glib/poppler-action.cc - third_party/poppler - Git at Google

 /* poppler-action.cc: glib wrapper for poppler	      -*- c-basic-offset: 8 -*-
  * Copyright (C) 2005, Red Hat, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2, or (at your option)
  * any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  */

 #include "poppler.h"
 #include "poppler-private.h"

 /**
  * SECTION:poppler-action
  * @short_description: Action links
  * @title: PopplerAction
  */

 POPPLER_DEFINE_BOXED_TYPE (PopplerDest, poppler_dest, poppler_dest_copy, poppler_dest_free)

 /**
  * poppler_dest_copy:
  * @dest: a #PopplerDest
  *
  * Copies @dest, creating an identical #PopplerDest.
  *
  * Return value: a new destination identical to @dest
  **/
 PopplerDest *
 poppler_dest_copy (PopplerDest *dest)
 {
 	PopplerDest *new_dest;

 	new_dest = g_slice_dup (PopplerDest, dest);

 	if (dest->named_dest)
 		new_dest->named_dest = g_strdup (dest->named_dest);

 	return new_dest;
 }


 /**
  * poppler_dest_free:
  * @dest: a #PopplerDest
  *
  * Frees @dest
  **/
 void
 poppler_dest_free (PopplerDest *dest)
 {
 	if (!dest)
 		return;

 	if (dest->named_dest)
 		g_free (dest->named_dest);

 	g_slice_free (PopplerDest, dest);
 }

 static void
 poppler_action_layer_free (PopplerActionLayer *action_layer)
 {
 	if (!action_layer)
 		return;

 	if (action_layer->layers) {
 		g_list_foreach (action_layer->layers, (GFunc)g_object_unref, nullptr);
 		g_list_free (action_layer->layers);
 		action_layer->layers = nullptr;
 	}

 	g_slice_free (PopplerActionLayer, action_layer);
 }

 static PopplerActionLayer *
 poppler_action_layer_copy (PopplerActionLayer *action_layer)
 {
 	PopplerActionLayer *retval = g_slice_dup (PopplerActionLayer, action_layer);

 	retval->layers = g_list_copy (action_layer->layers);
 	g_list_foreach (action_layer->layers, (GFunc)g_object_ref, nullptr);

 	return retval;
 }

 POPPLER_DEFINE_BOXED_TYPE (PopplerAction, poppler_action, poppler_action_copy, poppler_action_free)

 /**
  * poppler_action_free:
  * @action: a #PopplerAction
  *
  * Frees @action
  **/
 void
 poppler_action_free (PopplerAction *action)
 {
 	if (action == nullptr)
 		return;

 	/* Action specific stuff */
 	switch (action->type) {
 	case POPPLER_ACTION_GOTO_DEST:
 		poppler_dest_free (action->goto_dest.dest);
 		break;
 	case POPPLER_ACTION_GOTO_REMOTE:
 		poppler_dest_free (action->goto_remote.dest);
 		g_free (action->goto_remote.file_name);
 		break;
 	case POPPLER_ACTION_URI:
 		g_free (action->uri.uri);
 		break;
 	case POPPLER_ACTION_LAUNCH:
 		g_free (action->launch.file_name);
 		g_free (action->launch.params);
 		break;
 	case POPPLER_ACTION_NAMED:
 		g_free (action->named.named_dest);
 		break;
 	case POPPLER_ACTION_MOVIE:
 		if (action->movie.movie)
 			g_object_unref (action->movie.movie);
 		break;
 	case POPPLER_ACTION_RENDITION:
 		if (action->rendition.media)
 			g_object_unref (action->rendition.media);
 		break;
 	case POPPLER_ACTION_OCG_STATE:
 		if (action->ocg_state.state_list) {
 			g_list_foreach (action->ocg_state.state_list, (GFunc)poppler_action_layer_free, nullptr);
 			g_list_free (action->ocg_state.state_list);
 		}
 		break;
 	case POPPLER_ACTION_JAVASCRIPT:
 		if (action->javascript.script)
 			g_free (action->javascript.script);
 		break;
 	default:
 		break;
 	}

 	g_free (action->any.title);
 	g_slice_free (PopplerAction, action);
 }

 /**
  * poppler_action_copy:
  * @action: a #PopplerAction
  *
  * Copies @action, creating an identical #PopplerAction.
  *
  * Return value: a new action identical to @action
  **/
 PopplerAction *
 poppler_action_copy (PopplerAction *action)
 {
 	PopplerAction *new_action;

 	g_return_val_if_fail (action != nullptr, NULL);

