Signal
WebKit2WebView::decide-policy
Declaration
gboolean
decide_policy (
WebKitWebView* self,
WebKit2PolicyDecision* decision,
WebKitPolicyDecisionType decision_type,
gpointer user_data
)
Description [src]
This signal is emitted when WebKit is requesting the client to decide a policy
decision, such as whether to navigate to a page, open a new window or whether or
not to download a resource. The WebKitNavigationPolicyDecision
passed in the
decision
argument is a generic type, but should be casted to a more
specific type when making the decision. For example:
static gboolean
decide_policy_cb (WebKitWebView *web_view,
WebKitPolicyDecision *decision,
WebKitPolicyDecisionType type)
{
switch (type) {
case WEBKIT_POLICY_DECISION_TYPE_NAVIGATION_ACTION: {
WebKitNavigationPolicyDecision *navigation_decision = WEBKIT_NAVIGATION_POLICY_DECISION (decision);
// Make a policy decision here
break;
}
case WEBKIT_POLICY_DECISION_TYPE_NEW_WINDOW_ACTION: {
WebKitNavigationPolicyDecision *navigation_decision = WEBKIT_NAVIGATION_POLICY_DECISION (decision);
// Make a policy decision here
break;
}
case WEBKIT_POLICY_DECISION_TYPE_RESPONSE:
WebKitResponsePolicyDecision *response = WEBKIT_RESPONSE_POLICY_DECISION (decision);
// Make a policy decision here
break;
default:
// Making no decision results in webkit_policy_decision_use()
return FALSE;
}
return TRUE;
}
It is possible to make policy decision asynchronously, by simply calling g_object_ref()
on the decision
argument and returning TRUE
to block the default signal handler.
If the last reference is removed on a WebKitPolicyDecision
and no decision has been
made explicitly, webkit_policy_decision_use()
will be the default policy decision. The
default signal handler will simply call webkit_policy_decision_use(). Only the first
policy decision chosen for a given WebKitPolicyDecision
will have any affect.
Default handler: The default handler is called after the handlers added via |
Parameters
decision
-
Type:
WebKitPolicyDecision
The
WebKitPolicyDecision
.The data is owned by the caller of the function. decision_type
-
Type:
WebKitPolicyDecisionType
A
WebKitPolicyDecisionType
denoting the type ofdecision
.