#include "ev-jobs.h"
#include "ev-job-queue.h"
#include "ev-document-thumbnails.h"
#include "ev-document-links.h"

static void ev_job_init                 (EvJob               *job);
static void ev_job_class_init           (EvJobClass          *class);
static void ev_job_links_init           (EvJobLinks          *job);
static void ev_job_links_class_init     (EvJobLinksClass     *class);
static void ev_job_render_init          (EvJobRender         *job);
static void ev_job_render_class_init    (EvJobRenderClass    *class);
static void ev_job_thumbnail_init       (EvJobThumbnail      *job);
static void ev_job_thumbnail_class_init (EvJobThumbnailClass *class);

enum
{
	FINISHED,
	LAST_SIGNAL
};

static guint job_signals[LAST_SIGNAL] = { 0 };

G_DEFINE_TYPE (EvJob, ev_job, G_TYPE_OBJECT)
G_DEFINE_TYPE (EvJobLinks, ev_job_links, EV_TYPE_JOB)
G_DEFINE_TYPE (EvJobRender, ev_job_render, EV_TYPE_JOB)
G_DEFINE_TYPE (EvJobThumbnail, ev_job_thumbnail, EV_TYPE_JOB)


static void ev_job_init (EvJob *job) { /* Do Nothing */ }

static void
ev_job_dispose (GObject *object)
{
	EvJob *job;

	job = EV_JOB (object);

	if (job->document) {
		g_object_unref (job->document);
		job->document = NULL;
	}

	(* G_OBJECT_CLASS (ev_job_parent_class)->dispose) (object);
}

static void
ev_job_class_init (EvJobClass *class)
{
	GObjectClass *oclass;

	oclass = G_OBJECT_CLASS (class);

	oclass->dispose = ev_job_dispose;

	job_signals [FINISHED] =
		g_signal_new ("finished",
			      EV_TYPE_JOB,
			      G_SIGNAL_RUN_LAST,
			      G_STRUCT_OFFSET (EvJobClass, finished),
			      NULL, NULL,
			      g_cclosure_marshal_VOID__VOID,
			      G_TYPE_NONE, 0);
}


static void ev_job_links_init (EvJobLinks *job) { /* Do Nothing */ }

static void
ev_job_links_dispose (GObject *object)
{
	EvJobLinks *job;

	job = EV_JOB_LINKS (object);

	if (job->model) {
		g_object_unref (job->model);
		job->model = NULL;
	}

	(* G_OBJECT_CLASS (ev_job_links_parent_class)->dispose) (object);
}

static void
ev_job_links_class_init (EvJobLinksClass *class)
{
	GObjectClass *oclass;

	oclass = G_OBJECT_CLASS (class);

	oclass->dispose = ev_job_links_dispose;
}


static void ev_job_render_init (EvJobRender *job) { /* Do Nothing */ }

static void
ev_job_render_dispose (GObject *object)
{
	EvJobRender *job;

	job = EV_JOB_RENDER (object);

	if (job->pixbuf) {
		g_object_unref (job->pixbuf);
		job->pixbuf = NULL;
	}

	(* G_OBJECT_CLASS (ev_job_render_parent_class)->dispose) (object);
}

static void
ev_job_render_class_init (EvJobRenderClass *class)
{
	GObjectClass *oclass;

	oclass = G_OBJECT_CLASS (class);

	oclass->dispose = ev_job_render_dispose;
}

static void ev_job_thumbnail_init (EvJobThumbnail *job) { /* Do Nothing */ }

static void
ev_job_thumbnail_dispose (GObject *object)
{
	EvJobThumbnail *job;

	job = EV_JOB_THUMBNAIL (object);

	if (job->thumbnail) {
		g_object_unref (job->thumbnail);
		job->thumbnail = NULL;
	}

	(* G_OBJECT_CLASS (ev_job_thumbnail_parent_class)->dispose) (object);
}

static void
ev_job_thumbnail_class_init (EvJobThumbnailClass *class)
{
	GObjectClass *oclass;

	oclass = G_OBJECT_CLASS (class);

	oclass->dispose = ev_job_thumbnail_dispose;
}

/* Public functions */
void
ev_job_finished (EvJob *job)
{
	g_return_if_fail (EV_IS_JOB (job));

	g_signal_emit (job, job_signals[FINISHED], 0);
}

EvJob *
ev_job_links_new (EvDocument *document)
{
	EvJob *job;

	job = g_object_new (EV_TYPE_JOB_LINKS, NULL);
	job->document = g_object_ref (document);

	return job;
}

void
ev_job_links_run (EvJobLinks *job)
{
	g_return_if_fail (EV_IS_JOB_LINKS (job));

	ev_document_doc_mutex_lock ();
	job->model = ev_document_links_get_links_model (EV_DOCUMENT_LINKS (EV_JOB (job)->document));
	EV_JOB (job)->finished = TRUE;
	ev_document_doc_mutex_unlock ();
}


EvJob *
ev_job_render_new (EvDocument *document,
		   gint        page,
		   double      scale,
		   gint        width,
		   gint        height,
		   gboolean    include_links)
{
	EvJobRender *job;

	job = g_object_new (EV_TYPE_JOB_RENDER, NULL);

	EV_JOB (job)->document = g_object_ref (document);
	job->page = page;
	job->scale = scale;
	job->target_width = width;
	job->target_height = height;
	job->include_links = include_links;

	return EV_JOB (job);
}

void
ev_job_render_run (EvJobRender *job)
{
	g_return_if_fail (EV_IS_JOB_RENDER (job));

	ev_document_doc_mutex_lock ();

	job->pixbuf = ev_document_render_pixbuf (EV_JOB (job)->document,
						 job->page,
						 job->scale);
	if (job->include_links)
		job->link_mapping = ev_document_get_links (EV_JOB (job)->document, job->page);
	EV_JOB (job)->finished = TRUE;
	ev_document_doc_mutex_unlock ();
}

EvJob *
ev_job_thumbnail_new (EvDocument *document,
		      gint        page,
		      gint        requested_width)
{
	EvJobThumbnail *job;

	job = g_object_new (EV_TYPE_JOB_THUMBNAIL, NULL);

	EV_JOB (job)->document = g_object_ref (document);
	job->page = page;
	job->requested_width = requested_width;

	return EV_JOB (job);
}

void
ev_job_thumbnail_run (EvJobThumbnail *job)
{
	g_return_if_fail (EV_IS_JOB_THUMBNAIL (job));

	ev_document_doc_mutex_lock ();

	job->thumbnail =
		ev_document_thumbnails_get_thumbnail (EV_DOCUMENT_THUMBNAILS (EV_JOB (job)->document),
						      job->page,
						      job->requested_width,
						      TRUE);
	EV_JOB (job)->finished = TRUE;

	ev_document_doc_mutex_unlock ();
}