 	/* Do a straight copy of the memory */
 	new_action = g_slice_dup (PopplerAction, action);

 	if (action->any.title != nullptr)
 		new_action->any.title = g_strdup (action->any.title);

 	switch (action->type) {
 	case POPPLER_ACTION_GOTO_DEST:
 		new_action->goto_dest.dest = poppler_dest_copy (action->goto_dest.dest);
 		break;
 	case POPPLER_ACTION_GOTO_REMOTE:
 		new_action->goto_remote.dest = poppler_dest_copy (action->goto_remote.dest);
 		if (action->goto_remote.file_name)
 			new_action->goto_remote.file_name = g_strdup (action->goto_remote.file_name);
 		break;
 	case POPPLER_ACTION_URI:
 		if (action->uri.uri)
 			new_action->uri.uri = g_strdup (action->uri.uri);
 		break;
 	case POPPLER_ACTION_LAUNCH:
 		if (action->launch.file_name)
 			new_action->launch.file_name = g_strdup (action->launch.file_name);
 		if (action->launch.params)
 			new_action->launch.params = g_strdup (action->launch.params);
 		break;
 	case POPPLER_ACTION_NAMED:
 		if (action->named.named_dest)
 			new_action->named.named_dest = g_strdup (action->named.named_dest);
 		break;
 	case POPPLER_ACTION_MOVIE:
 		if (action->movie.movie)
 			new_action->movie.movie = (PopplerMovie *)g_object_ref (action->movie.movie);
 		break;
 	case POPPLER_ACTION_RENDITION:
 		if (action->rendition.media)
 			new_action->rendition.media = (PopplerMedia *)g_object_ref (action->rendition.media);
 		break;
 	case POPPLER_ACTION_OCG_STATE:
 		if (action->ocg_state.state_list) {
 			GList *l;
 			GList *new_list = nullptr;

 			for (l = action->ocg_state.state_list; l; l = g_list_next (l)) {
 				PopplerActionLayer *alayer = (PopplerActionLayer *)l->data;
 				new_list = g_list_prepend (new_list, poppler_action_layer_copy (alayer));
 			}

 			new_action->ocg_state.state_list = g_list_reverse (new_list);
 		}

 		break;
 	case POPPLER_ACTION_JAVASCRIPT:
 		if (action->javascript.script)
 			new_action->javascript.script = g_strdup (action->javascript.script);
 		break;
 	default:
 		break;
 	}

 	return new_action;
 }

 static
 PopplerDest *
 dest_new_goto (PopplerDocument *document,
 	       const LinkDest        *link_dest)
 {
 	PopplerDest *dest;

 	dest = g_slice_new0 (PopplerDest);

 	if (link_dest == nullptr) {
 		dest->type = POPPLER_DEST_UNKNOWN;
 		return dest;
 	}

 	switch (link_dest->getKind ()) {
 	case destXYZ:
 		dest->type = POPPLER_DEST_XYZ;
 		break;
 	case destFit:
 		dest->type = POPPLER_DEST_FIT;
 		break;
 	case destFitH:
 		dest->type = POPPLER_DEST_FITH;
 		break;
 	case destFitV:
 		dest->type = POPPLER_DEST_FITV;
 		break;
 	case destFitR:
 		dest->type = POPPLER_DEST_FITR;
 		break;
 	case destFitB:
 		dest->type = POPPLER_DEST_FITB;
 		break;
 	case destFitBH:
 		dest->type = POPPLER_DEST_FITBH;
 		break;
 	case destFitBV:
 		dest->type = POPPLER_DEST_FITBV;
 		break;
 	default:
 		dest->type = POPPLER_DEST_UNKNOWN;
 	}

 	if (link_dest->isPageRef ()) {
 		if (document) {
 			Ref page_ref = link_dest->getPageRef ();
 			dest->page_num = document->doc->findPage (page_ref.num, page_ref.gen);
 		} else {
 			/* FIXME: We don't keep areound the page_ref for the
 			 * remote doc, so we can't look this up.  Guess that
 			 * it's 0*/
 			dest->page_num = 0;
 		}
 	} else {
 		dest->page_num = link_dest->getPageNum ();
 	}

 	dest->left = link_dest->getLeft ();
 	dest->bottom = link_dest->getBottom ();
 	dest->right = link_dest->getRight ();
 	dest->top = link_dest->getTop ();
 	dest->zoom = link_dest->getZoom ();
 	dest->change_left = link_dest->getChangeLeft ();
 	dest->change_top = link_dest->getChangeTop ();
 	dest->change_zoom = link_dest->getChangeZoom ();

 	if (document && dest->page_num > 0) {
 		PopplerPage *page;

 		page = poppler_document_get_page (document, dest->page_num - 1);

 		if (page) {
 			dest->left -= page->page->getCropBox ()->x1;
 			dest->bottom -= page->page->getCropBox ()->x1;
 			dest->right -= page->page->getCropBox ()->y1;
 			dest->top -= page->page->getCropBox ()->y1;

 			g_object_unref (page);
 		} else {
 			g_warning ("Invalid page %d in Link Destination\n", dest->page_num);
 			dest->page_num = 0;
 		}
 	}

 	return dest;
 }

 static PopplerDest *
 dest_new_named (const GooString *named_dest)
 {
 	PopplerDest *dest;

 	dest = g_slice_new0 (PopplerDest);

 	if (named_dest == nullptr) {
 		dest->type = POPPLER_DEST_UNKNOWN;
 		return dest;
 	}

 	dest->type = POPPLER_DEST_NAMED;
 	dest->named_dest = g_strdup (named_dest->getCString ());

 	return dest;
 }

 static void
 build_goto_dest (PopplerDocument *document,
 		 PopplerAction   *action,
 		 const LinkGoTo        *link)
 {
 	const LinkDest *link_dest;
 	const GooString *named_dest;

