9e4fcb29cf
2007-11-14 Matthew Barnes <mbarnes@redhat.com> ** Remove trailing whitespace from source code. svn path=/trunk/; revision=34537
354 lines
10 KiB
C
354 lines
10 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
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/*
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* e-reflow-model.c
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* Copyright 2000, 2001, Ximian, Inc.
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*
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* Authors:
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* Chris Lahey <clahey@ximian.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License, version 2, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <config.h>
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#include "e-util/e-util-marshal.h"
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#include "e-util/e-util.h"
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#include "e-reflow-model.h"
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G_DEFINE_TYPE (EReflowModel, e_reflow_model, G_TYPE_OBJECT)
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#define d(x)
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d(static gint depth = 0;)
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enum {
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MODEL_CHANGED,
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COMPARISON_CHANGED,
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MODEL_ITEMS_INSERTED,
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MODEL_ITEM_CHANGED,
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MODEL_ITEM_REMOVED,
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LAST_SIGNAL
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};
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static guint e_reflow_model_signals [LAST_SIGNAL] = { 0, };
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/**
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* e_reflow_model_set_width:
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* @e_reflow_model: The e-reflow-model to operate on
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* @width: The new value for the width of each item.
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*/
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void
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e_reflow_model_set_width (EReflowModel *e_reflow_model, int width)
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{
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g_return_if_fail (e_reflow_model != NULL);
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g_return_if_fail (E_IS_REFLOW_MODEL (e_reflow_model));
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E_REFLOW_MODEL_GET_CLASS (e_reflow_model)->set_width (e_reflow_model, width);
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}
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/**
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* e_reflow_model_count:
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* @e_reflow_model: The e-reflow-model to operate on
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*
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* Returns: the number of items in the reflow model.
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*/
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int
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e_reflow_model_count (EReflowModel *e_reflow_model)
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{
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g_return_val_if_fail (e_reflow_model != NULL, 0);
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g_return_val_if_fail (E_IS_REFLOW_MODEL (e_reflow_model), 0);
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return E_REFLOW_MODEL_GET_CLASS (e_reflow_model)->count (e_reflow_model);
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}
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/**
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* e_reflow_model_height:
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* @e_reflow_model: The e-reflow-model to operate on
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* @n: The item number to get the height of.
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* @parent: The parent GnomeCanvasItem.
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*
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* Returns: the height of the nth item.
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*/
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int
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e_reflow_model_height (EReflowModel *e_reflow_model, int n, GnomeCanvasGroup *parent)
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{
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g_return_val_if_fail (e_reflow_model != NULL, 0);
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g_return_val_if_fail (E_IS_REFLOW_MODEL (e_reflow_model), 0);
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return E_REFLOW_MODEL_GET_CLASS (e_reflow_model)->height (e_reflow_model, n, parent);
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}
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/**
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* e_reflow_model_incarnate:
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* @e_reflow_model: The e-reflow-model to operate on
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* @n: The item to create.
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* @parent: The parent GnomeCanvasItem to create a child of.
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*
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* Create a GnomeCanvasItem to represent the nth piece of data.
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*
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* Returns: the new GnomeCanvasItem.
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*/
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GnomeCanvasItem *
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e_reflow_model_incarnate (EReflowModel *e_reflow_model, int n, GnomeCanvasGroup *parent)
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{
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g_return_val_if_fail (e_reflow_model != NULL, NULL);
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g_return_val_if_fail (E_IS_REFLOW_MODEL (e_reflow_model), NULL);
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return E_REFLOW_MODEL_GET_CLASS (e_reflow_model)->incarnate (e_reflow_model, n, parent);
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}
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/**
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* e_reflow_model_compare:
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* @e_reflow_model: The e-reflow-model to operate on
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* @n1: The first item to compare
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* @n2: The second item to compare
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*
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* Compares item n1 and item n2 to see which should come first.
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*
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* Returns: strcmp like semantics for the comparison value.
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*/
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int
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e_reflow_model_compare (EReflowModel *e_reflow_model, int n1, int n2)
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{
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#if 0
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g_return_val_if_fail (e_reflow_model != NULL, 0);
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g_return_val_if_fail (E_IS_REFLOW_MODEL (e_reflow_model), 0);
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#endif
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return E_REFLOW_MODEL_GET_CLASS (e_reflow_model)->compare (e_reflow_model, n1, n2);
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}
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/**
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* e_reflow_model_reincarnate:
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* @e_reflow_model: The e-reflow-model to operate on
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* @n: The item to create.
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* @item: The item to reuse.
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*
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* Update item to represent the nth piece of data.
