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/* GtkListPeer.c -- implements GtkListPeer's native methods

   Copyright (C) 1998, 1999, 2003, 2004 Free Software Foundation, Inc.

   This file is part of GNU Classpath.

   GNU Classpath 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.

   GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the

   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

   02110-1301 USA.

   Linking this library statically or dynamically with other modules is

   making a combined work based on this library.  Thus, the terms and

   conditions of the GNU General Public License cover the whole

   combination.

   As a special exception, the copyright holders of this library give you

   permission to link this library with independent modules to produce an

   executable, regardless of the license terms of these independent

   modules, and to copy and distribute the resulting executable under

   terms of your choice, provided that you also meet, for each linked

   independent module, the terms and conditions of the license of that

   module.  An independent module is a module which is not derived from

   or based on this library.  If you modify this library, you may extend

   this exception to your version of the library, but you are not

   obligated to do so.  If you do not wish to do so, delete this

   exception statement from your version. */

#include "gtkpeer.h"

#include "gnu_java_awt_peer_gtk_GtkListPeer.h"

static jmethodID postListItemEventID;

static GtkWidget *list_get_widget (GtkWidget *widget);

void

cp_gtk_list_init_jni (void)

{

  jclass gtklistpeer;

  gtklistpeer = (*cp_gtk_gdk_env())->FindClass (cp_gtk_gdk_env(),

                                         "gnu/java/awt/peer/gtk/GtkListPeer");

  postListItemEventID = (*cp_gtk_gdk_env())->GetMethodID (cp_gtk_gdk_env(), gtklistpeer,

                                                   "postItemEvent",

                                                   "(II)V");

}

enum

  {

    COLUMN_STRING,

    N_COLUMNS

  };

static gboolean item_highlighted_cb (GtkTreeSelection *selection,

                                     GtkTreeModel *model,

                                     GtkTreePath *path,

                                     gboolean path_currently_selected,

                                     jobject peer);

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_create

  (JNIEnv *env, jobject obj, jint rows)

{

  GtkWidget *sw;

  GtkWidget *list;

  GtkWidget *eventbox;

  GtkCellRenderer *renderer;

  GtkTreeViewColumn *column;

  GtkListStore *list_store;

  GtkTreeIter iter;

  GtkRequisition req;

  gint i;

  gdk_threads_enter ();

  /* Create global reference and save it for future use */

  gtkpeer_set_global_ref (env, obj);

  list_store = gtk_list_store_new (N_COLUMNS, G_TYPE_STRING);

  /* Add the number of rows so that we can calculate the tree view's

     size request. */

  for (i = 0; i < rows; i++)

    {

      gtk_list_store_append (list_store, &iter);

      gtk_list_store_set (list_store, &iter,

                          COLUMN_STRING, "",

                          -1);

    }

  list = gtk_tree_view_new_with_model (GTK_TREE_MODEL (list_store));

  renderer = gtk_cell_renderer_text_new ();

  column = gtk_tree_view_column_new_with_attributes (NULL,

                                     renderer,

                                     "text",

                                     COLUMN_STRING,

                                     NULL);

  eventbox = gtk_event_box_new ();

  sw = gtk_scrolled_window_new (NULL, NULL);

  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),

                                  GTK_POLICY_AUTOMATIC,

                                  GTK_POLICY_AUTOMATIC);

  gtk_container_add (GTK_CONTAINER (eventbox), sw);

  gtk_tree_view_append_column (GTK_TREE_VIEW (list), column);

  gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (list), FALSE);

  gtk_widget_size_request (GTK_WIDGET (list), &req);

  gtk_widget_set_size_request (GTK_WIDGET (list), req.width, req.height);

  gtk_container_add (GTK_CONTAINER (sw), list);

  /* Remove the blank rows. */

  gtk_list_store_clear (list_store);

  gtk_widget_show (list);

  gtk_widget_show (sw);

  gtkpeer_set_widget (env, obj, eventbox);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_connectSignals

  (JNIEnv *env, jobject obj)

{

  void *ptr;

  jobject gref;

  GtkWidget *list;

  GtkTreeSelection *selection;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  gref = gtkpeer_get_global_ref (env, obj);

  list = list_get_widget (GTK_WIDGET (ptr));

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (list));

  gtk_tree_selection_set_select_function (selection, item_highlighted_cb,

                                          gref, NULL);

  cp_gtk_component_connect_signals (G_OBJECT (list), gref);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_gtkWidgetModifyFont

  (JNIEnv *env, jobject obj, jstring name, jint style, jint size)

{

  const char *font_name;

  void *ptr;

  GtkWidget *list;