 	/* Return if it isn't OK */
 	if (! link->isOk ()) {
 		action->goto_dest.dest = dest_new_goto (nullptr, nullptr);
 		return;
 	}

 	link_dest = link->getDest ();
 	named_dest = link->getNamedDest ();

 	if (link_dest != nullptr) {
 		action->goto_dest.dest = dest_new_goto (document, link_dest);
 	} else if (named_dest != nullptr) {
 		action->goto_dest.dest = dest_new_named (named_dest);
 	} else {
 		action->goto_dest.dest = dest_new_goto (document, nullptr);
 	}
 }

 static void
 build_goto_remote (PopplerAction *action,
 		   const LinkGoToR     *link)
 {
 	const LinkDest *link_dest;
 	const GooString *named_dest;

 	/* Return if it isn't OK */
 	if (! link->isOk ()) {
 		action->goto_remote.dest = dest_new_goto (nullptr, nullptr);
 		return;
 	}

 	action->goto_remote.file_name = _poppler_goo_string_to_utf8 (link->getFileName());

 	link_dest = link->getDest ();
 	named_dest = link->getNamedDest ();

 	if (link_dest != nullptr) {
 		action->goto_remote.dest = dest_new_goto (nullptr, link_dest);
 	} else if (named_dest != nullptr) {
 		action->goto_remote.dest = dest_new_named (named_dest);
 	} else {
 		action->goto_remote.dest = dest_new_goto (nullptr, nullptr);
 	}
 }

 static void
 build_launch (PopplerAction *action,
 	      const LinkLaunch    *link)
 {
 	if (link->getFileName()) {
 		action->launch.file_name = g_strdup (link->getFileName()->getCString ());
 	}
 	if (link->getParams()) {
 		action->launch.params = g_strdup (link->getParams()->getCString ());
 	}
 }

 static void
 build_uri (PopplerAction *action,
 	   const LinkURI       *link)
 {
 	const gchar *uri;

 	uri = link->getURI()->getCString ();
 	if (uri != nullptr)
 		action->uri.uri = g_strdup (uri);
 }

 static void
 build_named (PopplerAction *action,
 	     const LinkNamed     *link)
 {
 	const gchar *name;

 	name = link->getName ()->getCString ();
 	if (name != nullptr)
 		action->named.named_dest = g_strdup (name);
 }

 static AnnotMovie *
 find_annot_movie_for_action (PopplerDocument *document,
 			     const LinkMovie       *link)
 {
   AnnotMovie *annot = nullptr;
   XRef *xref = document->doc->getXRef ();
   Object annotObj;

   if (link->hasAnnotRef ()) {
     const Ref *ref = link->getAnnotRef ();

     annotObj = xref->fetch (ref->num, ref->gen);
   } else if (link->hasAnnotTitle ()) {
     const GooString *title = link->getAnnotTitle ();
     int i;

     for (i = 1; i <= document->doc->getNumPages (); ++i) {
       Page *p = document->doc->getPage (i);
       if (!p) continue;

       Object annots = p->getAnnotsObject ();
       if (annots.isArray ()) {
         int j;
 	GBool found = gFalse;

 	for (j = 0; j < annots.arrayGetLength () && !found; ++j) {
           annotObj = annots.arrayGet(j);
           if (annotObj.isDict()) {
 	    Object obj1 = annotObj.dictLookup ("Subtype");
 	    if (!obj1.isName ("Movie")) {
 	      continue;
 	    }

 	    obj1 = annotObj.dictLookup ("T");
 	    if (obj1.isString()) {
 	      const GooString *t = obj1.getString ();

 	      if (title->cmp(t) == 0)
 	        found = gTrue;
 	    }
 	  }
 	  if (!found)
 	    annotObj.setToNull ();
 	}
 	if (found) {
 	  break;
 	} else {
           annotObj.setToNull ();
 	}
       }
     }
   }

   if (annotObj.isDict ()) {
     Object tmp;

     annot = new AnnotMovie (document->doc, &annotObj, &tmp);
     if (!annot->isOk ()) {
       delete annot;
       annot = nullptr;
     }
   }

   return annot;
 }

 static void
 build_movie (PopplerDocument *document,
 	     PopplerAction   *action,
 	     const LinkMovie       *link)
 {
 	AnnotMovie *annot;

 	switch (link->getOperation ()) {
 	case LinkMovie::operationTypePause:
 		action->movie.operation = POPPLER_ACTION_MOVIE_PAUSE;
 		break;
 	case LinkMovie::operationTypeResume:
 		action->movie.operation = POPPLER_ACTION_MOVIE_RESUME;
 		break;
 	case LinkMovie::operationTypeStop:
 		action->movie.operation = POPPLER_ACTION_MOVIE_STOP;
 		break;
 	default:
 	case LinkMovie::operationTypePlay:
 		action->movie.operation = POPPLER_ACTION_MOVIE_PLAY;
 		break;
 	}

 	annot = find_annot_movie_for_action (document, link);
 	if (annot) {
 		action->movie.movie = _poppler_movie_new (annot->getMovie());
 		delete annot;
 	}
 }

 static void
 build_javascript (PopplerAction *action,
 		  const LinkJavaScript *link)
 {
 	const GooString *script;

 	script = link->getScript();
 	if (script)
 		action->javascript.script = _poppler_goo_string_to_utf8 (script);

