCamelCaseWithSelection()
mae's avatar
mae committed
823 824 825 826 827 828
{
    QTextCursor c = textCursor();
    camelCaseLeft(c, QTextCursor::KeepAnchor);
    setTextCursor(c);
}

829
void BaseTextEditorWidget::gotoNextWordCamelCase()
mae's avatar
mae committed
830 831 832 833 834 835
{
    QTextCursor c = textCursor();
    camelCaseRight(c, QTextCursor::MoveAnchor);
    setTextCursor(c);
}

836
void BaseTextEditorWidget::gotoNextWordCamelCaseWithSelection()
mae's avatar
mae committed
837 838 839 840 841 842
{
    QTextCursor c = textCursor();
    camelCaseRight(c, QTextCursor::KeepAnchor);
    setTextCursor(c);
}

843 844
static QTextCursor flippedCursor(const QTextCursor &cursor)
{
845 846 847 848
    QTextCursor flipped = cursor;
    flipped.clearSelection();
    flipped.setPosition(cursor.anchor(), QTextCursor::KeepAnchor);
    return flipped;
849 850
}

851
bool BaseTextEditorWidget::selectBlockUp()
852 853 854 855 856 857 858 859
{
    QTextCursor cursor = textCursor();
    if (!cursor.hasSelection())
        d->m_selectBlockAnchor = cursor;
    else
        cursor.setPosition(cursor.selectionStart());

    if (!TextBlockUserData::findPreviousOpenParenthesis(&cursor, false))
860
        return false;
861
    if (!TextBlockUserData::findNextClosingParenthesis(&cursor, true))
862 863
        return false;

864 865
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
866
    return true;
867 868
}

869
bool BaseTextEditorWidget::selectBlockDown()
870 871 872 873 874
{
    QTextCursor tc = textCursor();
    QTextCursor cursor = d->m_selectBlockAnchor;

    if (!tc.hasSelection() || cursor.isNull())
875
        return false;
876 877 878 879 880 881 882 883 884 885 886 887 888
    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);

889 890
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
891
    return true;
892 893
}

894
void BaseTextEditorWidget::copyLineUp()
895 896 897 898
{
    copyLineUpDown(true);
}

899
void BaseTextEditorWidget::copyLineDown()
900 901 902 903
{
    copyLineUpDown(false);
}

904
// @todo: Potential reuse of some code around the following functions...
905
void BaseTextEditorWidget::copyLineUpDown(bool up)
906 907 908 909 910 911 912 913 914 915 916
{
    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);
917 918
        move.movePosition(move.atBlockStart() ? QTextCursor::Left: QTextCursor::EndOfBlock,
                          QTextCursor::KeepAnchor);
919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955
    } 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);
}

956
void BaseTextEditorWidget::joinLines()
957
{
958 959 960
    QTextCursor cursor = textCursor();
    QTextCursor start = cursor;
    QTextCursor end = cursor;
961

962 963
    start.setPosition(cursor.selectionStart());
    end.setPosition(cursor.selectionEnd() - 1);
964

965
    int lineCount = qMax(1, end.blockNumber() - start.blockNumber());
966

967 968 969 970 971 972 973
    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();
974

975
        // Collapse leading whitespaces to one or insert whitespace
976
        cutLine.replace(QRegExp(QLatin1String("^\\s*")), QLatin1String(" "));
977 978 979 980 981 982 983 984 985 986 987
        cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor);
        cursor.removeSelectedText();

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

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

    setTextCursor(cursor);
988 989
}

990
void BaseTextEditorWidget::insertLineAbove()
991 992 993
{
    QTextCursor cursor = textCursor();
    cursor.beginEditBlock();
994 995 996
    // 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);
997
    cursor.insertBlock();
998
    cursor.movePosition(QTextCursor::PreviousBlock, QTextCursor::MoveAnchor);
999 1000 1001 1002 1003
    indent(document(), cursor, QChar::Null);
    cursor.endEditBlock();
    setTextCursor(cursor);
}

1004
void BaseTextEditorWidget::insertLineBelow()
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
{
    QTextCursor cursor = textCursor();
    cursor.beginEditBlock();
    cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::MoveAnchor);
    cursor.insertBlock();
    indent(document(), cursor, QChar::Null);
    cursor.endEditBlock();
    setTextCursor(cursor);
}

1015
void BaseTextEditorWidget::moveLineUp()
1016 1017 1018 1019
{
    moveLineUpDown(true);
}

1020
void BaseTextEditorWidget::moveLineDown()
1021 1022 1023 1024
{
    moveLineUpDown(false);
}

1025 1026 1027 1028 1029 1030 1031 1032 1033 1034
void BaseTextEditorWidget::uppercaseSelection()
{
    transformSelection(&QString::toUpper);
}

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

1035 1036 1037 1038 1039 1040 1041 1042 1043 1044
void BaseTextEditorWidget::indent()
{
    indentOrUnindent(true);
}

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

1045 1046
void BaseTextEditorWidget::openLinkUnderCursor()
{
1047 1048 1049
    const bool openInNextSplit = alwaysOpenLinksInNextSplit();
    Link symbolLink = findLinkAt(textCursor(), true, openInNextSplit);
    openLink(symbolLink, openInNextSplit);