  PangoFontDescription *font_desc;

  gdk_threads_enter();

  ptr = gtkpeer_get_widget (env, obj);

  list = list_get_widget (GTK_WIDGET (ptr));

  font_name = (*env)->GetStringUTFChars (env, name, NULL);

  font_desc = pango_font_description_from_string (font_name);

  pango_font_description_set_size (font_desc,

                                   size * cp_gtk_dpi_conversion_factor);

  if (style & AWT_STYLE_BOLD)

    pango_font_description_set_weight (font_desc, PANGO_WEIGHT_BOLD);

  if (style & AWT_STYLE_ITALIC)

    pango_font_description_set_style (font_desc, PANGO_STYLE_OBLIQUE);

  gtk_widget_modify_font (GTK_WIDGET (list), font_desc);

  pango_font_description_free (font_desc);

  (*env)->ReleaseStringUTFChars (env, name, font_name);

  gdk_threads_leave();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_gtkWidgetRequestFocus

  (JNIEnv *env, jobject obj)

{

  void *ptr;

  GtkWidget *list;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  list = list_get_widget (GTK_WIDGET (ptr));

  gtk_widget_grab_focus (list);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_append

  (JNIEnv *env, jobject obj, jobjectArray items)

{

  void *ptr;

  GtkWidget *list;

  GtkTreeIter iter;

  GtkTreeModel *list_store;

  jint count;

  jint i;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  count = (*env)->GetArrayLength (env, items);

  list = list_get_widget (GTK_WIDGET (ptr));

  list_store = gtk_tree_view_get_model (GTK_TREE_VIEW (list));

  for (i = 0; i < count; i++)

    {

      const char *text;

      jobject item;

      item = (*env)->GetObjectArrayElement (env, items, i);

      text = (*env)->GetStringUTFChars (env, item, NULL);

      gtk_list_store_append (GTK_LIST_STORE (list_store), &iter);

      gtk_list_store_set (GTK_LIST_STORE (list_store), &iter,

                          COLUMN_STRING, text,

                          -1);

      (*env)->ReleaseStringUTFChars (env, item, text);

      (*env)->DeleteLocalRef(env, item);

    }

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_add

  (JNIEnv *env, jobject obj, jstring text, jint index)

{

  void *ptr;

  const char *str;

  GtkWidget *list;

  GtkTreeIter iter;

  GtkTreeModel *list_store;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  str = (*env)->GetStringUTFChars (env, text, NULL);

  list = list_get_widget (GTK_WIDGET (ptr));

  list_store = gtk_tree_view_get_model (GTK_TREE_VIEW (list));

  if (index == -1)

    gtk_list_store_append (GTK_LIST_STORE (list_store), &iter);

  else

    gtk_list_store_insert (GTK_LIST_STORE (list_store), &iter, index);

  gtk_list_store_set (GTK_LIST_STORE (list_store), &iter,

                      COLUMN_STRING, str, -1);

  (*env)->ReleaseStringUTFChars (env, text, str);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_delItems

  (JNIEnv *env, jobject obj, jint start, jint end)

{

  void *ptr;

  GtkWidget *list;

  GtkTreeIter iter;

  GtkTreeModel *list_store;

  jint i;

  jint num_items;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  list = list_get_widget (GTK_WIDGET (ptr));

  list_store = gtk_tree_view_get_model (GTK_TREE_VIEW (list));

  /* Special case: remove all rows. */

  if (end == -1)

    gtk_list_store_clear (GTK_LIST_STORE (list_store));

  else

    {

      i = 0;

      num_items = end - start + 1;

      gtk_tree_model_iter_nth_child (list_store, &iter, NULL, start);

      while (i < num_items)

        {

          gtk_list_store_remove (GTK_LIST_STORE (list_store), &iter);

          i++;

        }

    }

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_select

  (JNIEnv *env, jobject obj, jint index)

{

  void *ptr;

  GtkWidget *list;

  GtkTreePath *path;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  list = list_get_widget (GTK_WIDGET (ptr));

  path = gtk_tree_path_new_from_indices (index, -1);

  gtk_tree_view_set_cursor (GTK_TREE_VIEW (list), path, NULL, FALSE);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_deselect

  (JNIEnv *env, jobject obj, jint index)

{

  void *ptr;

  GtkWidget *list;

  GtkTreeSelection *selection;

  GtkTreePath *path;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  list = list_get_widget (GTK_WIDGET (ptr));

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (list));

  path = gtk_tree_path_new_from_indices (index, -1);

  gtk_tree_selection_unselect_path (selection, path);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_getSize

  (JNIEnv *env, jobject obj, jint rows, jint visible_rows, jintArray jdims)

{

  void *ptr;

  jint *dims;

  GtkRequisition current_req;

  GtkRequisition natural_req;