 }

 static void
 build_rendition (PopplerAction *action,
 		 const LinkRendition *link)
 {
 	action->rendition.op = link->getOperation();
 	if (link->hasRenditionObject())
 		action->rendition.media = _poppler_media_new (link->getMedia());
 	// TODO: annotation reference
 }

 static PopplerLayer *
 get_layer_for_ref (PopplerDocument *document,
 		   GList           *layers,
 		   Ref             *ref,
 		   gboolean         preserve_rb)
 {
 	GList *l;

 	for (l = layers; l; l = g_list_next (l)) {
 		Layer *layer = (Layer *)l->data;

 		if (layer->oc) {
 			Ref ocgRef = layer->oc->getRef();

 			if (ref->num == ocgRef.num && ref->gen == ocgRef.gen) {
 				GList *rb_group = nullptr;

 				if (preserve_rb)
 					rb_group = _poppler_document_get_layer_rbgroup (document, layer);
 				return _poppler_layer_new (document, layer, rb_group);
 			}
 		}

 		if (layer->kids) {
 			PopplerLayer *retval = get_layer_for_ref (document, layer->kids, ref, preserve_rb);
 			if (retval)
 				return retval;
 		}
 	}

 	return nullptr;
 }

 static void
 build_ocg_state (PopplerDocument *document,
 		 PopplerAction   *action,
 		 const LinkOCGState    *ocg_state)
 {
 	const GooList *st_list = ocg_state->getStateList();
 	GBool    preserve_rb = ocg_state->getPreserveRB();
 	gint     i, j;
 	GList   *layer_state = nullptr;

 	if (!document->layers) {
 		if (!_poppler_document_get_layers (document))
 			return;
 	}

 	for (i = 0; i < st_list->getLength(); ++i) {
 		LinkOCGState::StateList *list = (LinkOCGState::StateList *)st_list->get(i);
 		PopplerActionLayer *action_layer = g_slice_new0 (PopplerActionLayer);

 		switch (list->st) {
 		case LinkOCGState::On:
 			action_layer->action = POPPLER_ACTION_LAYER_ON;
 			break;
 		case LinkOCGState::Off:
 			action_layer->action = POPPLER_ACTION_LAYER_OFF;
 			break;
 		case LinkOCGState::Toggle:
 			action_layer->action = POPPLER_ACTION_LAYER_TOGGLE;
 			break;
 		}

 		for (j = 0; j < list->list->getLength(); ++j) {
 			Ref *ref = (Ref *)list->list->get(j);
 			PopplerLayer *layer = get_layer_for_ref (document, document->layers, ref, preserve_rb);

 			action_layer->layers = g_list_prepend (action_layer->layers, layer);
 		}

 		layer_state = g_list_prepend (layer_state, action_layer);
 	}

 	action->ocg_state.state_list = g_list_reverse (layer_state);
 }

 PopplerAction *
 _poppler_action_new (PopplerDocument *document,
 		     const LinkAction      *link,
 		     const gchar     *title)
 {
 	PopplerAction *action;

 	action = g_slice_new0 (PopplerAction);

 	if (title)
 		action->any.title = g_strdup (title);

 	if (link == nullptr) {
 		action->type = POPPLER_ACTION_NONE;
 		return action;
 	}

 	switch (link->getKind ()) {
 	case actionGoTo:
 		action->type = POPPLER_ACTION_GOTO_DEST;
 		build_goto_dest (document, action, dynamic_cast <const LinkGoTo *> (link));
 		break;
 	case actionGoToR:
 		action->type = POPPLER_ACTION_GOTO_REMOTE;
 		build_goto_remote (action, dynamic_cast <const LinkGoToR *> (link));
 		break;
 	case actionLaunch:
 		action->type = POPPLER_ACTION_LAUNCH;
 		build_launch (action, dynamic_cast <const LinkLaunch *> (link));
 		break;
 	case actionURI:
 		action->type = POPPLER_ACTION_URI;
 		build_uri (action, dynamic_cast <const LinkURI *> (link));
 		break;
 	case actionNamed:
 		action->type = POPPLER_ACTION_NAMED;
 		build_named (action, dynamic_cast <const LinkNamed *> (link));
 		break;
 	case actionMovie:
 		action->type = POPPLER_ACTION_MOVIE;
 		build_movie (document, action, dynamic_cast<const LinkMovie*> (link));
 		break;
 	case actionRendition:
 		action->type = POPPLER_ACTION_RENDITION;
 		build_rendition (action, dynamic_cast<const LinkRendition*> (link));
 		break;
 	case actionOCGState:
 		action->type = POPPLER_ACTION_OCG_STATE;
 		build_ocg_state (document, action, dynamic_cast<const LinkOCGState*> (link));
 		break;
 	case actionJavaScript:
 		action->type = POPPLER_ACTION_JAVASCRIPT;
 		build_javascript (action, dynamic_cast<const LinkJavaScript*> (link));
 		break;
 	case actionUnknown:
 	default:
 		action->type = POPPLER_ACTION_UNKNOWN;
 		break;
 	}

