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
  */

 G_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_free_full(action_layer->layers, g_object_unref);
         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);
     for (GList *l = retval->layers; l != nullptr; l = l->next) {
         g_object_ref(l->data);
     }

     return retval;
 }

 G_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_free_full(action->ocg_state.state_list, (GDestroyNotify)poppler_action_layer_free);
         }
         break;
     case POPPLER_ACTION_JAVASCRIPT:
         if (action->javascript.script) {
             g_free(action->javascript.script);
         }
         break;
     case POPPLER_ACTION_RESET_FORM:
         if (action->reset_form.fields) {
             g_list_free_full(action->reset_form.fields, g_free);
         }
         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;
     case POPPLER_ACTION_RESET_FORM:
         if (action->reset_form.fields) {
             GList *iter;

             new_action->reset_form.fields = nullptr;
             for (iter = action->reset_form.fields; iter != nullptr; iter = iter->next) {
                 new_action->reset_form.fields = g_list_append(new_action->reset_form.fields, g_strdup((char *)iter->data));
             }
         }
         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) {
             const Ref page_ref = link_dest->getPageRef();
             dest->page_num = document->doc->findPage(page_ref);
         } 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;
     }

     const std::string &str = named_dest->toStr();

     dest->type = POPPLER_DEST_NAMED;
     dest->named_dest = poppler_named_dest_from_bytestring((const guint8 *)str.data(), str.size());

     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()->c_str());
     }
     if (link->getParams()) {
         action->launch.params = g_strdup(link->getParams()->c_str());
     }
 }

 static void build_uri(PopplerAction *action, const LinkURI *link)
 {
     const gchar *uri = link->getURI().c_str();
     if (uri != nullptr) {
         action->uri.uri = g_strdup(uri);
     }
 }

 static void build_named(PopplerAction *action, const LinkNamed *link)
 {
     const gchar *name = link->getName().c_str();
     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);
     } else if (link->hasAnnotTitle()) {
         const std::string &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;
                 bool found = false;

                 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() && obj1.getString()->toStr() == title) {
                             found = true;
                         }
                     }
                     if (!found) {
                         annotObj.setToNull();
                     }
                 }
                 if (found) {
                     break;
                 } else {
                     annotObj.setToNull();
                 }
             }
         }
     }

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

         annot = new AnnotMovie(document->doc, std::move(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)
 {
     if (link->isOk()) {
         const GooString script(link->getScript());
         action->javascript.script = _poppler_goo_string_to_utf8(&script);
     }
 }

 static void build_reset_form(PopplerAction *action, const LinkResetForm *link)
 {
     const std::vector<std::string> &fields = link->getFields();

     if (action->reset_form.fields != nullptr) {
         g_list_free_full(action->reset_form.fields, g_free);
     }

     action->reset_form.fields = nullptr;
     for (const auto &field : fields) {
         action->reset_form.fields = g_list_append(action->reset_form.fields, g_strdup(field.c_str()));
     }

     action->reset_form.exclude = link->getExclude();
 }

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

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

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

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

             if (ref == ocgRef) {
                 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 std::vector<LinkOCGState::StateList> &st_list = ocg_state->getStateList();
     bool preserve_rb = ocg_state->getPreserveRB();
     GList *layer_state = nullptr;

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

     for (const LinkOCGState::StateList &list : st_list) {
         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 (const Ref &ref : list.list) {
             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, static_cast<const LinkGoTo *>(link));
         break;
     case actionGoToR:
         action->type = POPPLER_ACTION_GOTO_REMOTE;
         build_goto_remote(action, static_cast<const LinkGoToR *>(link));
         break;
     case actionLaunch:
         action->type = POPPLER_ACTION_LAUNCH;
         build_launch(action, static_cast<const LinkLaunch *>(link));
         break;
     case actionURI:
         action->type = POPPLER_ACTION_URI;
         build_uri(action, static_cast<const LinkURI *>(link));
         break;
     case actionNamed:
         action->type = POPPLER_ACTION_NAMED;
         build_named(action, static_cast<const LinkNamed *>(link));
         break;
     case actionMovie:
         action->type = POPPLER_ACTION_MOVIE;
         build_movie(document, action, static_cast<const LinkMovie *>(link));
         break;
     case actionRendition:
         action->type = POPPLER_ACTION_RENDITION;
         build_rendition(action, static_cast<const LinkRendition *>(link));
         break;
     case actionOCGState:
         action->type = POPPLER_ACTION_OCG_STATE;
         build_ocg_state(document, action, static_cast<const LinkOCGState *>(link));
         break;
     case actionJavaScript:
         action->type = POPPLER_ACTION_JAVASCRIPT;
         build_javascript(action, static_cast<const LinkJavaScript *>(link));
         break;
     case actionResetForm:
         action->type = POPPLER_ACTION_RESET_FORM;
         build_reset_form(action, dynamic_cast<const LinkResetForm *>(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
	*/

