From b41f8c754d2742fa3395a9d1c7f43d8d948280a7 Mon Sep 17 00:00:00 2001
From: David Rowe <david@ctrlaltstudio.com>
Date: Thu, 12 Jan 2017 15:46:53 +1300
Subject: [PATCH] Add updateable message box to JavaScript API

---
 .../scripting/WindowScriptingInterface.cpp    | 72 +++++++++++++++++++
 .../src/scripting/WindowScriptingInterface.h  | 16 +++++
 2 files changed, 88 insertions(+)

diff --git a/interface/src/scripting/WindowScriptingInterface.cpp b/interface/src/scripting/WindowScriptingInterface.cpp
index 765c9a8499..7cfbfb174e 100644
--- a/interface/src/scripting/WindowScriptingInterface.cpp
+++ b/interface/src/scripting/WindowScriptingInterface.cpp
@@ -60,6 +60,19 @@ WindowScriptingInterface::WindowScriptingInterface() {
     });
 }
 
+WindowScriptingInterface::~WindowScriptingInterface() {
+    QHashIterator<int, QQuickItem*> i(_messageBoxes);
+    while (i.hasNext()) {
+        i.next();
+        auto messageBox = i.value();
+        disconnect(messageBox);
+        messageBox->setVisible(false);
+        messageBox->deleteLater();
+    }
+
+    _messageBoxes.clear();
+}
+
 QScriptValue WindowScriptingInterface::hasFocus() {
     return qApp->hasFocus();
 }
@@ -210,3 +223,62 @@ void WindowScriptingInterface::shareSnapshot(const QString& path, const QUrl& hr
 bool WindowScriptingInterface::isPhysicsEnabled() {
     return qApp->isPhysicsEnabled();
 }
+
+int WindowScriptingInterface::openMessageBox(QString title, QString text, int buttons, int defaultButton) {
+    if (QThread::currentThread() != thread()) {
+        int result;
+        QMetaObject::invokeMethod(this, "openMessageBox", Qt::BlockingQueuedConnection,
+            Q_RETURN_ARG(int, result),
+            Q_ARG(QString, title),
+            Q_ARG(QString, text),
+            Q_ARG(int, buttons),
+            Q_ARG(int, defaultButton));
+        return result;
+    }
+
+    return createMessageBox(title, text, buttons, defaultButton);
+}
+
+int WindowScriptingInterface::createMessageBox(QString title, QString text, int buttons, int defaultButton) {
+    auto messageBox = DependencyManager::get<OffscreenUi>()->createMessageBox(OffscreenUi::ICON_INFORMATION, title, text, 
+        static_cast<QFlags<QMessageBox::StandardButton>>(buttons), static_cast<QMessageBox::StandardButton>(defaultButton));
+    connect(messageBox, SIGNAL(selected(int)), this, SLOT(onMessageBoxSelected(int)));
+
+    _lastMessageBoxID += 1;
+    _messageBoxes.insert(_lastMessageBoxID, messageBox);
+
+    return _lastMessageBoxID;
+}
+
+void WindowScriptingInterface::updateMessageBox(int id, QString title, QString text, int buttons, int defaultButton) {
+    auto messageBox = _messageBoxes.value(id);
+    if (messageBox) {
+        messageBox->setProperty("title", title);
+        messageBox->setProperty("text", text);
+        messageBox->setProperty("buttons", buttons);
+        messageBox->setProperty("defaultButton", defaultButton);
+    }
+}
+
+void WindowScriptingInterface::closeMessageBox(int id) {
+    auto messageBox = _messageBoxes.value(id);
+    if (messageBox) {
+        disconnect(messageBox);
+        messageBox->setVisible(false);
+        messageBox->deleteLater();
+        _messageBoxes.remove(id);
+    }
+}
+
+void WindowScriptingInterface::onMessageBoxSelected(int button) {
+    auto messageBox = qobject_cast<QQuickItem*>(sender());
+    auto keys = _messageBoxes.keys(messageBox);
+    if (keys.length() > 0) {
+        auto id = keys[0];  // Should be just one message box.
+        emit messageBoxClosed(id, button);
+        disconnect(messageBox);
+        messageBox->setVisible(false);
+        messageBox->deleteLater();
+        _messageBoxes.remove(id);
+    }
+}
diff --git a/interface/src/scripting/WindowScriptingInterface.h b/interface/src/scripting/WindowScriptingInterface.h
index 6aa8707496..4652e00661 100644
--- a/interface/src/scripting/WindowScriptingInterface.h
+++ b/interface/src/scripting/WindowScriptingInterface.h
@@ -14,7 +14,9 @@
 
 #include <QtCore/QObject>
 #include <QtCore/QString>
+#include <QtQuick/QQuickItem>
 #include <QtScript/QScriptValue>
+#include <QtWidgets/QMessageBox>
 
 class CustomPromptResult {
 public:
@@ -35,6 +37,7 @@ class WindowScriptingInterface : public QObject, public Dependency {
     Q_PROPERTY(int y READ getY)
 public:
     WindowScriptingInterface();
+    ~WindowScriptingInterface();
     int getInnerWidth();
     int getInnerHeight();
     int getX();
@@ -56,6 +59,13 @@ public slots:
     void shareSnapshot(const QString& path, const QUrl& href = QUrl(""));
     bool isPhysicsEnabled();
 
+    int openMessageBox(QString title, QString text, int buttons, int defaultButton);
+    void updateMessageBox(int id, QString title, QString text, int buttons, int defaultButton);
+    void closeMessageBox(int id);
+
+private slots:
+    void onMessageBoxSelected(int button);
+
 signals:
     void domainChanged(const QString& domainHostname);
     void svoImportRequested(const QString& url);
@@ -64,9 +74,15 @@ signals:
     void snapshotShared(const QString& error);
     void processingGif();
 
+    void messageBoxClosed(int id, int button);
+
 private:
     QString getPreviousBrowseLocation() const;
     void setPreviousBrowseLocation(const QString& location);
+
+    int createMessageBox(QString title, QString text, int buttons, int defaultButton);
+    QHash<int, QQuickItem*> _messageBoxes;
+    int _lastMessageBoxID{ -1 };
 };
 
 #endif // hifi_WindowScriptingInterface_h