basefilefind.cpp 16 KB
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/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of Qt Creator.
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**
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** 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.
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**
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** GNU Lesser General Public License Usage
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** 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
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
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****************************************************************************/
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#include "basefilefind.h"
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#include "basefilefind_p.h"
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#include <aggregation/aggregate.h>
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#include <coreplugin/icore.h>
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#include <coreplugin/progressmanager/progressmanager.h>
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#include <coreplugin/progressmanager/futureprogress.h>
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#include <coreplugin/documentmanager.h>
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#include <texteditor/basetexteditor.h>
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#include <texteditor/refactoringchanges.h>
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#include <utils/stylehelper.h>
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#include <utils/qtcassert.h>
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#include <utils/filesearch.h>
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#include <QDebug>
#include <QSettings>
#include <QHash>
#include <QPair>
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#include <QStringListModel>
#include <QFutureWatcher>
#include <QPointer>
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#include <QComboBox>
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#include <QLabel>
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#include <QLabel>
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namespace TextEditor {
namespace Internal {
class BaseFileFindPrivate {
public:
    BaseFileFindPrivate() : m_resultLabel(0), m_filterCombo(0) {}

    QMap<QFutureWatcher<Utils::FileSearchResultList> *, QPointer<Find::SearchResult> > m_watchers;
    QPointer<Find::IFindSupport> m_currentFindSupport;

    QLabel *m_resultLabel;
    QStringListModel m_filterStrings;
    QString m_filterSetting;
    QPointer<QComboBox> m_filterCombo;
};
} // namespace Internal
} // namespace TextEditor

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using namespace Utils;
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using namespace Find;
using namespace TextEditor;
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using namespace TextEditor::Internal;
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BaseFileFind::BaseFileFind() : d(new BaseFileFindPrivate)
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{
}

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BaseFileFind::~BaseFileFind()
{
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    delete d;
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}

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bool BaseFileFind::isEnabled() const
{
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    return true;
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}

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void BaseFileFind::cancel()
{
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    SearchResult *search = qobject_cast<SearchResult *>(sender());
    QTC_ASSERT(search, return);
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    QFutureWatcher<FileSearchResultList> *watcher = d->m_watchers.key(search);
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    QTC_ASSERT(watcher, return);
    watcher->cancel();
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}

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void BaseFileFind::setPaused(bool paused)
{
    SearchResult *search = qobject_cast<SearchResult *>(sender());
    QTC_ASSERT(search, return);
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    QFutureWatcher<FileSearchResultList> *watcher = d->m_watchers.key(search);
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    QTC_ASSERT(watcher, return);
    if (!paused || watcher->isRunning()) // guard against pausing when the search is finished
        watcher->setPaused(paused);
}

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QStringList BaseFileFind::fileNameFilters() const
{
    QStringList filters;
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    if (d->m_filterCombo && !d->m_filterCombo->currentText().isEmpty()) {
        const QStringList parts = d->m_filterCombo->currentText().split(QLatin1Char(','));
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        foreach (const QString &part, parts) {
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            const QString filter = part.trimmed();
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            if (!filter.isEmpty())
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                filters << filter;
        }
    }
    return filters;
}

