glib: Add ability to reset forms

Add new PopplerActionType POPPLER_ACTION_RESET_FORM and
its handling to PopplerAction.
Add poppler_document_reset_form() to PopplerDocument.

6 files changed, 95 insertions, 1 deletions

diff --git a/glib/demo/utils.c b/glib/demo/utils.c
index 2d754b09..24e5ebaf 100644
--- a/glib/demo/utils.c
+++ b/glib/demo/utils.c
@@ -475,6 +475,9 @@ pgd_action_view_set_action (GtkWidget     *action_view,
                 gtk_widget_show (swindow);
         }
                 break;
+	case POPPLER_ACTION_RESET_FORM:
+		pgd_table_add_property (GTK_GRID (table), "<b>Type:</b>", "ResetForm", &row);
+		break;
 	default:
 		g_assert_not_reached ();
 	}
diff --git a/glib/poppler-action.cc b/glib/poppler-action.cc
index f9228897..442b05b7 100644
--- a/glib/poppler-action.cc
+++ b/glib/poppler-action.cc
@@ -143,6 +143,10 @@ poppler_action_free (PopplerAction *action)
 		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;
 	}
@@ -221,6 +225,16 @@ poppler_action_copy (PopplerAction *action)
 		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;
 	}
@@ -520,7 +534,23 @@ build_javascript (PopplerAction *action,
 	        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
@@ -661,6 +691,10 @@ _poppler_action_new (PopplerDocument *document,
 		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;
diff --git a/glib/poppler-action.h b/glib/poppler-action.h
index 93a026be..7e60e0b4 100644
--- a/glib/poppler-action.h
+++ b/glib/poppler-action.h
@@ -37,6 +37,7 @@ G_BEGIN_DECLS
  * @POPPLER_ACTION_RENDITION: play multimedia content. Since 0.14
  * @POPPLER_ACTION_OCG_STATE: state of layer. Since 0.14
  * @POPPLER_ACTION_JAVASCRIPT: Javascript. Since 0.18
+ * @POPPLER_ACTION_RESET_FORM: resets form. Since 0.90
  *
  * Action types
  */
@@ -52,7 +53,8 @@ typedef enum
 	POPPLER_ACTION_MOVIE,		/* movie action */
 	POPPLER_ACTION_RENDITION,       /* rendition action */
 	POPPLER_ACTION_OCG_STATE,       /* Set-OCG-State action */
-	POPPLER_ACTION_JAVASCRIPT	/* Javascript action */
+	POPPLER_ACTION_JAVASCRIPT,	/* Javascript action */
+	POPPLER_ACTION_RESET_FORM	/* ResetForm action */
 } PopplerActionType;
 
 /**
@@ -148,6 +150,7 @@ typedef struct _PopplerActionMovie      PopplerActionMovie;
 typedef struct _PopplerActionRendition  PopplerActionRendition;
 typedef struct _PopplerActionOCGState   PopplerActionOCGState;
 typedef struct _PopplerActionJavascript PopplerActionJavascript;
+typedef struct _PopplerActionResetForm  PopplerActionResetForm;
 
 /**
  * PopplerDest:
@@ -284,6 +287,15 @@ struct _PopplerActionJavascript
 	gchar		  *script;
 };
 
+struct _PopplerActionResetForm
+{
+	PopplerActionType  type;
+	gchar             *title;
+
+	GList             *fields;
+	gboolean           exclude;
+};
+
 /**
  * PopplerAction:
  *
@@ -302,6 +314,7 @@ union _PopplerAction
 	PopplerActionRendition rendition;
 	PopplerActionOCGState ocg_state;
 	PopplerActionJavascript javascript;
+	PopplerActionResetForm reset_form;
 };
 
 #define POPPLER_TYPE_ACTION             (poppler_action_get_type ())
diff --git a/glib/poppler-document.cc b/glib/poppler-document.cc
index 9a767df1..95400d89 100644
--- a/glib/poppler-document.cc
+++ b/glib/poppler-document.cc
@@ -2002,6 +2002,44 @@ poppler_document_get_metadata (PopplerDocument *document)
   return retval;
 }
 
+/**
+ * poppler_document_reset_form:
+ * @document: A #PopplerDocument
+ * @fields: list of fields to reset
+ * @exclude_fields: whether to reset all fields except those in @fields
+ *
+ * Resets the form fields specified by fields if exclude_fields is FALSE.
+ * Resets all others if exclude_fields is TRUE.
+ * All form fields are reset regardless of the exclude_fields flag
+ * if fields is empty.
+ *
+ * Since: 0.90
+ **/
+void
+poppler_document_reset_form (PopplerDocument *document,
+                             GList           *fields,
+                             gboolean         exclude_fields)
+{
+  std::vector<std::string>  list;
+  Catalog                  *catalog;
+  GList                    *iter;
+  Form                     *form;
+
+  g_return_if_fail (POPPLER_IS_DOCUMENT (document));
+
+  catalog = document->doc->getCatalog ();
+  if (catalog && catalog->isOk ()) {
+    form = catalog->getForm ();
+
+    if (form) {
+      for (iter = fields; iter != nullptr; iter = iter->next)
+        list.emplace_back (std::string ((char *) iter->data));
+
+      form->reset (list, exclude_fields);
+    }
+  }
+}
+
 static void
 poppler_document_get_property (GObject    *object,
 			       guint       prop_id,
diff --git a/glib/poppler-document.h b/glib/poppler-document.h
index 98dae9a3..570504f2 100644
--- a/glib/poppler-document.h
+++ b/glib/poppler-document.h
@@ -426,6 +426,11 @@ POPPLER_PUBLIC
 PopplerFormField  *poppler_document_get_form_field         (PopplerDocument  *document,
 							    gint              id);
 
+POPPLER_PUBLIC
+void               poppler_document_reset_form             (PopplerDocument  *document,
+                                                            GList            *fields,
+                                                            gboolean          exclude_fields);
+
 /* Interface for getting the Index of a poppler_document */
 #define POPPLER_TYPE_INDEX_ITER                 (poppler_index_iter_get_type ())
 POPPLER_PUBLIC
diff --git a/glib/reference/poppler-sections.txt b/glib/reference/poppler-sections.txt
index 65e4ad99..f04a2c62 100644
--- a/glib/reference/poppler-sections.txt
+++ b/glib/reference/poppler-sections.txt
@@ -190,6 +190,7 @@ poppler_document_new_from_data
 poppler_document_new_from_file
 poppler_document_new_from_gfile
 poppler_document_new_from_stream
+poppler_document_reset_form
 poppler_document_save
 poppler_document_save_a_copy
 poppler_document_set_author