path: root/executive-summary/evolution-services/executive-summary-html-view.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* executive-summary-html-view.c - Bonobo implementation of 
 *                                 HtmlView.idl
 *
 * Authors: Iain Holmes <iain@helixcode.com>
 *
 * Copyright (C) 2000  Helix Code, 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 of the
 * License, 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <gtk/gtksignal.h>
#include <bonobo/bonobo-event-source.h>
#include <gal/util/e-util.h>

#include "Executive-Summary.h"
#include "executive-summary-html-view.h"

static void executive_summary_html_view_destroy (GtkObject *object);
static void executive_summary_html_view_init (ExecutiveSummaryHtmlView *component);
static void executive_summary_html_view_class_init (ExecutiveSummaryHtmlViewClass *klass);

#define PARENT_TYPE (bonobo_object_get_type ())

static BonoboObjectClass *parent_class;

enum {
    HANDLE_URI,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

struct _ExecutiveSummaryHtmlViewPrivate {
    BonoboEventSource *event_source;

    char *html;
};

/* CORBA interface */
static POA_GNOME_Evolution_Summary_HTMLView__vepv HTMLView_vepv;

static POA_GNOME_Evolution_Summary_HTMLView *
create_servant (void)
{
    POA_GNOME_Evolution_Summary_HTMLView *servant;
    CORBA_Environment ev;

    servant = (POA_GNOME_Evolution_Summary_HTMLView *)g_new0 (BonoboObjectServant, 1);
    servant->vepv = &HTMLView_vepv;

    CORBA_exception_init (&ev);
    POA_GNOME_Evolution_Summary_HTMLView__init ((PortableServer_Servant) servant, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        g_free (servant);
        CORBA_exception_free (&ev);
        return NULL;
    }

    CORBA_exception_free (&ev);

    return servant;
}

static CORBA_char *
impl_GNOME_Evolution_Summary_HTMLView_getHtml (PortableServer_Servant servant,
                           CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    ExecutiveSummaryHtmlView *view;
    ExecutiveSummaryHtmlViewPrivate *priv;

    bonobo_object = bonobo_object_from_servant (servant);
    view = EXECUTIVE_SUMMARY_HTML_VIEW (bonobo_object);
    priv = view->private;

    return CORBA_string_dup (priv->html? priv->html: "");
}

static void
impl_GNOME_Evolution_Summary_HTMLView_handleURI (PortableServer_Servant servant,
                         const CORBA_char *uri,
                         CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    
    bonobo_object = bonobo_object_from_servant (servant);

    gtk_signal_emit (GTK_OBJECT (bonobo_object), signals[HANDLE_URI], uri);
}

/* GtkObject methods */
static void
executive_summary_html_view_destroy (GtkObject *object)
{
    ExecutiveSummaryHtmlView *view;
    ExecutiveSummaryHtmlViewPrivate *priv;

    g_print ("BANG!");
    view = EXECUTIVE_SUMMARY_HTML_VIEW (object);
    priv = view->private;

    if (priv == NULL)
        return;

    g_free (priv->html);
    g_free (priv);

    view->private = NULL;

    GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

static void
corba_class_init (void)
{
    POA_GNOME_Evolution_Summary_HTMLView__vepv *vepv;
    POA_GNOME_Evolution_Summary_HTMLView__epv *epv;
    PortableServer_ServantBase__epv *base_epv;

    base_epv = g_new0 (PortableServer_ServantBase__epv, 1);
    base_epv->_private = NULL;
    base_epv->finalize = NULL;
    base_epv->default_POA = NULL;

    epv = g_new0 (POA_GNOME_Evolution_Summary_HTMLView__epv, 1);
    epv->getHtml = impl_GNOME_Evolution_Summary_HTMLView_getHtml;
    epv->handleURI = impl_GNOME_Evolution_Summary_HTMLView_handleURI;

    vepv = &HTMLView_vepv;
    vepv->_base_epv = base_epv;
    vepv->Bonobo_Unknown_epv = bonobo_object_get_epv ();
    vepv->GNOME_Evolution_Summary_HTMLView_epv = epv;
}

static void
executive_summary_html_view_class_init (ExecutiveSummaryHtmlViewClass *klass)
{
    GtkObjectClass *object_class;

    object_class = GTK_OBJECT_CLASS (klass);
    object_class->destroy = executive_summary_html_view_destroy;

    signals[HANDLE_URI] = gtk_signal_new ("handle_uri", GTK_RUN_FIRST,
                          object_class->type,
                          GTK_SIGNAL_OFFSET (ExecutiveSummaryHtmlViewClass, handle_uri),
                          gtk_marshal_NONE__POINTER,
                          GTK_TYPE_NONE, 1,
                          GTK_TYPE_POINTER);

    gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);

    parent_class = gtk_type_class (PARENT_TYPE);

    corba_class_init ();
}

static void
executive_summary_html_view_init (ExecutiveSummaryHtmlView *view)
{
    ExecutiveSummaryHtmlViewPrivate *priv;

    priv = g_new (ExecutiveSummaryHtmlViewPrivate, 1);
    priv->html = NULL;
    priv->event_source = NULL;

