When showing a modal alert put up by a web page, switch the window to that

2004-10-30  Christian Persch  <chpe@cvs.gnome.org>

	* doc/reference/tmpl/ephy-embed.sgml:
	* embed/ephy-embed.c: (ephy_embed_base_init):
	* embed/ephy-embed.h:
	* embed/mozilla/EphyBrowser.cpp:
	* embed/mozilla/EphyBrowser.h:
	* src/ephy-window.c: (modal_alert_cb), (tab_added_cb),
	(tab_removed_cb):

	When showing a modal alert put up by a web page, switch the window
	to that tab.

7 files changed, 176 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 8bb1db0fe..be82bba7a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2004-10-30  Christian Persch  <chpe@cvs.gnome.org>
+
+	* doc/reference/tmpl/ephy-embed.sgml:
+	* embed/ephy-embed.c: (ephy_embed_base_init):
+	* embed/ephy-embed.h:
+	* embed/mozilla/EphyBrowser.cpp:
+	* embed/mozilla/EphyBrowser.h:
+	* src/ephy-window.c: (modal_alert_cb), (tab_added_cb),
+	(tab_removed_cb):
+
+	When showing a modal alert put up by a web page, switch the window
+	to that tab.
+
 2004-10-29  Christian Persch  <chpe@cvs.gnome.org>
 
 	* src/bookmarks/ephy-topic-action.c: (can_open_in_tabs),
diff --git a/doc/reference/tmpl/ephy-embed.sgml b/doc/reference/tmpl/ephy-embed.sgml
index bf8a33dde..edf35cc6c 100644
--- a/doc/reference/tmpl/ephy-embed.sgml
+++ b/doc/reference/tmpl/ephy-embed.sgml
@@ -93,6 +93,21 @@ be done by casting).
 @ephyembed: the object which received the signal.
 @arg1: 
 
+<!-- ##### SIGNAL EphyEmbed::ge-modal-alert ##### -->
+<para>
+
+</para>
+
+@ephyembed: the object which received the signal.
+@Returns: 
+
+<!-- ##### SIGNAL EphyEmbed::ge-modal-alert-closed ##### -->
+<para>
+
+</para>
+
+@ephyembed: the object which received the signal.
+
 <!-- ##### SIGNAL EphyEmbed::ge-net-state ##### -->
 <para>
 
@@ -158,6 +173,8 @@ be done by casting).
 @: 
 @:
 @: 
+@:
+@: 
 @: 
 
 <!-- ##### SIGNAL EphyEmbed::ge-security-change ##### -->
@@ -193,6 +210,8 @@ be done by casting).
 @security_change: 
 @zoom_change: 
 @content_change: 
+@modal_alert: 
+@modal_alert_closed: 
 @load_url: 
 @stop_load: 
 @reload: 
diff --git a/embed/ephy-embed.c b/embed/ephy-embed.c
index 76e8ea0c8..36e87fa24 100644
--- a/embed/ephy-embed.c
+++ b/embed/ephy-embed.c
@@ -288,6 +288,39 @@ ephy_embed_base_init (gpointer g_class)
 			      1,
 			      G_TYPE_STRING);
 
+/**
+ * EphyEmbed::ge-modal-alert:
+ * @embed:
+ *
+ * The ::ge-modal-alert signal is emitted when a DOM event will open a
+ * modal alert.
+ *
+ * Return %TRUE to prevent the dialog from being opened.
+ **/
+		g_signal_new ("ge_modal_alert",
+			      EPHY_TYPE_EMBED,
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (EphyEmbedIface, modal_alert),
+			      g_signal_accumulator_true_handled, NULL,
+			      ephy_marshal_BOOLEAN__VOID,
+			      G_TYPE_BOOLEAN,
+			      0);
+/**
+ * EphyEmbed::ge-modal-alert-closed:
+ * @embed:
+ *
+ * The ::ge-modal-alert-closed signal is emitted when a modal alert put up by a
+ * DOM event was closed.
+ **/
+		g_signal_new ("ge_modal_alert_closed",
+			      EPHY_TYPE_EMBED,
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (EphyEmbedIface, modal_alert_closed),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__VOID,
+			      G_TYPE_NONE,
+			      0);
+
 		initialized = TRUE;
 	}
 }
diff --git a/embed/ephy-embed.h b/embed/ephy-embed.h
index 2ebc3b69a..daa9cba0e 100644
--- a/embed/ephy-embed.h
+++ b/embed/ephy-embed.h
@@ -131,6 +131,8 @@ struct _EphyEmbedIface
 					 float new_zoom);
 	void	 (* content_change)	(EphyEmbed *embed,
 					 const char *uri);
+	gboolean (* modal_alert)	(EphyEmbed *embed);
+	void	 (* modal_alert_closed)	(EphyEmbed *embed);
 
