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Merge pull request #11085 from jherico/script_console_crash

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Fix for potential crash in JS console
This commit is contained in:
Brad Hefta-Gaub 2017-08-04 11:44:20 -07:00 committed by GitHub
commit 0d0a1af166
4 changed files with 45 additions and 44 deletions
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69
interface/src/ui/JSConsole.cpp
View file

@ -9,6 +9,8 @@
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#include "JSConsole.h"
#include <QFuture>
#include <QKeyEvent>
#include <QLabel>
@ -20,7 +22,6 @@
#include <PathUtils.h>
#include "Application.h"
#include "JSConsole.h"
#include "ScriptHighlighting.h"
const int NO_CURRENT_HISTORY_COMMAND = -1;
@ -60,14 +61,12 @@ void _writeLines(const QString& filename, const QList<QString>& lines) {
QTextStream(&file) << json;
}
JSConsole::JSConsole(QWidget* parent, ScriptEngine* scriptEngine) :
JSConsole::JSConsole(QWidget* parent, const QSharedPointer<ScriptEngine>& scriptEngine) :
QWidget(parent),
_ui(new Ui::Console),
_currentCommandInHistory(NO_CURRENT_HISTORY_COMMAND),
_savedHistoryFilename(QStandardPaths::writableLocation(QStandardPaths::DataLocation) + "/" + HISTORY_FILENAME),
_commandHistory(_readLines(_savedHistoryFilename)),
_ownScriptEngine(scriptEngine == NULL),
_scriptEngine(NULL) {
_commandHistory(_readLines(_savedHistoryFilename)) {
_ui->setupUi(this);
_ui->promptTextEdit->setLineWrapMode(QTextEdit::NoWrap);
_ui->promptTextEdit->setWordWrapMode(QTextOption::NoWrap);
@ -90,36 +89,37 @@ JSConsole::JSConsole(QWidget* parent, ScriptEngine* scriptEngine) :
}
JSConsole::~JSConsole() {
disconnect(_scriptEngine, SIGNAL(printedMessage(const QString&)), this, SLOT(handlePrint(const QString&)));
disconnect(_scriptEngine, SIGNAL(errorMessage(const QString&)), this, SLOT(handleError(const QString&)));
if (_ownScriptEngine) {
_scriptEngine->deleteLater();
if (_scriptEngine) {
disconnect(_scriptEngine.data(), SIGNAL(printedMessage(const QString&)), this, SLOT(handlePrint(const QString&)));
disconnect(_scriptEngine.data(), SIGNAL(errorMessage(const QString&)), this, SLOT(handleError(const QString&)));
_scriptEngine.reset();
}
delete _ui;
}
void JSConsole::setScriptEngine(ScriptEngine* scriptEngine) {
void JSConsole::setScriptEngine(const QSharedPointer<ScriptEngine>& scriptEngine) {
if (_scriptEngine == scriptEngine && scriptEngine != NULL) {
return;
}
if (_scriptEngine != NULL) {
disconnect(_scriptEngine, &ScriptEngine::printedMessage, this, &JSConsole::handlePrint);
disconnect(_scriptEngine, &ScriptEngine::infoMessage, this, &JSConsole::handleInfo);
disconnect(_scriptEngine, &ScriptEngine::warningMessage, this, &JSConsole::handleWarning);
disconnect(_scriptEngine, &ScriptEngine::errorMessage, this, &JSConsole::handleError);
if (_ownScriptEngine) {
_scriptEngine->deleteLater();
}
disconnect(_scriptEngine.data(), &ScriptEngine::printedMessage, this, &JSConsole::handlePrint);
disconnect(_scriptEngine.data(), &ScriptEngine::infoMessage, this, &JSConsole::handleInfo);
disconnect(_scriptEngine.data(), &ScriptEngine::warningMessage, this, &JSConsole::handleWarning);
disconnect(_scriptEngine.data(), &ScriptEngine::errorMessage, this, &JSConsole::handleError);
_scriptEngine.reset();
}
// if scriptEngine is NULL then create one and keep track of it using _ownScriptEngine
_ownScriptEngine = (scriptEngine == NULL);
_scriptEngine = _ownScriptEngine ? DependencyManager::get<ScriptEngines>()->loadScript(_consoleFileName, false) : scriptEngine;
if (scriptEngine.isNull()) {
_scriptEngine = QSharedPointer<ScriptEngine>(DependencyManager::get<ScriptEngines>()->loadScript(_consoleFileName, false), &QObject::deleteLater);
} else {
_scriptEngine = scriptEngine;
}
connect(_scriptEngine, &ScriptEngine::printedMessage, this, &JSConsole::handlePrint);
connect(_scriptEngine, &ScriptEngine::infoMessage, this, &JSConsole::handleInfo);
connect(_scriptEngine, &ScriptEngine::warningMessage, this, &JSConsole::handleWarning);
connect(_scriptEngine, &ScriptEngine::errorMessage, this, &JSConsole::handleError);
connect(_scriptEngine.data(), &ScriptEngine::printedMessage, this, &JSConsole::handlePrint);
connect(_scriptEngine.data(), &ScriptEngine::infoMessage, this, &JSConsole::handleInfo);
connect(_scriptEngine.data(), &ScriptEngine::warningMessage, this, &JSConsole::handleWarning);
connect(_scriptEngine.data(), &ScriptEngine::errorMessage, this, &JSConsole::handleError);
}
void JSConsole::executeCommand(const QString& command) {
@ -135,19 +135,22 @@ void JSConsole::executeCommand(const QString& command) {
appendMessage(">", "<span style='" + COMMAND_STYLE + "'>" + command.toHtmlEscaped() + "</span>");
QFuture<QScriptValue> future = QtConcurrent::run(this, &JSConsole::executeCommandInWatcher, command);
QWeakPointer<ScriptEngine> weakScriptEngine = _scriptEngine;
auto consoleFileName = _consoleFileName;
QFuture<QScriptValue> future = QtConcurrent::run([weakScriptEngine, consoleFileName, command]()->QScriptValue{
QScriptValue result;
auto scriptEngine = weakScriptEngine.lock();
if (scriptEngine) {
BLOCKING_INVOKE_METHOD(scriptEngine.data(), "evaluate",
Q_RETURN_ARG(QScriptValue, result),
Q_ARG(const QString&, command),
Q_ARG(const QString&, consoleFileName));
}
return result;
});
_executeWatcher.setFuture(future);
}
QScriptValue JSConsole::executeCommandInWatcher(const QString& command) {
QScriptValue result;
BLOCKING_INVOKE_METHOD(_scriptEngine, "evaluate",
Q_RETURN_ARG(QScriptValue, result),
Q_ARG(const QString&, command),
Q_ARG(const QString&, _consoleFileName));
return result;
}
void JSConsole::commandFinished() {
QScriptValue result = _executeWatcher.result();

