QmlDesigner: Add support for tooltip in item library

This allows to define tool tips in the .metainfo files.

Change-Id: I3236c6e9f374a052e99b18d8c3983bfd0f072162
Reviewed-by: Henning Gründl <henning.gruendl@qt.io>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

share/qtcreator/qmldesigner/itemLibraryQmlSources/ItemDelegate.qml

@@ -68,6 +68,8 @@ Item {
             id: mouseRegion
             anchors.fill: parent
 
+            tooltip: toolTip
+
             onShowContextMenu: delegateRoot.showContextMenu()
             onPressed: (mouse)=> {
                 allowTooltip = false

share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/ImagePreviewTooltipArea.qml

@@ -5,7 +5,7 @@ import QtQuick 2.15
 import QtQuick.Layouts 1.15
 import HelperWidgets 2.0
 
-MouseArea {
+ToolTipArea {
     id: mouseArea
 
     property bool allowTooltip: true

src/plugins/qmldesigner/designercore/include/itemlibraryinfo.h

@@ -47,6 +47,7 @@ public:
     QString requiredImport() const;
     QString customComponentSource() const;
     QStringList extraFilePaths() const;
+    QString toolTip() const;
 
     using Property = QmlDesigner::PropertyContainer;
 
@@ -62,6 +63,7 @@ public:
     void setCategory(const QString &category);
     void setQmlPath(const QString &qml);
     void setRequiredImport(const QString &requiredImport);
+    void setToolTip(const QString &tooltip);
     void addHints(const QHash<QString, QString> &hints);
     void setCustomComponentSource(const QString &source);
     void addExtraFilePath(const QString &extraFile);

src/plugins/qmldesigner/designercore/metainfo/itemlibraryinfo.cpp

@@ -3,6 +3,7 @@
 
 #include "itemlibraryinfo.h"
 #include "nodemetainfo.h"
+#include "qregularexpression.h"
 
 #include <invalidmetainfoexception.h>
 
@@ -32,6 +33,7 @@ public:
     QHash<QString, QString> hints;
     QString customComponentSource;
     QStringList extraFilePaths;
+    QString toolTip;
 };
 
 } // namespace Internal
@@ -96,6 +98,11 @@ QStringList ItemLibraryEntry::extraFilePaths() const
     return m_data->extraFilePaths;
 }
 
+QString ItemLibraryEntry::toolTip() const
+{
+    return m_data->toolTip;
+}
+
 int ItemLibraryEntry::majorVersion() const
 {
     return m_data->majorVersion;
@@ -165,6 +172,16 @@ void ItemLibraryEntry::setRequiredImport(const QString &requiredImport)
     m_data->requiredImport = requiredImport;
 }
 
+void ItemLibraryEntry::setToolTip(const QString &tooltip)
+{
+    static QRegularExpression regularExpressionPattern(QLatin1String("^qsTr\\(\"(.*)\"\\)$"));
+    const QRegularExpressionMatch match = regularExpressionPattern.match(tooltip);
+    if (match.hasMatch())
+        m_data->toolTip = match.captured(1);
+    else
+        m_data->toolTip = tooltip;
+}
+
 void ItemLibraryEntry::addHints(const QHash<QString, QString> &hints)
 {
     Utils::addToHash(&m_data->hints, hints);

src/plugins/qmldesigner/designercore/metainfo/metainforeader.cpp

@@ -266,6 +266,8 @@ void MetaInfoReader::readItemLibraryEntryProperty(const QString &name, const QVa
         setVersion(value.toString());
     } else if (name == QStringLiteral("requiredImport")) {
         m_currentEntry.setRequiredImport(value.toString());
+    } else if (name == QStringLiteral("toolTip")) {
+        m_currentEntry.setToolTip(value.toString());
     } else {
         addError(::QmlDesigner::Internal::MetaInfoReader::tr(
                      "Unknown property for ItemLibraryEntry %1")