 	return action;
 }

 PopplerDest *
 _poppler_dest_new_goto (PopplerDocument *document,
 			LinkDest        *link_dest)
 {
 	return dest_new_goto (document, link_dest);
 }
	/* poppler-action.cc: glib wrapper for poppler -- c-basic-offset: 8 --
	* Copyright (C) 2005, Red Hat, Inc.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2, or (at your option)
	* any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
	*/

	#include "poppler.h"
	#include "poppler-private.h"

	/**
	* SECTION:poppler-action
	* @short_description: Action links
	* @title: PopplerAction
	*/

	POPPLER_DEFINE_BOXED_TYPE (PopplerDest, poppler_dest, poppler_dest_copy, poppler_dest_free)

	/**
	* poppler_dest_copy:
	* @dest: a #PopplerDest
	*
	* Copies @dest, creating an identical #PopplerDest.
	*
	* Return value: a new destination identical to @dest
	**/
	PopplerDest *
	poppler_dest_copy (PopplerDest *dest)
	{
	PopplerDest *new_dest;

	new_dest = g_slice_dup (PopplerDest, dest);

	if (dest->named_dest)
	new_dest->named_dest = g_strdup (dest->named_dest);

	return new_dest;
	}


	/**
	* poppler_dest_free:
	* @dest: a #PopplerDest
	*
	* Frees @dest
	**/
	void
	poppler_dest_free (PopplerDest *dest)
	{
	if (!dest)
	return;

	if (dest->named_dest)
	g_free (dest->named_dest);

	g_slice_free (PopplerDest, dest);
	}

	static void
	poppler_action_layer_free (PopplerActionLayer *action_layer)
	{
	if (!action_layer)
	return;

	if (action_layer->layers) {
	g_list_foreach (action_layer->layers, (GFunc)g_object_unref, nullptr);
	g_list_free (action_layer->layers);
	action_layer->layers = nullptr;
	}

	g_slice_free (PopplerActionLayer, action_layer);
	}

	static PopplerActionLayer *
	poppler_action_layer_copy (PopplerActionLayer *action_layer)
	{
	PopplerActionLayer *retval = g_slice_dup (PopplerActionLayer, action_layer);

	retval->layers = g_list_copy (action_layer->layers);
	g_list_foreach (action_layer->layers, (GFunc)g_object_ref, nullptr);

	return retval;
	}

	POPPLER_DEFINE_BOXED_TYPE (PopplerAction, poppler_action, poppler_action_copy, poppler_action_free)

	/**
	* poppler_action_free:
	* @action: a #PopplerAction
	*
	* Frees @action
	**/
	void
	poppler_action_free (PopplerAction *action)
	{
	if (action == nullptr)
	return;

	/* Action specific stuff */
	switch (action->type) {
	case POPPLER_ACTION_GOTO_DEST:
	poppler_dest_free (action->goto_dest.dest);
	break;
	case POPPLER_ACTION_GOTO_REMOTE:
	poppler_dest_free (action->goto_remote.dest);
	g_free (action->goto_remote.file_name);
	break;
	case POPPLER_ACTION_URI:
	g_free (action->uri.uri);
	break;
	case POPPLER_ACTION_LAUNCH:
	g_free (action->launch.file_name);
	g_free (action->launch.params);
	break;
	case POPPLER_ACTION_NAMED:
	g_free (action->named.named_dest);
	break;
	case POPPLER_ACTION_MOVIE:
	if (action->movie.movie)
	g_object_unref (action->movie.movie);
	break;
	case POPPLER_ACTION_RENDITION:
	if (action->rendition.media)
	g_object_unref (action->rendition.media);
	break;
	case POPPLER_ACTION_OCG_STATE:
	if (action->ocg_state.state_list) {
	g_list_foreach (action->ocg_state.state_list, (GFunc)poppler_action_layer_free, nullptr);
	g_list_free (action->ocg_state.state_list);
	}
	break;
	case POPPLER_ACTION_JAVASCRIPT:
	if (action->javascript.script)
	g_free (action->javascript.script);
	break;
	default:
	break;
	}

	g_free (action->any.title);
	g_slice_free (PopplerAction, action);
	}

	/**
	* poppler_action_copy:
	* @action: a #PopplerAction
	*
	* Copies @action, creating an identical #PopplerAction.
	*
	* Return value: a new action identical to @action
	**/
	PopplerAction *
	poppler_action_copy (PopplerAction *action)
	{
	PopplerAction *new_action;

	g_return_val_if_fail (action != nullptr, NULL);