 	/* Methods  */
 	void		   (* load_url)			(EphyEmbed *embed,
diff --git a/embed/mozilla/EphyBrowser.cpp b/embed/mozilla/EphyBrowser.cpp
index 040b7615f..30fed7195 100644
--- a/embed/mozilla/EphyBrowser.cpp
+++ b/embed/mozilla/EphyBrowser.cpp
@@ -59,6 +59,7 @@
 #include "nsIDOMDocument.h"
 #include "nsIDOM3Document.h"
 #include "nsIDOMEvent.h"
+#include "nsIDOMNSEvent.h"
 #include "nsIDOMEventTarget.h"
 #include "nsIDOMPopupBlockedEvent.h"
 #include "nsIDOMNode.h"
@@ -82,6 +83,13 @@ static PRUnichar DOMLinkAdded[] = { 'D', 'O', 'M', 'L', 'i', 'n', 'k',
 static PRUnichar DOMPopupBlocked[] = { 'D', 'O', 'M', 'P', 'o', 'p',
 				       'u', 'p', 'B', 'l', 'o', 'c',
 				       'k', 'e', 'd', '\0' };
+static PRUnichar DOMWillOpenModalDialog[] = { 'D', 'O', 'M', 'W', 'i', 'l', 'l',
+					      'O', 'p', 'e', 'n', 'M', 'o', 'd',
+					      'a', 'l', 'D', 'i', 'a', 'l', 'o',
+					      'g', '\0' };
+static PRUnichar DOMModalDialogClosed[] = { 'D', 'O', 'M', 'M', 'o', 'd', 'a',
+					    'l', 'D', 'i', 'a', 'l', 'o', 'g',
+					    'C', 'l', 'o', 's', 'e', 'd', '\0' };
 
 EphyEventListener::EphyEventListener(void)
 : mOwner(nsnull)
@@ -205,9 +213,52 @@ EphyPopupBlockEventListener::HandleEvent (nsIDOMEvent * aDOMEvent)
 	return NS_OK;
 }
 
+NS_IMETHODIMP
+EphyModalAlertEventListener::HandleEvent (nsIDOMEvent * aDOMEvent)
+{
+	NS_ENSURE_TRUE (mOwner, NS_ERROR_FAILURE);
+
+	/* make sure the event is trusted */
+	nsCOMPtr<nsIDOMNSEvent> nsEvent (do_QueryInterface (aDOMEvent));
+	NS_ENSURE_TRUE (nsEvent, NS_ERROR_FAILURE);
+	PRBool isTrusted = PR_FALSE;
+	nsEvent->GetIsTrusted (&isTrusted);
+	if (!isTrusted) return NS_OK;
+
+	nsresult rv;
+	nsEmbedString type;
+	rv = aDOMEvent->GetType (type);
+	NS_ENSURE_SUCCESS (rv, rv);
+
+	nsEmbedCString cType;
+	NS_UTF16ToCString (type, NS_CSTRING_ENCODING_UTF8, cType);
+
+	LOG ("ModalAlertListener event %s", cType.get());
+
+	if (strcmp (cType.get(), "DOMWillOpenModalDialog") == 0)
+	{
+		gboolean retval = FALSE;
+		g_signal_emit_by_name (mOwner, "ge-modal-alert", &retval);
+
+		/* suppress alert */
+		if (retval)
+		{
+			aDOMEvent->PreventDefault ();
+			aDOMEvent->StopPropagation ();
+		}
+	}
+	else if (strcmp (cType.get(), "DOMModalDialogClosed") == 0)
+	{
+		g_signal_emit_by_name (mOwner, "ge-modal-alert-closed");
+	}
+
+	return NS_OK;
+}
+
 EphyBrowser::EphyBrowser ()
 : mFaviconEventListener(nsnull)
 , mPopupBlockEventListener(nsnull)
+, mModalAlertListener(nsnull)
 , mInitialized(PR_FALSE)
 {
 	LOG ("EphyBrowser ctor (%p)", this)
@@ -247,6 +298,12 @@ nsresult EphyBrowser::Init (GtkMozEmbed *mozembed)
 	rv = mPopupBlockEventListener->Init (EPHY_EMBED (mozembed));
 	NS_ENSURE_SUCCESS (rv, NS_ERROR_FAILURE);
 
+	mModalAlertListener = new EphyModalAlertEventListener ();
+	if (!mModalAlertListener) return NS_ERROR_OUT_OF_MEMORY;
+
+	rv = mModalAlertListener->Init (EPHY_EMBED (mozembed));
+	NS_ENSURE_SUCCESS (rv, NS_ERROR_FAILURE);
+
  	rv = GetListener();
 	NS_ENSURE_SUCCESS (rv, NS_ERROR_FAILURE);
 