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void BaseFileFind::runNewSearch(const QString &txt, Find::FindFlags findFlags,
                                    SearchResultWindow::SearchMode searchMode)
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{
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    d->m_currentFindSupport = 0;
    if (d->m_filterCombo)
        updateComboEntries(d->m_filterCombo, true);
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    SearchResult *search = Find::SearchResultWindow::instance()->startNewSearch(label(),
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                           toolTip().arg(Find::IFindFilter::descriptionForFindFlags(findFlags)),
                           txt, searchMode, QString::fromLatin1("TextEditor"));
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    search->setTextToReplace(txt);
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    search->setSearchAgainSupported(true);
    FileFindParameters parameters;
    parameters.text = txt;
    parameters.flags = findFlags;
    parameters.nameFilters = fileNameFilters();
    parameters.additionalParameters = additionalParameters();
    search->setUserData(qVariantFromValue(parameters));
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    connect(search, SIGNAL(activated(Find::SearchResultItem)), this, SLOT(openEditor(Find::SearchResultItem)));
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    if (searchMode == SearchResultWindow::SearchAndReplace) {
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        connect(search, SIGNAL(replaceButtonClicked(QString,QList<Find::SearchResultItem>,bool)),
                this, SLOT(doReplace(QString,QList<Find::SearchResultItem>,bool)));
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    }
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    connect(search, SIGNAL(visibilityChanged(bool)), this, SLOT(hideHighlightAll(bool)));
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    connect(search, SIGNAL(cancelled()), this, SLOT(cancel()));
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    connect(search, SIGNAL(paused(bool)), this, SLOT(setPaused(bool)));
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    connect(search, SIGNAL(searchAgainRequested()), this, SLOT(searchAgain()));
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    connect(this, SIGNAL(enabledChanged(bool)), search, SIGNAL(requestEnabledCheck()));
    connect(search, SIGNAL(requestEnabledCheck()), this, SLOT(recheckEnabled()));

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    runSearch(search);
}

void BaseFileFind::runSearch(Find::SearchResult *search)
{
    FileFindParameters parameters = search->userData().value<FileFindParameters>();
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    CountingLabel *label = new CountingLabel;
    connect(search, SIGNAL(countChanged(int)), label, SLOT(updateCount(int)));
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    Find::SearchResultWindow::instance()->popup(Core::IOutputPane::Flags(Core::IOutputPane::ModeSwitch | Core::IOutputPane::WithFocus));
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    QFutureWatcher<FileSearchResultList> *watcher = new QFutureWatcher<FileSearchResultList>();
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    d->m_watchers.insert(watcher, search);
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    watcher->setPendingResultsLimit(1);
    connect(watcher, SIGNAL(resultReadyAt(int)), this, SLOT(displayResult(int)));
    connect(watcher, SIGNAL(finished()), this, SLOT(searchFinished()));
    if (parameters.flags & Find::FindRegularExpression) {
        watcher->setFuture(Utils::findInFilesRegExp(parameters.text,
            files(parameters.nameFilters, parameters.additionalParameters),
            textDocumentFlagsForFindFlags(parameters.flags),
            ITextEditor::openedTextEditorsContents()));
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    } else {
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        watcher->setFuture(Utils::findInFiles(parameters.text,
            files(parameters.nameFilters, parameters.additionalParameters),
            textDocumentFlagsForFindFlags(parameters.flags),
            ITextEditor::openedTextEditorsContents()));
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    }
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    Core::FutureProgress *progress =
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        Core::ICore::progressManager()->addTask(watcher->future(),
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                                                                        tr("Search"),
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                                                                        QLatin1String(Constants::TASK_SEARCH));
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    progress->setWidget(label);
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    connect(progress, SIGNAL(clicked()), search, SLOT(popup()));
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}

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void BaseFileFind::findAll(const QString &txt, Find::FindFlags findFlags)
{
    runNewSearch(txt, findFlags, SearchResultWindow::SearchOnly);
}

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void BaseFileFind::replaceAll(const QString &txt, Find::FindFlags findFlags)
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{
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    runNewSearch(txt, findFlags, SearchResultWindow::SearchAndReplace);
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}

void BaseFileFind::doReplace(const QString &text,
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                             const QList<Find::SearchResultItem> &items,
                             bool preserveCase)
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{
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    QStringList files = replaceAll(text, items, preserveCase);
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    if (!files.isEmpty()) {
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        Core::DocumentManager::notifyFilesChangedInternally(files);
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        Find::SearchResultWindow::instance()->hide();
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    }
}

