From 106e1e4bf32d6f48db7347ea12b3468e7a7ca941 Mon Sep 17 00:00:00 2001
From: Marco Pesenti Gritti <marcopg@litl.com>
Date: Mon, 16 Mar 2009 15:26:47 +0000
Subject: Make document loading async.

---
diff --git a/browser-plugin/plugin.cpp b/browser-plugin/plugin.cpp
index 295c0f7..7f3d6d9 100644
--- a/browser-plugin/plugin.cpp
+++ b/browser-plugin/plugin.cpp
@@ -24,7 +24,8 @@
 
 Plugin::Plugin (NPP instance) : mInstance (instance),
 				mWindow (0),
-				mScriptableObject (0)
+				mScriptableObject (0),
+				mLoadJob (0)
 {
 	mScrolledWindow = gtk_scrolled_window_new (NULL, NULL);
 
@@ -46,6 +47,7 @@ Plugin::Plugin (NPP instance) : mInstance (instance),
 
 Plugin::~Plugin ()
 {
+	ClearLoadJob ();
 }
 
 void
@@ -89,37 +91,42 @@ Plugin::SetWindow (GdkNativeWindow window)
 }
 
 void
-Plugin::ShowLoadingError()
+Plugin::ShowLoadingError ()
 {
 	/* FIXME display loading error in the UI */
 }
 
 void
-Plugin::Load (const char *fname)
+Plugin::ClearLoadJob ()
 {
-	GError *error = NULL;
+        if (mLoadJob != NULL) {
+                if (!ev_job_is_finished (mLoadJob))
+                        ev_job_cancel (mLoadJob);
+
+                g_signal_handlers_disconnect_by_func (
+					mLoadJob,
+					(gpointer)LoadJobFinishedCallback,
+                          		reinterpret_cast<void*>(this));
+
+                g_object_unref (mLoadJob);
+                mLoadJob = NULL;
+        }
+}
 
+void
+Plugin::Load (const char *fname)
+{
 	GFile *file = g_file_new_for_path (fname);
 	char *uri = g_file_get_uri (file);
 	g_object_unref (file);
 
-	EvDocument *document = ev_document_factory_get_document (uri, &error);
-	if (error) {
-		ShowLoadingError ();
-		g_error_free (error);
-		return;
-	}
-
-	ev_view_set_document (EV_VIEW (mView), document);
-	g_object_unref (G_OBJECT (document));
-
-	ev_document_load (document, uri, &error);
-	if (error) {
-		ShowLoadingError ();
-		g_error_free (error);
-		return;
-	}
+	ClearLoadJob ();
 
+	mLoadJob = ev_job_load_new (uri);
+	ev_job_scheduler_push_job (mLoadJob, EV_JOB_PRIORITY_NONE);
+	g_signal_connect (mLoadJob, "finished",
+			  G_CALLBACK (LoadJobFinishedCallback),
+			  reinterpret_cast<void*>(this));
 	g_free (uri);
 }
 
@@ -181,3 +188,18 @@ Plugin::SizingModeCallback (EvView *view, GParamSpec *pspec, gpointer data)
 	Plugin *plugin = reinterpret_cast<Plugin*> (data);
 	plugin->UpdateSizingMode ();
 }
+
+void
+Plugin::LoadJobFinishedCallback (EvJob *job, gpointer data)
+{
+	Plugin *plugin = reinterpret_cast<Plugin*> (data);
+
+	if (!ev_job_is_failed (job)) {
+		ev_view_set_document (EV_VIEW(plugin->mView),
+				      EV_JOB (job)->document);
+	} else {
+		plugin->ShowLoadingError ();
+	}
+
+	plugin->ClearLoadJob ();
+}
diff --git a/browser-plugin/plugin.h b/browser-plugin/plugin.h
index a46e07b..c44e937 100644
--- a/browser-plugin/plugin.h
+++ b/browser-plugin/plugin.h
@@ -42,16 +42,20 @@ class Plugin {
 
 	private:
 		void UpdateSizingMode ();
+		void ClearLoadJob ();
 
 		static void SizingModeCallback (EvView *view,
 						GParamSpec *pspec,
 						gpointer data);
+		static void LoadJobFinishedCallback (EvJob *job,
+						     gpointer data);
 
 		NPP mInstance;
 		NPObject *mScriptableObject;
 		GdkNativeWindow mWindow;
 		GtkWidget *mScrolledWindow;
 		GtkWidget *mView;
+		EvJob *mLoadJob;
 };
 
 #endif // __PLUGIN_H__
--
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