	G_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_free_full(action_layer->layers, g_object_unref);
	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);
	for (GList *l = retval->layers; l != nullptr; l = l->next) {
	g_object_ref(l->data);
	}

	return retval;
	}

	G_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_free_full(action->ocg_state.state_list, (GDestroyNotify)poppler_action_layer_free);
	}
	break;
	case POPPLER_ACTION_JAVASCRIPT:
	if (action->javascript.script) {
	g_free(action->javascript.script);
	}
	break;
	case POPPLER_ACTION_RESET_FORM:
	if (action->reset_form.fields) {
	g_list_free_full(action->reset_form.fields, g_free);
	}
	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;
	case POPPLER_ACTION_RESET_FORM:
	if (action->reset_form.fields) {
	GList *iter;

	new_action->reset_form.fields = nullptr;
	for (iter = action->reset_form.fields; iter != nullptr; iter = iter->next) {
	new_action->reset_form.fields = g_list_append(new_action->reset_form.fields, g_strdup((char *)iter->data));
	}
	}
	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) {
	const Ref page_ref = link_dest->getPageRef();
	dest->page_num = document->doc->findPage(page_ref);
	} 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;
	}

	const std::string &str = named_dest->toStr();

	dest->type = POPPLER_DEST_NAMED;
	dest->named_dest = poppler_named_dest_from_bytestring((const guint8 *)str.data(), str.size());

	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()->c_str());
	}
	if (link->getParams()) {
	action->launch.params = g_strdup(link->getParams()->c_str());
	}
	}

	static void build_uri(PopplerAction action, const LinkURI link)
	{
	const gchar *uri = link->getURI().c_str();
	if (uri != nullptr) {
	action->uri.uri = g_strdup(uri);
	}
	}

	static void build_named(PopplerAction action, const LinkNamed link)
	{
	const gchar *name = link->getName().c_str();
	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);
	} else if (link->hasAnnotTitle()) {
	const std::string &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;
	bool found = false;

	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() && obj1.getString()->toStr() == title) {
	found = true;
	}
	}
	if (!found) {
	annotObj.setToNull();
	}
	}
	if (found) {
	break;
	} else {
	annotObj.setToNull();
	}
	}
	}
	}

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

	annot = new AnnotMovie(document->doc, std::move(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)
	{
	if (link->isOk()) {
	const GooString script(link->getScript());
	action->javascript.script = _poppler_goo_string_to_utf8(&script);
	}
	}

	static void build_reset_form(PopplerAction action, const LinkResetForm link)
	{
	const std::vector<std::string> &fields = link->getFields();

	if (action->reset_form.fields != nullptr) {
	g_list_free_full(action->reset_form.fields, g_free);
	}

	action->reset_form.fields = nullptr;
	for (const auto &field : fields) {
	action->reset_form.fields = g_list_append(action->reset_form.fields, g_strdup(field.c_str()));
	}

	action->reset_form.exclude = link->getExclude();
	}

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

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

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

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

	if (ref == ocgRef) {
	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 std::vector<LinkOCGState::StateList> &st_list = ocg_state->getStateList();
	bool preserve_rb = ocg_state->getPreserveRB();
	GList *layer_state = nullptr;

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

	for (const LinkOCGState::StateList &list : st_list) {
	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 (const Ref &ref : list.list) {
	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, static_cast<const LinkGoTo *>(link));
	break;
	case actionGoToR:
	action->type = POPPLER_ACTION_GOTO_REMOTE;
	build_goto_remote(action, static_cast<const LinkGoToR *>(link));
	break;
	case actionLaunch:
	action->type = POPPLER_ACTION_LAUNCH;
	build_launch(action, static_cast<const LinkLaunch *>(link));
	break;
	case actionURI:
	action->type = POPPLER_ACTION_URI;
	build_uri(action, static_cast<const LinkURI *>(link));
	break;
	case actionNamed:
	action->type = POPPLER_ACTION_NAMED;
	build_named(action, static_cast<const LinkNamed *>(link));
	break;
	case actionMovie:
	action->type = POPPLER_ACTION_MOVIE;
	build_movie(document, action, static_cast<const LinkMovie *>(link));
	break;
	case actionRendition:
	action->type = POPPLER_ACTION_RENDITION;
	build_rendition(action, static_cast<const LinkRendition *>(link));
	break;
	case actionOCGState:
	action->type = POPPLER_ACTION_OCG_STATE;
	build_ocg_state(document, action, static_cast<const LinkOCGState *>(link));
	break;
	case actionJavaScript:
	action->type = POPPLER_ACTION_JAVASCRIPT;
	build_javascript(action, static_cast<const LinkJavaScript *>(link));
	break;
	case actionResetForm:
	action->type = POPPLER_ACTION_RESET_FORM;
	build_reset_form(action, dynamic_cast<const LinkResetForm *>(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);
	}