  GtkWidget* bin;

  gdk_threads_enter ();

  dims = (*env)->GetIntArrayElements (env, jdims, NULL);

  dims[0] = dims[1] = 0;

  ptr = gtkpeer_get_widget (env, obj);

  bin = list_get_widget (GTK_WIDGET (ptr));

  /* Save the widget's current size request. */

  gtk_widget_size_request (bin, &current_req);

  /* Get the widget's "natural" size request. */

  gtk_widget_set_size_request (GTK_WIDGET (ptr), -1, -1);

  gtk_widget_size_request (bin, &natural_req);

  /* Reset the widget's size request. */

  gtk_widget_set_size_request (bin,

                               current_req.width, current_req.height);

  dims[0] = natural_req.width;

  /* Calculate the final height, by comparing the number of rows

     in the list to the number of rows requested by the caller.

     FIXME: Is there a GTK method that counts the number of rows

     in the list? If so, we don't need to bring visible_rows from

     the Java peer. */

  if (rows == visible_rows)

    dims[1] = natural_req.height;

  else

    dims[1] = natural_req.height / visible_rows * rows;

  (*env)->ReleaseIntArrayElements (env, jdims, dims, 0);

  gdk_threads_leave ();

}

JNIEXPORT jintArray JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_getSelectedIndexes

  (JNIEnv *env, jobject obj)

{

  void *ptr;

  GtkWidget *list;

  GtkTreeSelection *selection;

  jintArray result_array;

  jint *result_array_iter;

  GList *current_row;

  GList *rows;

  gint *indices;

  jint count;

  jint i;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  list = list_get_widget (GTK_WIDGET (ptr));

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (list));

  count = gtk_tree_selection_count_selected_rows (selection);

  if (count > 0)

    {

      current_row = rows = gtk_tree_selection_get_selected_rows (selection, NULL);

      result_array = (*env)->NewIntArray (env, count);

      result_array_iter = (*env)->GetIntArrayElements (env, result_array, NULL);

      for (i = 0; i < count; i++)

        {

          indices = gtk_tree_path_get_indices (current_row->data);

          result_array_iter[i] = indices ? indices[0] : -1;

          current_row = g_list_next (current_row);

        }

      if (rows)

        {

          g_list_foreach (rows, (GFunc) gtk_tree_path_free, NULL);

          g_list_free (rows);

        }

      (*env)->ReleaseIntArrayElements (env, result_array, result_array_iter, 0);

    }

  else

    result_array = NULL;

  gdk_threads_leave ();

  return result_array;

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_makeVisible

  (JNIEnv *env, jobject obj, jint index)

{

  void *ptr;

  GtkWidget *list;

  GtkTreePath *path;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  list = list_get_widget (GTK_WIDGET (ptr));

  path = gtk_tree_path_new_from_indices (index, -1);

  gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (list), path,

                                NULL, FALSE, 0.0, 0.0);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkListPeer_setMultipleMode

  (JNIEnv *env, jobject obj, jboolean mode)

{

  void *ptr;

  GtkWidget *list;

  GtkTreeSelection *selection;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  list = list_get_widget (GTK_WIDGET (ptr));

  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (list));

  gtk_tree_selection_set_mode (selection,

                               mode ? GTK_SELECTION_MULTIPLE

                               : GTK_SELECTION_SINGLE);

  gdk_threads_leave ();

}

static gboolean

item_highlighted_cb (GtkTreeSelection *selection __attribute__((unused)),

                     GtkTreeModel *model,

                     GtkTreePath *path,

                     gboolean path_currently_selected,

                     jobject peer)

{

  GtkTreeIter iter;

  jint row;

  gint *indices;

  if (gtk_tree_model_get_iter (model, &iter, path))

    {

      indices = gtk_tree_path_get_indices (path);

      row = indices ? indices[0] : -1;

      if (!path_currently_selected)

        {

          (*cp_gtk_gdk_env())->CallVoidMethod (cp_gtk_gdk_env(), peer,

                                        postListItemEventID,

                                        row,

                                        (jint) AWT_ITEM_SELECTED);

        }

      else

        {

          (*cp_gtk_gdk_env())->CallVoidMethod (cp_gtk_gdk_env(), peer,

                                        postListItemEventID,

                                        row,

                                        (jint) AWT_ITEM_DESELECTED);

        }

    }

  return TRUE;

}

static GtkWidget *

list_get_widget (GtkWidget *widget)

{

   GtkWidget *wid;

   g_assert (GTK_IS_EVENT_BOX (widget));

   wid = gtk_bin_get_child (GTK_BIN (widget));

   g_assert (GTK_IS_SCROLLED_WINDOW (wid));

   wid = gtk_bin_get_child (GTK_BIN (wid));

   return wid;

}