	/* Do a straight copy of the memory */
	new_action = g_slice_dup (PopplerAction, action);

	if (action->any.title != nullptr)
	new_action->any.title = g_strdup (action->any.title);

	switch (action->type) {
	case POPPLER_ACTION_GOTO_DEST:
	new_action->goto_dest.dest = poppler_dest_copy (action->goto_dest.dest);
	break;
	case POPPLER_ACTION_GOTO_REMOTE:
	new_action->goto_remote.dest = poppler_dest_copy (action->goto_remote.dest);
	if (action->goto_remote.file_name)
	new_action->goto_remote.file_name = g_strdup (action->goto_remote.file_name);
	break;
	case POPPLER_ACTION_URI:
	if (action->uri.uri)
	new_action->uri.uri = g_strdup (action->uri.uri);
	break;
	case POPPLER_ACTION_LAUNCH:
	if (action->launch.file_name)
	new_action->launch.file_name = g_strdup (action->launch.file_name);
	if (action->launch.params)
	new_action->launch.params = g_strdup (action->launch.params);
	break;
	case POPPLER_ACTION_NAMED:
	if (action->named.named_dest)
	new_action->named.named_dest = g_strdup (action->named.named_dest);
	break;
	case POPPLER_ACTION_MOVIE:
	if (action->movie.movie)
	new_action->movie.movie = (PopplerMovie *)g_object_ref (action->movie.movie);
	break;
	case POPPLER_ACTION_RENDITION:
	if (action->rendition.media)
	new_action->rendition.media = (PopplerMedia *)g_object_ref (action->rendition.media);
	break;
	case POPPLER_ACTION_OCG_STATE:
	if (action->ocg_state.state_list) {
	GList *l;
	GList *new_list = nullptr;

	for (l = action->ocg_state.state_list; l; l = g_list_next (l)) {
	PopplerActionLayer alayer = (PopplerActionLayer )l->data;
	new_list = g_list_prepend (new_list, poppler_action_layer_copy (alayer));
	}

	new_action->ocg_state.state_list = g_list_reverse (new_list);
	}

	break;
	case POPPLER_ACTION_JAVASCRIPT:
	if (action->javascript.script)
	new_action->javascript.script = g_strdup (action->javascript.script);
	break;
	default:
	break;
	}

	return new_action;
	}

	static
	PopplerDest *
	dest_new_goto (PopplerDocument *document,
	const LinkDest *link_dest)
	{
	PopplerDest *dest;

	dest = g_slice_new0 (PopplerDest);

	if (link_dest == nullptr) {
	dest->type = POPPLER_DEST_UNKNOWN;
	return dest;
	}

	switch (link_dest->getKind ()) {
	case destXYZ:
	dest->type = POPPLER_DEST_XYZ;
	break;
	case destFit:
	dest->type = POPPLER_DEST_FIT;
	break;
	case destFitH:
	dest->type = POPPLER_DEST_FITH;
	break;
	case destFitV:
	dest->type = POPPLER_DEST_FITV;
	break;
	case destFitR:
	dest->type = POPPLER_DEST_FITR;
	break;
	case destFitB:
	dest->type = POPPLER_DEST_FITB;
	break;
	case destFitBH:
	dest->type = POPPLER_DEST_FITBH;
	break;
	case destFitBV:
	dest->type = POPPLER_DEST_FITBV;
	break;
	default:
	dest->type = POPPLER_DEST_UNKNOWN;
	}

	if (link_dest->isPageRef ()) {
	if (document) {
	Ref page_ref = link_dest->getPageRef ();
	dest->page_num = document->doc->findPage (page_ref.num, page_ref.gen);
	} else {
	/* FIXME: We don't keep areound the page_ref for the
	* remote doc, so we can't look this up. Guess that
	* it's 0*/
	dest->page_num = 0;
	}
	} else {
	dest->page_num = link_dest->getPageNum ();
	}

	dest->left = link_dest->getLeft ();
	dest->bottom = link_dest->getBottom ();
	dest->right = link_dest->getRight ();
	dest->top = link_dest->getTop ();
	dest->zoom = link_dest->getZoom ();
	dest->change_left = link_dest->getChangeLeft ();
	dest->change_top = link_dest->getChangeTop ();
	dest->change_zoom = link_dest->getChangeZoom ();

	if (document && dest->page_num > 0) {
	PopplerPage *page;

	page = poppler_document_get_page (document, dest->page_num - 1);

	if (page) {
	dest->left -= page->page->getCropBox ()->x1;
	dest->bottom -= page->page->getCropBox ()->x1;
	dest->right -= page->page->getCropBox ()->y1;
	dest->top -= page->page->getCropBox ()->y1;

	g_object_unref (page);
	} else {
	g_warning ("Invalid page %d in Link Destination\n", dest->page_num);
	dest->page_num = 0;
	}
	}

	return dest;
	}

	static PopplerDest *
	dest_new_named (const GooString *named_dest)
	{
	PopplerDest *dest;

	dest = g_slice_new0 (PopplerDest);

	if (named_dest == nullptr) {
	dest->type = POPPLER_DEST_UNKNOWN;
	return dest;
	}

	dest->type = POPPLER_DEST_NAMED;
	dest->named_dest = g_strdup (named_dest->getCString ());

	return dest;
	}

	static void
	build_goto_dest (PopplerDocument *document,
	PopplerAction *action,
	const LinkGoTo *link)
	{
	const LinkDest *link_dest;
	const GooString *named_dest;