10
interface/src/ui/JSConsole.h
View file

@ -17,6 +17,7 @@
#include <QFutureWatcher>
#include <QObject>
#include <QWidget>
#include <QSharedPointer>
#include "ui_console.h"
#include "ScriptEngine.h"
@ -29,10 +30,10 @@ const int CONSOLE_HEIGHT = 200;
class JSConsole : public QWidget {
Q_OBJECT
public:
JSConsole(QWidget* parent, ScriptEngine* scriptEngine = NULL);
JSConsole(QWidget* parent, const QSharedPointer<ScriptEngine>& scriptEngine = QSharedPointer<ScriptEngine>());
~JSConsole();
void setScriptEngine(ScriptEngine* scriptEngine = NULL);
void setScriptEngine(const QSharedPointer<ScriptEngine>& scriptEngine = QSharedPointer<ScriptEngine>());
void clear();
public slots:
@ -58,17 +59,14 @@ private:
void setToNextCommandInHistory();
void setToPreviousCommandInHistory();
void resetCurrentCommandHistory();
QScriptValue executeCommandInWatcher(const QString& command);
QFutureWatcher<QScriptValue> _executeWatcher;
Ui::Console* _ui;
int _currentCommandInHistory;
QString _savedHistoryFilename;
QList<QString> _commandHistory;
// Keeps track if the script engine is created inside the JSConsole
bool _ownScriptEngine;
QString _rootCommand;
ScriptEngine* _scriptEngine;
QSharedPointer<ScriptEngine> _scriptEngine;
static const QString _consoleFileName;
};

8
interface/src/ui/TestingDialog.cpp
View file

@ -24,12 +24,12 @@ TestingDialog::TestingDialog(QWidget* parent) :
_console->setFixedHeight(TESTING_CONSOLE_HEIGHT);
auto _engines = DependencyManager::get<ScriptEngines>();
_engine = _engines->loadScript(qApp->applicationDirPath() + testRunnerRelativePath);
_engine.reset(_engines->loadScript(qApp->applicationDirPath() + testRunnerRelativePath));
_console->setScriptEngine(_engine);
connect(_engine, &ScriptEngine::finished, this, &TestingDialog::onTestingFinished);
connect(_engine.data(), &ScriptEngine::finished, this, &TestingDialog::onTestingFinished);
}
void TestingDialog::onTestingFinished(const QString& scriptPath) {
_engine = nullptr;
_console->setScriptEngine(nullptr);
_engine.reset();
_console->setScriptEngine();
}

2
interface/src/ui/TestingDialog.h
View file

@ -29,7 +29,7 @@ public:
private:
std::unique_ptr<JSConsole> _console;
ScriptEngine* _engine;
QSharedPointer<ScriptEngine> _engine;
};
#endif