    view->private = priv;
}

E_MAKE_TYPE (executive_summary_html_view, "ExecutiveSummaryHtmlView",
         ExecutiveSummaryHtmlView, executive_summary_html_view_class_init,
         executive_summary_html_view_init, PARENT_TYPE);

static void
executive_summary_html_view_construct (ExecutiveSummaryHtmlView *view,
                       BonoboEventSource *event_source,
                       GNOME_Evolution_Summary_HTMLView corba_object)
{
    ExecutiveSummaryHtmlViewPrivate *priv;

    g_return_if_fail (view != NULL);
    g_return_if_fail (IS_EXECUTIVE_SUMMARY_HTML_VIEW (view));
    g_return_if_fail (corba_object != CORBA_OBJECT_NIL);

    priv = view->private;
    
    priv->event_source = event_source;
    bonobo_object_add_interface (BONOBO_OBJECT (view), 
                     BONOBO_OBJECT (priv->event_source));

    bonobo_object_construct (BONOBO_OBJECT (view), corba_object);
}

/*** Public API ***/
/**
 * executive_summary_html_view_new_full:
 * @event_source: A BonoboEventSource that will be aggregated onto the 
 * interface.
 *
 * Creates a new BonoboObject that implements 
 * the HTMLView.idl interface.
 *
 * Returns: A BonoboObject.
 */
BonoboObject *
executive_summary_html_view_new_full (BonoboEventSource *event_source)
{
    ExecutiveSummaryHtmlView *view;
    POA_GNOME_Evolution_Summary_HTMLView *servant;
    GNOME_Evolution_Summary_HTMLView corba_object;

    g_return_val_if_fail (event_source != NULL, NULL);
    g_return_val_if_fail (BONOBO_IS_EVENT_SOURCE (event_source), NULL);

    servant = create_servant ();
    if (servant == NULL)
        return NULL;

    view = gtk_type_new (executive_summary_html_view_get_type ());
    corba_object = bonobo_object_activate_servant (BONOBO_OBJECT (view),
                               servant);

    executive_summary_html_view_construct (view, event_source, corba_object);

    return BONOBO_OBJECT (view);
}

/**
 * executive_summary_html_view_new:
 *
 * Creates a new BonoboObject that implements 
 * the HTMLView.idl interface.
 * Creates a default Bonobo::EventSource interface that will be aggregated onto
 * the interface.
 *
 * Returns: A BonoboObject.
 */
BonoboObject *
executive_summary_html_view_new (void)
{
    BonoboEventSource *event_source;

    event_source = bonobo_event_source_new ();
    return executive_summary_html_view_new_full (event_source);
}

/**
 * executive_summary_html_view_set_html:
 * @view: The ExecutiveSummaryHtmlView to operate on,
 * @html: The HTML as a string.
 *
 * Sets the HTML string in @view to @html. @html is copied into @view,
 * so after this call you are free to do what you want with @html.
 */
void
executive_summary_html_view_set_html (ExecutiveSummaryHtmlView *view,
                      const char *html)
{
    ExecutiveSummaryHtmlViewPrivate *priv;
    CORBA_any any;
    CORBA_short s;

    g_return_if_fail (view != NULL);
    g_return_if_fail (IS_EXECUTIVE_SUMMARY_HTML_VIEW (view));

    priv = view->private;
    if (priv->html)
        g_free (priv->html);

    if (html != NULL)
        priv->html = g_strdup (html);
    else
        priv->html = NULL;

    /* Notify any listeners */
    s = 0;

    any._type = (CORBA_TypeCode) TC_short;
    any._value = &s;

    bonobo_event_source_notify_listeners (BONOBO_EVENT_SOURCE (priv->event_source),
                          EXECUTIVE_SUMMARY_HTML_VIEW_HTML_CHANGED, 
                          &any, NULL);
}

/**
 * executive_summary_html_view_get_html:
 * @view: The ExecutiveSummaryHtmlView to operate on.
 *
 * Retrieves the HTML stored in @view. This return value is not duplicated
 * before returning, so you should not free it. Instead, if you want to free
 * the HTML stored in @view, you should use 
 * executive_summary_html_view_set_html (view, NULL);.
 *
 * Returns: A pointer to the HTML stored in @view.
 */
const char *
executive_summary_html_view_get_html (ExecutiveSummaryHtmlView *view)
{
    ExecutiveSummaryHtmlViewPrivate *priv;

    g_return_val_if_fail (view != NULL, NULL);
    g_return_val_if_fail (IS_EXECUTIVE_SUMMARY_HTML_VIEW (view), NULL);

    priv = view->private;
    return priv->html;
}
    
/**
 * executive_summary_html_view_get_event_source:
 * @view: The ExecutiveSummaryHtmlView to operate on.
 *
 * Retrieves the BonoboEventSource that is used in this view.
 *
 * Returns: A BonoboEventSource pointer.
 */
BonoboEventSource *
executive_summary_html_view_get_event_source (ExecutiveSummaryHtmlView *view)
{
    g_return_val_if_fail (view != NULL, NULL);
    g_return_val_if_fail (IS_EXECUTIVE_SUMMARY_HTML_VIEW (view), NULL);

    return view->private->event_source;
}