	/* Return if it isn't OK */
	if (! link->isOk ()) {
	action->goto_dest.dest = dest_new_goto (nullptr, nullptr);
	return;
	}

	link_dest = link->getDest ();
	named_dest = link->getNamedDest ();

	if (link_dest != nullptr) {
	action->goto_dest.dest = dest_new_goto (document, link_dest);
	} else if (named_dest != nullptr) {
	action->goto_dest.dest = dest_new_named (named_dest);
	} else {
	action->goto_dest.dest = dest_new_goto (document, nullptr);
	}
	}

	static void
	build_goto_remote (PopplerAction *action,
	const LinkGoToR *link)
	{
	const LinkDest *link_dest;
	const GooString *named_dest;

	/* Return if it isn't OK */
	if (! link->isOk ()) {
	action->goto_remote.dest = dest_new_goto (nullptr, nullptr);
	return;
	}

	action->goto_remote.file_name = _poppler_goo_string_to_utf8 (link->getFileName());

	link_dest = link->getDest ();
	named_dest = link->getNamedDest ();

	if (link_dest != nullptr) {
	action->goto_remote.dest = dest_new_goto (nullptr, link_dest);
	} else if (named_dest != nullptr) {
	action->goto_remote.dest = dest_new_named (named_dest);
	} else {
	action->goto_remote.dest = dest_new_goto (nullptr, nullptr);
	}
	}

	static void
	build_launch (PopplerAction *action,
	const LinkLaunch *link)
	{
	if (link->getFileName()) {
	action->launch.file_name = g_strdup (link->getFileName()->getCString ());
	}
	if (link->getParams()) {
	action->launch.params = g_strdup (link->getParams()->getCString ());
	}
	}

	static void
	build_uri (PopplerAction *action,
	const LinkURI *link)
	{
	const gchar *uri;

	uri = link->getURI()->getCString ();
	if (uri != nullptr)
	action->uri.uri = g_strdup (uri);
	}

	static void
	build_named (PopplerAction *action,
	const LinkNamed *link)
	{
	const gchar *name;

	name = link->getName ()->getCString ();
	if (name != nullptr)
	action->named.named_dest = g_strdup (name);
	}

	static AnnotMovie *
	find_annot_movie_for_action (PopplerDocument *document,
	const LinkMovie *link)
	{
	AnnotMovie *annot = nullptr;
	XRef *xref = document->doc->getXRef ();
	Object annotObj;

	if (link->hasAnnotRef ()) {
	const Ref *ref = link->getAnnotRef ();

	annotObj = xref->fetch (ref->num, ref->gen);
	} else if (link->hasAnnotTitle ()) {
	const GooString *title = link->getAnnotTitle ();
	int i;

	for (i = 1; i <= document->doc->getNumPages (); ++i) {
	Page *p = document->doc->getPage (i);
	if (!p) continue;

	Object annots = p->getAnnotsObject ();
	if (annots.isArray ()) {
	int j;
	GBool found = gFalse;

	for (j = 0; j < annots.arrayGetLength () && !found; ++j) {
	annotObj = annots.arrayGet(j);
	if (annotObj.isDict()) {
	Object obj1 = annotObj.dictLookup ("Subtype");
	if (!obj1.isName ("Movie")) {
	continue;
	}

	obj1 = annotObj.dictLookup ("T");
	if (obj1.isString()) {
	const GooString *t = obj1.getString ();

	if (title->cmp(t) == 0)
	found = gTrue;
	}
	}
	if (!found)
	annotObj.setToNull ();
	}
	if (found) {
	break;
	} else {
	annotObj.setToNull ();
	}
	}
	}
	}

	if (annotObj.isDict ()) {
	Object tmp;

	annot = new AnnotMovie (document->doc, &annotObj, &tmp);
	if (!annot->isOk ()) {
	delete annot;
	annot = nullptr;
	}
	}

	return annot;
	}

	static void
	build_movie (PopplerDocument *document,
	PopplerAction *action,
	const LinkMovie *link)
	{
	AnnotMovie *annot;

	switch (link->getOperation ()) {
	case LinkMovie::operationTypePause:
	action->movie.operation = POPPLER_ACTION_MOVIE_PAUSE;
	break;
	case LinkMovie::operationTypeResume:
	action->movie.operation = POPPLER_ACTION_MOVIE_RESUME;
	break;
	case LinkMovie::operationTypeStop:
	action->movie.operation = POPPLER_ACTION_MOVIE_STOP;
	break;
	default:
	case LinkMovie::operationTypePlay:
	action->movie.operation = POPPLER_ACTION_MOVIE_PLAY;
	break;
	}

	annot = find_annot_movie_for_action (document, link);
	if (annot) {
	action->movie.movie = _poppler_movie_new (annot->getMovie());
	delete annot;
	}
	}

	static void
	build_javascript (PopplerAction *action,
	const LinkJavaScript *link)
	{
	const GooString *script;

	script = link->getScript();
	if (script)
	action->javascript.script = _poppler_goo_string_to_utf8 (script);

