browser-plugin: implement search

Changed the API to be better match for find as you type. Using property
access workaround.

Example:
    plugin.findTerms = "hello"; begin searching and highlights all matches in
                                the document
    plugin.findNext = 42;     (workaround) jump to next match
    plugin.findPrevious = 42; (workaround) jump to previous match

1 files changed, 71 insertions, 4 deletions

diff --git a/browser-plugin/plugin.cpp b/browser-plugin/plugin.cpp
index 88893c8..541e9d9 100644
--- a/browser-plugin/plugin.cpp
+++ b/browser-plugin/plugin.cpp
@@ -26,7 +26,9 @@
 Plugin::Plugin (NPP instance) : mInstance (instance),
 				mScriptableObject (0),
 				mWindow (0),
+				mDocument (0),
 				mLoadJob (0),
+				mFindJob (0),
 				mTitle (0),
 				mHasSelection (false)
 {
@@ -52,6 +54,8 @@ Plugin::Plugin (NPP instance) : mInstance (instance),
 	   used only to calculate the minimum and maximux allowed zoom level. */
 	ev_view_set_screen_dpi (EV_VIEW(mView), 96);
 
+	ev_view_find_set_highlight_search (EV_VIEW (mView), TRUE);
+
 	gtk_container_add (GTK_CONTAINER(mScrolledWindow), mView);
 	gtk_widget_show (mView);
 
@@ -61,6 +65,7 @@ Plugin::Plugin (NPP instance) : mInstance (instance),
 Plugin::~Plugin ()
 {
 	ClearLoadJob ();
+	ClearFindJob ();
 
 	g_free (mTitle);
 
@@ -98,13 +103,58 @@ Plugin::GetZoom (void) const
 }
 
 void
-Plugin::FindNext (const char *text)
+Plugin::ClearFindJob ()
 {
+	if (!mFindJob)
+		return;
+
+	if (!ev_job_is_finished (mFindJob))
+		ev_job_cancel (mFindJob);
+
+	g_signal_handlers_disconnect_by_func (mFindJob,
+					      (gpointer)Plugin::FindJobUpdatedCallback,
+					      reinterpret_cast<void*> (this));
+
+	g_object_unref (mFindJob);
+	mFindJob = 0;
 }
 
 void
-Plugin::FindPrevious (const char *text)
+Plugin::Find (const char *text)
 {
+	if (!mDocument || !EV_IS_DOCUMENT_FIND (mDocument))
+		return;
+
+	ev_view_find_search_changed (EV_VIEW (mView));
+
+	ClearFindJob ();
+
+	if (text && text[0]) {
+		EvPageCache *page_cache = ev_page_cache_get (mDocument);
+
+		mFindJob = ev_job_find_new (mDocument,
+					    ev_page_cache_get_current_page (page_cache),
+					    ev_page_cache_get_n_pages (page_cache),
+					    text, /*case_sensitive=*/ FALSE);
+		g_signal_connect (mFindJob, "updated",
+				  G_CALLBACK (Plugin::FindJobUpdatedCallback),
+				  reinterpret_cast<void*> (this));
+		ev_job_scheduler_push_job (mFindJob, EV_JOB_PRIORITY_NONE);
+	} else {
+		gtk_widget_queue_draw (mView);
+	}
+}
+
+void
+Plugin::FindNext ()
+{
+	ev_view_find_next (EV_VIEW (mView));
+}
+
+void
+Plugin::FindPrevious ()
+{
+	ev_view_find_previous (EV_VIEW (mView));
 }
 
 void
@@ -275,10 +325,13 @@ Plugin::LoadJobFinishedCallback (EvJob *job, gpointer data)
 	Plugin *plugin = reinterpret_cast<Plugin*> (data);
 
 	if (!ev_job_is_failed (job)) {
+		// let EvView own the document and mDocument have weak ref
+		plugin->mDocument = EV_JOB (job)->document;
+
 		ev_view_set_document (EV_VIEW(plugin->mView),
-				      EV_JOB (job)->document);
+				      plugin->mDocument);
 
-		EvDocumentInfo *doc_info = ev_document_get_info (EV_JOB (job)->document);
+		EvDocumentInfo *doc_info = ev_document_get_info (plugin->mDocument);
 		if (doc_info) {
 			if (doc_info->fields_mask & EV_DOCUMENT_INFO_TITLE) {
 
@@ -290,8 +343,22 @@ Plugin::LoadJobFinishedCallback (EvJob *job, gpointer data)
 			ev_document_info_free (doc_info);
 		}
 	} else {
+		plugin->mDocument = 0;
+
 		plugin->ShowLoadingError ();
 	}
 
 	plugin->ClearLoadJob ();
 }
+
+void
+Plugin::FindJobUpdatedCallback (EvJobFind *job, gint page, gpointer data)
+{
+	Plugin *plugin = reinterpret_cast<Plugin*> (data);
+
+	// FIXME: enable/disable find next/prev actions
+
+	ev_view_find_changed (EV_VIEW (plugin->mView),
+			      ev_job_find_get_results (job),
+			      page);
+}