Hello all,
Here is one of the ways to send the error signal to the upper layer from
the webkit core codes. Basically I just comment out the
ASSERT code in DocumentLoader::mainReceiveError()
and emit a GTK signal (error-load-page) in the
FrameLoaderClientGtk::shouldFallBack.
with the corresponding error code from Curl. So the main application
could just subscribe
the signal error-load-page, do error handling when the signal callback.
However, as I am new to webkit, I am not sure if it is the proper way
to fire event in this
particular method. Or someone could show me a better way to do it.
Please note my webkit build is using r41053, GTK+ and Curl backend.
Enjoy!
Regards,
Jenson
>Hi all
>How can I do error handling in webkit? Suppose I have given wrong URL then
>how can I show proper message? How can I handle this situation?Can you give
>sample example?
>
>Thanks in advance..
>
>Regards,
>Nitin Walke
Index: WebKit/gtk/WebCoreSupport/FrameLoaderClientGtk.cpp
===================================================================
--- WebKit/gtk/WebCoreSupport/FrameLoaderClientGtk.cpp (revision 41053)
+++ WebKit/gtk/WebCoreSupport/FrameLoaderClientGtk.cpp (working copy)
@@ -803,9 +803,12 @@
return ResourceError("", 0, "", "");
}
-bool FrameLoaderClient::shouldFallBack(const ResourceError&)
+bool FrameLoaderClient::shouldFallBack(const ResourceError& error)
{
- notImplemented();
+ //notImplemented();
+ gint errorCode = error.errorCode();
+ WebKitWebView* webView = getViewFromFrame(m_frame);
+ g_signal_emit_by_name(webView, "error-load-page", (gpointer)&errorCode);
return false;
}
Index: WebKit/gtk/webkit/webkitwebview.cpp
===================================================================
--- WebKit/gtk/webkit/webkitwebview.cpp (revision 41053)
+++ WebKit/gtk/webkit/webkitwebview.cpp (working copy)
@@ -132,6 +132,7 @@
COPY_CLIPBOARD,
PASTE_CLIPBOARD,
CUT_CLIPBOARD,
+ ERROR_LOAD_PAGE,
LAST_SIGNAL
};
@@ -1376,6 +1377,24 @@
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
+ /**
+ * WebKitWebView::error-load-page:
+ * @web_view: the object which received the signal
+ *
+ * The #WebKitWebView::error-load-page signal is a signal which
+ * gets emitted when there is error when loading the page.
+ *
+ */
+ webkit_web_view_signals[ERROR_LOAD_PAGE] = g_signal_new("error-load-page",
+ G_TYPE_FROM_CLASS(webViewClass),
+ (GSignalFlags)(G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION),
+ 0,
+ NULL,
+ NULL,
+ g_cclosure_marshal_VOID__INT,
+ G_TYPE_NONE,1,
+ G_TYPE_INT);
+
/*
* implementations of virtual methods
*/
Index: WebCore/platform/network/curl/ResourceHandleManager.cpp
===================================================================
--- WebCore/platform/network/curl/ResourceHandleManager.cpp (revision 41053)
+++ WebCore/platform/network/curl/ResourceHandleManager.cpp (working copy)
@@ -325,8 +325,10 @@
curl_easy_getinfo(d->m_handle, CURLINFO_EFFECTIVE_URL, &url);
fprintf(stderr, "Curl ERROR for url='%s', error: '%s'\n", url, curl_easy_strerror(msg->data.result));
#endif
- if (d->client())
- d->client()->didFail(job, ResourceError());
+ if (d->client()) {
+ ResourceError error = ResourceError(String(), (int)msg->data.result, String(), String());
+ d->client()->didFail(job, error);
+ }
}
removeFromCurl(job);
Index: WebCore/loader/DocumentLoader.cpp
===================================================================
--- WebCore/loader/DocumentLoader.cpp (revision 41053)
+++ WebCore/loader/DocumentLoader.cpp (working copy)
@@ -255,7 +255,7 @@
void DocumentLoader::mainReceivedError(const ResourceError& error, bool isComplete)
{
- ASSERT(!error.isNull());
+ //ASSERT(!error.isNull());
#if ENABLE(OFFLINE_WEB_APPLICATIONS)
ApplicationCacheGroup* group = m_candidateApplicationCacheGroup;
Index: WebKitTools/GtkLauncher/main.c
===================================================================
--- WebKitTools/GtkLauncher/main.c (revision 41053)
+++ WebKitTools/GtkLauncher/main.c (working copy)
@@ -65,6 +65,13 @@
}
static void
+error_load_page_cb (WebKitWebView* page, gpointer data)
+{
+ gint *error= (gint *)data;
+ g_printf("Error loading page, return:[%d]\n", *error);
+}
+
+static void
title_change_cb (WebKitWebView* web_view, WebKitWebFrame* web_frame, const gchar* title, gpointer data)
{
if (main_title)
@@ -119,6 +126,7 @@
g_signal_connect (G_OBJECT (web_view), "load-progress-changed", G_CALLBACK (progress_change_cb), web_view);
g_signal_connect (G_OBJECT (web_view), "load-committed", G_CALLBACK (load_commit_cb), web_view);
g_signal_connect (G_OBJECT (web_view), "hovering-over-link", G_CALLBACK (link_hover_cb), web_view);
+ g_signal_connect (G_OBJECT (web_view), "error-load-page", G_CALLBACK (error_load_page_cb), web_view);
return scrolled_window;
}
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