QTfrontend/databrowser.cpp
changeset 5755 a079b4dea081
child 5758 9af54df78b8a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/QTfrontend/databrowser.cpp	Sun Sep 04 13:46:08 2011 +0400
@@ -0,0 +1,52 @@
+#include <QNetworkAccessManager>
+#include <QNetworkRequest>
+#include <QNetworkReply>
+#include <QDebug>
+
+#include "databrowser.h"
+
+const QNetworkRequest::Attribute typeAttribute = (QNetworkRequest::Attribute)(QNetworkRequest::User + 1);
+const QNetworkRequest::Attribute urlAttribute = (QNetworkRequest::Attribute)(QNetworkRequest::User + 2);
+
+DataBrowser::DataBrowser(QWidget *parent) :
+    QTextBrowser(parent)
+{
+
+    manager = new QNetworkAccessManager(this);
+}
+
+QVariant DataBrowser::loadResource(int type, const QUrl & name)
+{
+    if(type == QTextDocument::ImageResource || type == QTextDocument::StyleSheetResource)
+        if(resources.contains(name))
+        {
+            return resources.take(name);
+        }
+        else
+            if(!requestedResources.contains(name))
+            {
+                requestedResources.insert(name);
+
+                QNetworkRequest newRequest(QUrl("http://www.hedgewars.org" + name.toString()));
+                newRequest.setAttribute(typeAttribute, type);
+                newRequest.setAttribute(urlAttribute, name);
+
+                QNetworkReply *reply = manager->get(newRequest);
+                connect(reply, SIGNAL(finished()), this, SLOT(resourceDownloaded()));
+            }
+
+    return QVariant();
+}
+
+void DataBrowser::resourceDownloaded()
+{
+    QNetworkReply * reply = qobject_cast<QNetworkReply *>(sender());
+
+    if(reply)
+    {
+        int type = reply->request().attribute(typeAttribute).toInt();
+        QUrl url = reply->request().attribute(urlAttribute).toUrl();
+        resources.insert(url, reply->readAll());
+        document()->addResource(type, reply->request().url(), QVariant());
+    }
+}