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void BaseFileFind::displayResult(int index) {
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    QFutureWatcher<FileSearchResultList> *watcher =
            static_cast<QFutureWatcher<FileSearchResultList> *>(sender());
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    SearchResult *search = d->m_watchers.value(watcher);
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    if (!search) {
        // search was removed from search history while the search is running
        watcher->cancel();
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        return;
    }
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    Utils::FileSearchResultList results = watcher->resultAt(index);
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    QList<Find::SearchResultItem> items;
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    foreach (const Utils::FileSearchResult &result, results) {
        Find::SearchResultItem item;
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        item.path = QStringList() << QDir::toNativeSeparators(result.fileName);
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        item.lineNumber = result.lineNumber;
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        item.text = result.matchingLine;
        item.textMarkLength = result.matchLength;
        item.textMarkPos = result.matchStart;
        item.useTextEditorFont = true;
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        item.userData = result.regexpCapturedTexts;
        items << item;
    }
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    search->addResults(items, Find::SearchResult::AddOrdered);
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}

void BaseFileFind::searchFinished()
{
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    QFutureWatcher<FileSearchResultList> *watcher =
            static_cast<QFutureWatcher<FileSearchResultList> *>(sender());
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    SearchResult *search = d->m_watchers.value(watcher);
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    if (search)
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        search->finishSearch(watcher->isCanceled());
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    d->m_watchers.remove(watcher);
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    watcher->deleteLater();
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}

QWidget *BaseFileFind::createPatternWidget()
{
    QString filterToolTip = tr("List of comma separated wildcard filters");
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    d->m_filterCombo = new QComboBox;
    d->m_filterCombo->setEditable(true);
    d->m_filterCombo->setModel(&d->m_filterStrings);
    d->m_filterCombo->setMaxCount(10);
    d->m_filterCombo->setMinimumContentsLength(10);
    d->m_filterCombo->setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLengthWithIcon);
    d->m_filterCombo->setInsertPolicy(QComboBox::InsertAtBottom);
    d->m_filterCombo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    d->m_filterCombo->setToolTip(filterToolTip);
    syncComboWithSettings(d->m_filterCombo, d->m_filterSetting);
    return d->m_filterCombo;
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}

void BaseFileFind::writeCommonSettings(QSettings *settings)
{
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    settings->setValue(QLatin1String("filters"), d->m_filterStrings.stringList());
    if (d->m_filterCombo)
        settings->setValue(QLatin1String("currentFilter"), d->m_filterCombo->currentText());
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}

void BaseFileFind::readCommonSettings(QSettings *settings, const QString &defaultFilter)
{
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    QStringList filters = settings->value(QLatin1String("filters")).toStringList();
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    d->m_filterSetting = settings->value(QLatin1String("currentFilter")).toString();
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    if (filters.isEmpty())
        filters << defaultFilter;
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    if (d->m_filterSetting.isEmpty())
        d->m_filterSetting = filters.first();
    d->m_filterStrings.setStringList(filters);
    if (d->m_filterCombo)
        syncComboWithSettings(d->m_filterCombo, d->m_filterSetting);
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}

void BaseFileFind::syncComboWithSettings(QComboBox *combo, const QString &setting)
{
    if (!combo)
        return;
    int index = combo->findText(setting);
    if (index < 0)
        combo->setEditText(setting);
    else
        combo->setCurrentIndex(index);
}

void BaseFileFind::updateComboEntries(QComboBox *combo, bool onTop)
{
    int index = combo->findText(combo->currentText());
    if (index < 0) {
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        if (onTop)
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            combo->insertItem(0, combo->currentText());
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        else
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            combo->addItem(combo->currentText());
        combo->setCurrentIndex(combo->findText(combo->currentText()));
    }
}