@@ -282,6 +339,10 @@ EphyBrowser::AttachListeners(void)
 					    mFaviconEventListener, PR_FALSE);
 	rv |= mEventTarget->AddEventListener(nsEmbedString(DOMPopupBlocked),
 					     mPopupBlockEventListener, PR_FALSE);
+	rv |= mEventTarget->AddEventListener(nsEmbedString(DOMWillOpenModalDialog),
+					     mModalAlertListener, PR_TRUE);
+	rv |= mEventTarget->AddEventListener(nsEmbedString(DOMModalDialogClosed),
+					     mModalAlertListener, PR_TRUE);
 	NS_ENSURE_SUCCESS (rv, NS_ERROR_FAILURE);
 
 	return NS_OK;
@@ -297,6 +358,10 @@ EphyBrowser::DetachListeners(void)
 					       mFaviconEventListener, PR_FALSE);
 	rv |= mEventTarget->RemoveEventListener(nsEmbedString(DOMPopupBlocked),
 					        mPopupBlockEventListener, PR_FALSE);
+	rv |= mEventTarget->RemoveEventListener(nsEmbedString(DOMWillOpenModalDialog),
+						mModalAlertListener, PR_TRUE);
+	rv |= mEventTarget->RemoveEventListener(nsEmbedString(DOMModalDialogClosed),
+						mModalAlertListener, PR_TRUE);
 	NS_ENSURE_SUCCESS (rv, NS_ERROR_FAILURE);
 
 	return NS_OK;
diff --git a/embed/mozilla/EphyBrowser.h b/embed/mozilla/EphyBrowser.h
index d7fc5a148..deb96b15a 100644
--- a/embed/mozilla/EphyBrowser.h
+++ b/embed/mozilla/EphyBrowser.h
@@ -77,6 +77,12 @@ public:
 	NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent);
 };
 
+class EphyModalAlertEventListener : public EphyEventListener
+{
+public:
+	NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent);
+};
+
 class EphyBrowser
 {
 public:
@@ -145,6 +151,7 @@ private:
 	nsCOMPtr<nsISupports> mSecurityInfo;
 	EphyFaviconEventListener *mFaviconEventListener;
 	EphyPopupBlockEventListener *mPopupBlockEventListener;
+	EphyModalAlertEventListener *mModalAlertListener;
 	PRBool mInitialized;
 
 	nsresult GetListener (void);
diff --git a/src/ephy-window.c b/src/ephy-window.c
index ce09eaa57..8c6439644 100644
--- a/src/ephy-window.c
+++ b/src/ephy-window.c
@@ -1817,11 +1817,34 @@ update_tabs_menu_sensitivity (EphyWindow *window)
 	g_object_set (action, "sensitive", detach, NULL);
 }
 
+static gboolean
+modal_alert_cb (EphyEmbed *embed,
+		EphyWindow *window)
+{
+	EphyTab *tab;
+	char *address;
+
+	tab = ephy_tab_for_embed (embed);
+	g_return_val_if_fail (tab != NULL, FALSE);
+
+	ephy_window_jump_to_tab (window, tab);
+
+	/* make sure the location entry shows the real URL of the tab's page */
+	address = ephy_embed_get_location (embed, TRUE);
+	toolbar_set_location (window->priv->toolbar, address);
+	g_free (address);
+
+	/* don't suppress alert */
+	return FALSE;
+}
+
 static void
 tab_added_cb (EphyNotebook *notebook,
 	      EphyTab *tab,
 	      EphyWindow *window)
 {
+	EphyEmbed *embed;
+
         g_return_if_fail (EPHY_IS_TAB (tab));
 
 	window->priv->num_tabs++;
@@ -1830,6 +1853,12 @@ tab_added_cb (EphyNotebook *notebook,
 
 	g_signal_connect_object (G_OBJECT (tab), "notify::visible",
 				 G_CALLBACK (sync_tab_visibility), window, 0);
+
+	embed = ephy_tab_get_embed (tab);
+	g_return_if_fail (embed != NULL);
+
+	g_signal_connect_after (embed, "ge-modal-alert",
+				G_CALLBACK (modal_alert_cb), window);
 }
 
 static void
@@ -1837,6 +1866,8 @@ tab_removed_cb (EphyNotebook *notebook,
 		EphyTab *tab,
 		EphyWindow *window)
 {
+	EphyEmbed *embed;
+
         g_return_if_fail (EPHY_IS_TAB (tab));
 
 	g_signal_handlers_disconnect_by_func (G_OBJECT (tab),
@@ -1849,6 +1880,12 @@ tab_removed_cb (EphyNotebook *notebook,
 	{
 		update_tabs_menu_sensitivity (window);
 	}
+
+	embed = ephy_tab_get_embed (tab);
+	g_return_if_fail (embed != NULL);
+
+	g_signal_handlers_disconnect_by_func
+		(embed, G_CALLBACK (modal_alert_cb), window);
 }
 
 static void