Support HTML5 form validation feature

HTML5 provides built-in form validation that is supported by chromium.
The form validation messages should be shown by the browser therefore
new MessageBubble UI element has been added to Quick and Widget
implementations.
This patch implements chromium's form validation events and shows the
messages in a MessageBubble.

Change-Id: I0c8f4f102823117e2bfb16ff8a4c503635491939
Reviewed-by: Andras Becsi <andras.becsi@theqtcompany.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/src/webengine/ui_delegates_manager.cpp b/src/webengine/ui_delegates_manager.cpp
index 615c6024d..d22e6546f 100644
--- a/src/webengine/ui_delegates_manager.cpp
+++ b/src/webengine/ui_delegates_manager.cpp
@@ -138,6 +138,7 @@ void NavigateMenuItem::onTriggered()
 
 UIDelegatesManager::UIDelegatesManager(QQuickWebEngineView *view)
     : m_view(view)
+    , m_messageBubbleItem(0)
     FOR_EACH_COMPONENT_TYPE(COMPONENT_MEMBER_INIT, NO_SEPARATOR)
 {
 }
@@ -430,6 +431,38 @@ void UIDelegatesManager::showFilePicker(WebContentsAdapterClient::FileChooserMod
     QMetaObject::invokeMethod(filePicker, "open");
 }
 
+void UIDelegatesManager::showMessageBubble(const QRect &anchor, const QString &mainText, const QString &subText)
+{
+    if (!ensureComponentLoaded(MessageBubble))
+        return;
+
+    Q_ASSERT(m_messageBubbleItem.isNull());
+
+    QQmlContext *context = qmlContext(m_view);
+    m_messageBubbleItem.reset(qobject_cast<QQuickItem *>(messageBubbleComponent->beginCreate(context)));
+    m_messageBubbleItem->setParentItem(m_view);
+    messageBubbleComponent->completeCreate();
+
+    QQmlProperty(m_messageBubbleItem.data(), QStringLiteral("maxWidth")).write(anchor.size().width());
+    QQmlProperty(m_messageBubbleItem.data(), QStringLiteral("mainText")).write(mainText);
+    QQmlProperty(m_messageBubbleItem.data(), QStringLiteral("subText")).write(subText);
+    QQmlProperty(m_messageBubbleItem.data(), QStringLiteral("x")).write(anchor.x());
+    QQmlProperty(m_messageBubbleItem.data(), QStringLiteral("y")).write(anchor.y() + anchor.size().height());
+}
+
+void UIDelegatesManager::hideMessageBubble()
+{
+    m_messageBubbleItem.reset();
+}
+
+void UIDelegatesManager::moveMessageBubble(const QRect &anchor)
+{
+    Q_ASSERT(!m_messageBubbleItem.isNull());
+
+    QQmlProperty(m_messageBubbleItem.data(), QStringLiteral("x")).write(anchor.x());
+    QQmlProperty(m_messageBubbleItem.data(), QStringLiteral("y")).write(anchor.y() + anchor.size().height());
+}
+
 } // namespace QtWebEngineCore
 
 #include "ui_delegates_manager.moc"