	}

	static void
	build_rendition (PopplerAction *action,
	const LinkRendition *link)
	{
	action->rendition.op = link->getOperation();
	if (link->hasRenditionObject())
	action->rendition.media = _poppler_media_new (link->getMedia());
	// TODO: annotation reference
	}

	static PopplerLayer *
	get_layer_for_ref (PopplerDocument *document,
	GList *layers,
	Ref *ref,
	gboolean preserve_rb)
	{
	GList *l;

	for (l = layers; l; l = g_list_next (l)) {
	Layer layer = (Layer )l->data;

	if (layer->oc) {
	Ref ocgRef = layer->oc->getRef();

	if (ref->num == ocgRef.num && ref->gen == ocgRef.gen) {
	GList *rb_group = nullptr;

	if (preserve_rb)
	rb_group = _poppler_document_get_layer_rbgroup (document, layer);
	return _poppler_layer_new (document, layer, rb_group);
	}
	}

	if (layer->kids) {
	PopplerLayer *retval = get_layer_for_ref (document, layer->kids, ref, preserve_rb);
	if (retval)
	return retval;
	}
	}

	return nullptr;
	}

	static void
	build_ocg_state (PopplerDocument *document,
	PopplerAction *action,
	const LinkOCGState *ocg_state)
	{
	const GooList *st_list = ocg_state->getStateList();
	GBool preserve_rb = ocg_state->getPreserveRB();
	gint i, j;
	GList *layer_state = nullptr;

	if (!document->layers) {
	if (!_poppler_document_get_layers (document))
	return;
	}

	for (i = 0; i < st_list->getLength(); ++i) {
	LinkOCGState::StateList list = (LinkOCGState::StateList )st_list->get(i);
	PopplerActionLayer *action_layer = g_slice_new0 (PopplerActionLayer);

	switch (list->st) {
	case LinkOCGState::On:
	action_layer->action = POPPLER_ACTION_LAYER_ON;
	break;
	case LinkOCGState::Off:
	action_layer->action = POPPLER_ACTION_LAYER_OFF;
	break;
	case LinkOCGState::Toggle:
	action_layer->action = POPPLER_ACTION_LAYER_TOGGLE;
	break;
	}

	for (j = 0; j < list->list->getLength(); ++j) {
	Ref ref = (Ref )list->list->get(j);
	PopplerLayer *layer = get_layer_for_ref (document, document->layers, ref, preserve_rb);

	action_layer->layers = g_list_prepend (action_layer->layers, layer);
	}

	layer_state = g_list_prepend (layer_state, action_layer);
	}

	action->ocg_state.state_list = g_list_reverse (layer_state);
	}

	PopplerAction *
	_poppler_action_new (PopplerDocument *document,
	const LinkAction *link,
	const gchar *title)
	{
	PopplerAction *action;

	action = g_slice_new0 (PopplerAction);

	if (title)
	action->any.title = g_strdup (title);

	if (link == nullptr) {
	action->type = POPPLER_ACTION_NONE;
	return action;
	}

	switch (link->getKind ()) {
	case actionGoTo:
	action->type = POPPLER_ACTION_GOTO_DEST;
	build_goto_dest (document, action, dynamic_cast <const LinkGoTo *> (link));
	break;
	case actionGoToR:
	action->type = POPPLER_ACTION_GOTO_REMOTE;
	build_goto_remote (action, dynamic_cast <const LinkGoToR *> (link));
	break;
	case actionLaunch:
	action->type = POPPLER_ACTION_LAUNCH;
	build_launch (action, dynamic_cast <const LinkLaunch *> (link));
	break;
	case actionURI:
	action->type = POPPLER_ACTION_URI;
	build_uri (action, dynamic_cast <const LinkURI *> (link));
	break;
	case actionNamed:
	action->type = POPPLER_ACTION_NAMED;
	build_named (action, dynamic_cast <const LinkNamed *> (link));
	break;
	case actionMovie:
	action->type = POPPLER_ACTION_MOVIE;
	build_movie (document, action, dynamic_cast<const LinkMovie*> (link));
	break;
	case actionRendition:
	action->type = POPPLER_ACTION_RENDITION;
	build_rendition (action, dynamic_cast<const LinkRendition*> (link));
	break;
	case actionOCGState:
	action->type = POPPLER_ACTION_OCG_STATE;
	build_ocg_state (document, action, dynamic_cast<const LinkOCGState*> (link));
	break;
	case actionJavaScript:
	action->type = POPPLER_ACTION_JAVASCRIPT;
	build_javascript (action, dynamic_cast<const LinkJavaScript*> (link));
	break;
	case actionUnknown:
	default:
	action->type = POPPLER_ACTION_UNKNOWN;
	break;
	}

	return action;
	}

	PopplerDest *
	_poppler_dest_new_goto (PopplerDocument *document,
	LinkDest *link_dest)
	{
	return dest_new_goto (document, link_dest);
	}