Qt: Coloringrules Mime is encoded as JSON

Encode coloring rules as json objects to avoid encoding issues

Change-Id: I4b5369fef3c0f9e73cbb08edf14de6535ff35026
Reviewed-on: https://code.wireshark.org/review/34947
Petri-Dish: Roland Knall <rknall@gmail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Roland Knall <rknall@gmail.com>

docbook/wsdg_src/WSDG_chapter_sources.adoc

@@ -1405,32 +1405,21 @@ Display filters are being dragged and dropped by utilizing this mime type.
 Coloring Rules are being used for dragging and dropping color rules inside the
 coloring rules dialog.
 
-[cols="1,3,1", options="header"]
-|===
-|Name
-|Description
-|Qt/C++ Type
-
-|disabled
-|Is the coloring rule enabled/disabled
-|bool
-
-|name
-|Name to be displayed for it
-|QString
-
-|filter
-|The display filter
-|QString
-
-|foreground
-|Foreground Color
-|QColor
-
-|background
-|Background Color
-|QColor
-|===
+[source,json]
+----
+{
+        "coloringrules" :
+        [
+                {
+                        "disabled": false,
+                        "name": "UDP Ports for 8080",
+                        "filter": "udp.port == 8080",
+                        "foreground": "[0x0000, 0x0000, 0x0000]",
+                        "background": "[0xFFFF, 0xFFFF, 0xFFFF]"
+                }
+        ]
+}
+----
 
 ==== Filter List
 

ui/qt/models/coloring_rules_model.cpp

@@ -21,6 +21,9 @@
 #include <ui/qt/utils/wireshark_mime_data.h>
 
 #include <QMimeData>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QJsonArray>
 
 ColoringRuleItem::ColoringRuleItem(bool disabled, QString name, QString filter, QColor foreground, QColor background, ColoringRuleItem* parent)
     : ModelHelperTreeItem<ColoringRuleItem>(parent),
@@ -383,7 +386,7 @@ QVariant ColoringRulesModel::headerData(int section, Qt::Orientation orientation
 
 Qt::DropActions ColoringRulesModel::supportedDropActions() const
 {
-    return Qt::MoveAction;
+    return Qt::MoveAction | Qt::CopyAction;
 }
 
 QStringList ColoringRulesModel::mimeTypes() const
@@ -398,20 +401,27 @@ QMimeData* ColoringRulesModel::mimeData(const QModelIndexList &indexes) const
         return NULL;
 
     QMimeData *mimeData = new QMimeData();
-    QByteArray encodedData;
 
-    QDataStream stream(&encodedData, QIODevice::WriteOnly);
-
-    foreach (const QModelIndex &index, indexes) {
-        //use first column as "filter"
-        if (index.column() == 0) {
-            //Retrieve "native" data to save lots of conversions in the process
-            ColoringRuleItem* item = root_->child(index.row());
-
-            stream << item->disabled_ << item->name_ << item->filter_ << item->foreground_ << item->background_;
+    QJsonArray data;
+    foreach ( const QModelIndex & index, indexes )
+    {
+        if ( index.column() == 0 )
+        {
+            ColoringRuleItem * item = root_->child(index.row());
+            QJsonObject entry;
+            entry["disabled"] = item->disabled_;
+            entry["name"] = item->name_;
+            entry["filter"] = item->filter_;
+            entry["foreground"] = qVariantFromValue(item->foreground_).toString();
+            entry["background"] = qVariantFromValue(item->background_).toString();
+            data.append(entry);
         }
     }
 
+    QJsonObject dataSet;
+    dataSet["coloringrules"] = data;
+    QByteArray encodedData = QJsonDocument(dataSet).toJson();
+
     mimeData->setData(WiresharkMimeData::ColoringRulesMimeType, encodedData);
     return mimeData;
 }
@@ -436,27 +446,35 @@ bool ColoringRulesModel::dropMimeData(const QMimeData *data, Qt::DropAction acti
     else
         beginRow = rowCount();
 
-    bool disabled;
-    QString name;
-    QString filter;
-    QColor foreground;
-    QColor background;
-    ColoringRuleItem* item;
     QList<QVariant> rules;
 
-    QByteArray encodedData = data->data(WiresharkMimeData::ColoringRulesMimeType);
-    QDataStream stream(&encodedData, QIODevice::ReadOnly);
-    int rows = 0;
+    QJsonDocument encodedData = QJsonDocument::fromJson(data->data(WiresharkMimeData::ColoringRulesMimeType));
+    if ( ! encodedData.isObject() || ! encodedData.object().contains("coloringrules") )
+        return false;
 
-    while (!stream.atEnd()) {
-        stream >> disabled >> name >> filter >> foreground >> background;
+    QJsonArray dataArray = encodedData.object()["coloringrules"].toArray();
 
-        item = new ColoringRuleItem(disabled, name, filter, foreground, background, root_);
+    for ( int row = 0; row < dataArray.count(); row++ )
+    {
+        QJsonObject entry = dataArray.at(row).toObject();
+
+        if ( ! entry.contains("foreground") || ! entry.contains("background") || ! entry.contains("filter") )
+            continue;
+
+        QColor fgColor = entry["foreground"].toVariant().value<QColor>();
+        QColor bgColor = entry["background"].toVariant().value<QColor>();
+
+        ColoringRuleItem * item = new ColoringRuleItem(
+                entry["disabled"].toVariant().toBool(),
+                entry["name"].toString(),
+                entry["filter"].toString(),
+                fgColor,
+                bgColor,
+                root_);
         rules.append(VariantPointer<ColoringRuleItem>::asQVariant(item));
-        ++rows;
     }
 
-    insertRows(beginRow, rows, QModelIndex());
+    insertRows(beginRow, rules.count(), QModelIndex());
     for (int i = 0; i < rules.count(); i++) {
         QModelIndex idx = index(beginRow, 0, QModelIndex());
         setData(idx, rules[i], Qt::UserRole);