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*/
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void
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e_reflow_model_reincarnate (EReflowModel *e_reflow_model, int n, GnomeCanvasItem *item)
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{
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g_return_if_fail (e_reflow_model != NULL);
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g_return_if_fail (E_IS_REFLOW_MODEL (e_reflow_model));
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E_REFLOW_MODEL_GET_CLASS (e_reflow_model)->reincarnate (e_reflow_model, n, item);
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}
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static void
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e_reflow_model_class_init (EReflowModelClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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e_reflow_model_signals [MODEL_CHANGED] =
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g_signal_new ("model_changed",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (EReflowModelClass, model_changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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e_reflow_model_signals [COMPARISON_CHANGED] =
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g_signal_new ("comparison_changed",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (EReflowModelClass, comparison_changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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e_reflow_model_signals [MODEL_ITEMS_INSERTED] =
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g_signal_new ("model_items_inserted",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (EReflowModelClass, model_items_inserted),
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NULL, NULL,
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e_util_marshal_NONE__INT_INT,
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G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT);
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e_reflow_model_signals [MODEL_ITEM_CHANGED] =
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g_signal_new ("model_item_changed",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (EReflowModelClass, model_item_changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__INT,
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G_TYPE_NONE, 1, G_TYPE_INT);
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e_reflow_model_signals [MODEL_ITEM_REMOVED] =
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g_signal_new ("model_item_removed",
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (EReflowModelClass, model_item_removed),
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NULL, NULL,
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g_cclosure_marshal_VOID__INT,
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G_TYPE_NONE, 1, G_TYPE_INT);
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klass->set_width = NULL;
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klass->count = NULL;
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klass->height = NULL;
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klass->incarnate = NULL;
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klass->reincarnate = NULL;
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klass->model_changed = NULL;
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klass->comparison_changed = NULL;
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klass->model_items_inserted = NULL;
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klass->model_item_removed = NULL;
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klass->model_item_changed = NULL;
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}
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static void
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e_reflow_model_init (EReflowModel *e_reflow_model)
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{
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}
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#if d(!)0
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static void
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print_tabs (void)
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{
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int i;
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for (i = 0; i < depth; i++)
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g_print("\t");
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}
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#endif
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/**
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* e_reflow_model_changed:
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* @e_reflow_model: the reflow model to notify of the change
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*
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* Use this function to notify any views of this reflow model that
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* the contents of the reflow model have changed. This will emit
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* the signal "model_changed" on the @e_reflow_model object.
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*
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* It is preferable to use the e_reflow_model_item_changed() signal to
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* notify of smaller changes than to invalidate the entire model, as
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* the views might have ways of caching the information they render
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* from the model.
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*/
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void
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e_reflow_model_changed (EReflowModel *e_reflow_model)
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{
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g_return_if_fail (e_reflow_model != NULL);
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g_return_if_fail (E_IS_REFLOW_MODEL (e_reflow_model));
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d(print_tabs());
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d(g_print("Emitting model_changed on model 0x%p.\n", e_reflow_model));
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d(depth++);
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g_signal_emit (e_reflow_model,
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e_reflow_model_signals [MODEL_CHANGED], 0);
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d(depth--);
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}
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/**
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* e_reflow_model_comparison_changed:
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* @e_reflow_model: the reflow model to notify of the change
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*
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* Use this function to notify any views of this reflow model that the
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* sorting has changed. The actual contents of the items hasn't, so
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* there's no need to re-query the model for the heights of the
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* individual items.
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*/
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void
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e_reflow_model_comparison_changed (EReflowModel *e_reflow_model)
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{
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g_return_if_fail (e_reflow_model != NULL);
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g_return_if_fail (E_IS_REFLOW_MODEL (e_reflow_model));
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d(print_tabs());
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d(g_print("Emitting comparison_changed on model 0x%p.\n", e_reflow_model));
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d(depth++);
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g_signal_emit (e_reflow_model,
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e_reflow_model_signals [COMPARISON_CHANGED], 0);
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d(depth--);
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}
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/**
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* e_reflow_model_items_inserted:
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* @e_reflow_model: The model changed.
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* @position: The position the items were insert in.
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* @count: The number of items inserted.
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*
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* Use this function to notify any views of the reflow model that a number of items have been inserted.
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**/
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void
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e_reflow_model_items_inserted (EReflowModel *e_reflow_model, int position, int count)
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{
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g_return_if_fail (e_reflow_model != NULL);
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g_return_if_fail (E_IS_REFLOW_MODEL (e_reflow_model));
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d(print_tabs());
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d(g_print("Emitting items_inserted on model 0x%p, position=%d, count=%d.\n", e_reflow_model, position, count));
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d(depth++);
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g_signal_emit (e_reflow_model,
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e_reflow_model_signals [MODEL_ITEMS_INSERTED], 0,
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position, count);
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d(depth--);
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}
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/**
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* e_reflow_model_item_removed:
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* @e_reflow_model: The model changed.
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* @n: The position from which the items were removed.
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*
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* Use this function to notify any views of the reflow model that an
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* item has been removed.
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**/
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void
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e_reflow_model_item_removed (EReflowModel *e_reflow_model,
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int n)
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{
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g_return_if_fail (e_reflow_model != NULL);
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g_return_if_fail (E_IS_REFLOW_MODEL (e_reflow_model));
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d(print_tabs());
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d(g_print("Emitting item_removed on model 0x%p, n=%d.\n", e_reflow_model, n));
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d(depth++);
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g_signal_emit (e_reflow_model,
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e_reflow_model_signals [MODEL_ITEM_REMOVED], 0,
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n);
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d(depth--);
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}
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/**
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* e_reflow_model_item_changed:
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* @e_reflow_model: the reflow model to notify of the change
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* @item: the item that was changed in the model.
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*
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* Use this function to notify any views of the reflow model that the
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* contents of item @item have changed in model such that the height
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* has changed or the item needs to be reincarnated. This function
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* will emit the "model_item_changed" signal on the @e_reflow_model
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* object
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*/
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void
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e_reflow_model_item_changed (EReflowModel *e_reflow_model, int n)
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{
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g_return_if_fail (e_reflow_model != NULL);
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g_return_if_fail (E_IS_REFLOW_MODEL (e_reflow_model));
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d(print_tabs());
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d(g_print("Emitting item_changed on model 0x%p, n=%d.\n", e_reflow_model, n));
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d(depth++);
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g_signal_emit (e_reflow_model,
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e_reflow_model_signals [MODEL_ITEM_CHANGED], 0,
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n);
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d(depth--);
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}
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