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void BaseFileFind::openEditor(const Find::SearchResultItem &item)
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{
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    SearchResult *result = qobject_cast<SearchResult *>(sender());
    Core::IEditor *openedEditor = 0;
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    if (item.path.size() > 0) {
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        openedEditor = TextEditor::BaseTextEditorWidget::openEditorAt(QDir::fromNativeSeparators(item.path.first()),
                                                                      item.lineNumber,
                                                                      item.textMarkPos,
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                                                                      Core::Id(),
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                                                                      Core::EditorManager::ModeSwitch);
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    } else {
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        openedEditor = Core::EditorManager::openEditor(QDir::fromNativeSeparators(item.text),
                                                        Core::Id(), Core::EditorManager::ModeSwitch);
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    }
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    if (d->m_currentFindSupport)
        d->m_currentFindSupport->clearResults();
    d->m_currentFindSupport = 0;
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    if (!openedEditor)
        return;
    // highlight results
    if (IFindSupport *findSupport = Aggregation::query<IFindSupport>(openedEditor->widget())) {
        if (result) {
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            FileFindParameters parameters = result->userData().value<FileFindParameters>();
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            d->m_currentFindSupport = findSupport;
            d->m_currentFindSupport->highlightAll(parameters.text, parameters.flags);
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        }
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    }
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}
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void BaseFileFind::hideHighlightAll(bool visible)
{
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    if (!visible && d->m_currentFindSupport)
        d->m_currentFindSupport->clearResults();
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}

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void BaseFileFind::searchAgain()
{
    SearchResult *search = qobject_cast<SearchResult *>(sender());
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    search->restart();
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    runSearch(search);
}

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void BaseFileFind::recheckEnabled()
{
    SearchResult *search = qobject_cast<SearchResult *>(sender());
    if (!search)
        return;
    search->setSearchAgainEnabled(isEnabled());
}

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QStringList BaseFileFind::replaceAll(const QString &text,
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                                     const QList<Find::SearchResultItem> &items,
                                     bool preserveCase)
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{
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    if (items.isEmpty())
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        return QStringList();

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    RefactoringChanges refactoring;
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    QHash<QString, QList<Find::SearchResultItem> > changes;
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    foreach (const Find::SearchResultItem &item, items)
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        changes[QDir::fromNativeSeparators(item.path.first())].append(item);
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    QHashIterator<QString, QList<Find::SearchResultItem> > it(changes);
    while (it.hasNext()) {
        it.next();
        const QString fileName = it.key();
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        const QList<Find::SearchResultItem> changeItems = it.value();
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        ChangeSet changeSet;
        RefactoringFilePtr file = refactoring.file(fileName);
        QSet<QPair<int, int> > processed;
        foreach (const Find::SearchResultItem &item, changeItems) {
            const QPair<int, int> &p = qMakePair(item.lineNumber, item.textMarkPos);
            if (processed.contains(p))
                continue;
            processed.insert(p);

            QString replacement;
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            if (item.userData.canConvert<QStringList>() && !item.userData.toStringList().isEmpty()) {
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                replacement = Utils::expandRegExpReplacement(text, item.userData.toStringList());
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            } else if (preserveCase) {
                const QString originalText = (item.textMarkLength == 0) ? item.text
                                                                        : item.text.mid(item.textMarkPos, item.textMarkLength);
                replacement = Utils::matchCaseReplacement(originalText, text);
            } else {
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                replacement = text;
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            }
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            const int start = file->position(item.lineNumber, item.textMarkPos + 1);
            const int end = file->position(item.lineNumber,
                                           item.textMarkPos + item.textMarkLength + 1);
            changeSet.replace(start, end, replacement);
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        }
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        file->setChangeSet(changeSet);
        file->apply();
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    }

    return changes.keys();
}
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QVariant BaseFileFind::getAdditionalParameters(SearchResult *search)
{
    return search->userData().value<FileFindParameters>().additionalParameters;
}

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CountingLabel::CountingLabel()
{
    setAlignment(Qt::AlignCenter);
    // ### TODO this setup should be done by style
    QFont f = font();
    f.setBold(true);
    f.setPointSizeF(StyleHelper::sidebarFontSize());
    setFont(f);
    setPalette(StyleHelper::sidebarFontPalette(palette()));
    updateCount(0);
}

void CountingLabel::updateCount(int count)
{
    setText(tr("%1 found").arg(count));
}