////  ScriptEditorWidget.cpp//  interface/src/ui////  Created by Thijs Wenker on 4/14/14.//  Copyright 2014 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "ui_scriptEditorWidget.h"#include "ScriptEditorWidget.h" #include <QGridLayout>#include <QFrame>#include <QLayoutItem>#include <QMainWindow>#include <QMessageBox>#include <QPalette>#include <QScrollBar>#include <QSizePolicy>#include <QTimer>#include <QWidget> #include <NetworkAccessManager.h> #include "Application.h"#include "ScriptHighlighting.h" ScriptEditorWidget::ScriptEditorWidget() :    _scriptEditorWidgetUI(new Ui::ScriptEditorWidget),    _scriptEngine(NULL),    _isRestarting(false),    _isReloading(false){    setAttribute(Qt::WA_DeleteOnClose);     _scriptEditorWidgetUI->setupUi(this);     connect(_scriptEditorWidgetUI->scriptEdit->document(), &QTextDocument::modificationChanged, this,            &ScriptEditorWidget::scriptModified);    connect(_scriptEditorWidgetUI->scriptEdit->document(), &QTextDocument::contentsChanged, this,            &ScriptEditorWidget::onScriptModified);     // remove the title bar (see the Qt docs on setTitleBarWidget)    setTitleBarWidget(new QWidget());    QFontMetrics fm(_scriptEditorWidgetUI->scriptEdit->font());    _scriptEditorWidgetUI->scriptEdit->setTabStopWidth(fm.width('0') * 4);    // We create a new ScriptHighligting QObject and provide it with a parent so this is NOT a memory leak.    new ScriptHighlighting(_scriptEditorWidgetUI->scriptEdit->document());    QTimer::singleShot(0, _scriptEditorWidgetUI->scriptEdit, SLOT(setFocus()));} ScriptEditorWidget::~ScriptEditorWidget() {    delete _scriptEditorWidgetUI;} void ScriptEditorWidget::onScriptModified() {    if(_scriptEditorWidgetUI->onTheFlyCheckBox->isChecked() && isModified() && isRunning() && !_isReloading) {        _isRestarting = true;        setRunning(false);        // Script is restarted once current script instance finishes.    }} void ScriptEditorWidget::onScriptFinished(const QString& scriptPath) {    _scriptEngine = NULL;    if (_isRestarting) {        _isRestarting = false;        setRunning(true);    }} bool ScriptEditorWidget::isModified() {    return _scriptEditorWidgetUI->scriptEdit->document()->isModified();} bool ScriptEditorWidget::isRunning() {    return (_scriptEngine != NULL) ? _scriptEngine->isRunning() : false;} bool ScriptEditorWidget::setRunning(bool run) {    if (run && isModified() && !save()) {        return false;    }     if (_scriptEngine != NULL) {        disconnect(_scriptEngine, &ScriptEngine::runningStateChanged, this, &ScriptEditorWidget::runningStateChanged);        disconnect(_scriptEngine, &ScriptEngine::errorMessage, this, &ScriptEditorWidget::onScriptError);        disconnect(_scriptEngine, &ScriptEngine::printedMessage, this, &ScriptEditorWidget::onScriptPrint);        disconnect(_scriptEngine, &ScriptEngine::update, this, &ScriptEditorWidget::onScriptModified);        disconnect(_scriptEngine, &ScriptEngine::finished, this, &ScriptEditorWidget::onScriptFinished);    }     if (run) {        const QString& scriptURLString = QUrl(_currentScript).toString();        _scriptEngine = Application::getInstance()->loadScript(scriptURLString, true, true);        connect(_scriptEngine, &ScriptEngine::runningStateChanged, this, &ScriptEditorWidget::runningStateChanged);        connect(_scriptEngine, &ScriptEngine::errorMessage, this, &ScriptEditorWidget::onScriptError);        connect(_scriptEngine, &ScriptEngine::printedMessage, this, &ScriptEditorWidget::onScriptPrint);        connect(_scriptEngine, &ScriptEngine::update, this, &ScriptEditorWidget::onScriptModified);        connect(_scriptEngine, &ScriptEngine::finished, this, &ScriptEditorWidget::onScriptFinished);    } else {        connect(_scriptEngine, &ScriptEngine::finished, this, &ScriptEditorWidget::onScriptFinished);        Application::getInstance()->stopScript(_currentScript);        _scriptEngine = NULL;    }    return true;} bool ScriptEditorWidget::saveFile(const QString &scriptPath) {     QFile file(scriptPath);     if (!file.open(QFile::WriteOnly | QFile::Text)) {         QMessageBox::warning(this, tr("Interface"), tr("Cannot write script %1:\n%2.").arg(scriptPath)             .arg(file.errorString()));         return false;     }      QTextStream out(&file);     out << _scriptEditorWidgetUI->scriptEdit->toPlainText();     file.close();      setScriptFile(scriptPath);     return true;} void ScriptEditorWidget::loadFile(const QString& scriptPath) {    QUrl url(scriptPath);     // if the scheme length is one or lower, maybe they typed in a file, let's try    const int WINDOWS_DRIVE_LETTER_SIZE = 1;    if (url.scheme().size() <= WINDOWS_DRIVE_LETTER_SIZE) {        QFile file(scriptPath);        if (!file.open(QFile::ReadOnly | QFile::Text)) {            QMessageBox::warning(this, tr("Interface"), tr("Cannot read script %1:\n%2.").arg(scriptPath)                                                                                         .arg(file.errorString()));            return;        }        QTextStream in(&file);        _scriptEditorWidgetUI->scriptEdit->setPlainText(in.readAll());        file.close();        setScriptFile(scriptPath);         if (_scriptEngine != NULL) {            disconnect(_scriptEngine, &ScriptEngine::runningStateChanged, this, &ScriptEditorWidget::runningStateChanged);            disconnect(_scriptEngine, &ScriptEngine::errorMessage, this, &ScriptEditorWidget::onScriptError);            disconnect(_scriptEngine, &ScriptEngine::printedMessage, this, &ScriptEditorWidget::onScriptPrint);            disconnect(_scriptEngine, &ScriptEngine::update, this, &ScriptEditorWidget::onScriptModified);            disconnect(_scriptEngine, &ScriptEngine::finished, this, &ScriptEditorWidget::onScriptFinished);        }    } else {        QNetworkAccessManager& networkAccessManager = NetworkAccessManager::getInstance();        QNetworkReply* reply = networkAccessManager.get(QNetworkRequest(url));        qDebug() << "Downloading included script at" << scriptPath;        QEventLoop loop;        QObject::connect(reply, &QNetworkReply::finished, &loop, &QEventLoop::quit);        loop.exec();        _scriptEditorWidgetUI->scriptEdit->setPlainText(reply->readAll());        if (!saveAs()) {            static_cast<ScriptEditorWindow*>(this->parent()->parent()->parent())->terminateCurrentTab();        }    }     const QString& scriptURLString = QUrl(_currentScript).toString();    _scriptEngine = Application::getInstance()->getScriptEngine(scriptURLString);    if (_scriptEngine != NULL) {        connect(_scriptEngine, &ScriptEngine::runningStateChanged, this, &ScriptEditorWidget::runningStateChanged);        connect(_scriptEngine, &ScriptEngine::errorMessage, this, &ScriptEditorWidget::onScriptError);        connect(_scriptEngine, &ScriptEngine::printedMessage, this, &ScriptEditorWidget::onScriptPrint);        connect(_scriptEngine, &ScriptEngine::update, this, &ScriptEditorWidget::onScriptModified);        connect(_scriptEngine, &ScriptEngine::finished, this, &ScriptEditorWidget::onScriptFinished);    }} bool ScriptEditorWidget::save() {    return _currentScript.isEmpty() ? saveAs() : saveFile(_currentScript);} bool ScriptEditorWidget::saveAs() {    QString fileName = QFileDialog::getSaveFileName(this, tr("Save script"),                                                    Application::getInstance()->getPreviousScriptLocation(),                                                    tr("JavaScript Files (*.js)"));    if (!fileName.isEmpty()) {        Application::getInstance()->setPreviousScriptLocation(fileName);        return saveFile(fileName);    } else {        return false;    }} void ScriptEditorWidget::setScriptFile(const QString& scriptPath) {    _currentScript = scriptPath;    _currentScriptModified = QFileInfo(_currentScript).lastModified();    _scriptEditorWidgetUI->scriptEdit->document()->setModified(false);    setWindowModified(false);     emit scriptnameChanged();} bool ScriptEditorWidget::questionSave() {    if (_scriptEditorWidgetUI->scriptEdit->document()->isModified()) {        QMessageBox::StandardButton button = QMessageBox::warning(this, tr("Interface"),            tr("The script has been modified.\nDo you want to save your changes?"), QMessageBox::Save | QMessageBox::Discard |            QMessageBox::Cancel, QMessageBox::Save);        return button == QMessageBox::Save ? save() : (button == QMessageBox::Cancel ? false : true);    }    return true;} void ScriptEditorWidget::onScriptError(const QString& message) {    _scriptEditorWidgetUI->debugText->appendPlainText("ERROR: " + message);} void ScriptEditorWidget::onScriptPrint(const QString& message) {    _scriptEditorWidgetUI->debugText->appendPlainText("> " + message);} void ScriptEditorWidget::onWindowActivated() {    if (!_isReloading) {        _isReloading = true;                if (QFileInfo(_currentScript).lastModified() > _currentScriptModified) {            if (static_cast<ScriptEditorWindow*>(this->parent()->parent()->parent())->autoReloadScripts()                || QMessageBox::warning(this, _currentScript,                    tr("This file has been modified outside of the Interface editor.") + "\n\n"                        + (isModified()                        ? tr("Do you want to reload it and lose the changes you've made in the Interface editor?")                        : tr("Do you want to reload it?")),                    QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes) {                loadFile(_currentScript);                if (_scriptEditorWidgetUI->onTheFlyCheckBox->isChecked() && isRunning()) {                    _isRestarting = true;                    setRunning(false);                    // Script is restarted once current script instance finishes.                }             }        }         _isReloading = false;    }}