path: root/my-evolution/e-summary.c

/*
 * e-summary.c: ESummary object.
 *
 * Copyright (C) 2001 Ximian, Inc.
 *
 * Authors: Iain Holmes  <iain@ximian.com>
 */

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

#include <glib.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.h>

#include <gtkhtml/gtkhtml.h>
#include <gtkhtml/gtkhtml-stream.h>
#include <gtkhtml/htmlengine.h>
#include <gtkhtml/htmlselection.h>

#include <libgnomevfs/gnome-vfs.h>

#include <gal/util/e-util.h>
#include <gal/widgets/e-gui-utils.h>

#include <bonobo/bonobo-listener.h>
#include <libgnome/gnome-paper.h>
#include <libgnome/gnome-url.h>

#include <libgnomeprint/gnome-print-master.h>
#include <libgnomeprint/gnome-print-master-preview.h>

#include "e-summary.h"
#include "my-evolution-html.h"
#include "Mail.h"

#include <Evolution.h>

#include <time.h>

#define PARENT_TYPE (gtk_vbox_get_type ())

extern char *evolution_dir;

static GtkObjectClass *e_summary_parent_class;

struct _ESummaryMailFolderInfo {
    char *name;

    int count;
    int unread;
};

typedef struct _DownloadInfo {
    GtkHTMLStream *stream;
    char *uri;
    char *buffer;

    gboolean error;
} DownloadInfo;

struct _ESummaryPrivate {
    GNOME_Evolution_Shell shell;
    GNOME_Evolution_ShellView shell_view_interface;

    GtkWidget *html_scroller;
    GtkWidget *html;

    GHashTable *protocol_hash;
};

typedef struct _ProtocolListener {
    ESummaryProtocolListener listener;
    void *closure;
} ProtocolListener;


static void
destroy (GtkObject *object)
{
    ESummary *summary;
    ESummaryPrivate *priv;

    summary = E_SUMMARY (object);
    priv = summary->priv;

    if (priv == NULL) {
        return;
    }

    g_free (priv);
    summary->priv = NULL;

    e_summary_parent_class->destroy (object);
}

void
e_summary_draw (ESummary *summary)
{
    GString *string;
    char *html;
    char date[256];
    time_t t;

    if (summary->mail == NULL || summary->calendar == NULL
        || summary->rdf == NULL || summary->weather == NULL) {
        return;
    }

    string = g_string_new (HTML_1);
    t = time (NULL);
    strftime (date, 255, "%A, %d %B %Y", localtime (&t));

    html = g_strdup_printf (HTML_2, date);
    g_string_append (string, html);
    g_free (html);
    g_string_append (string, HTML_3);

    /* Weather and RDF stuff here */
    html = e_summary_weather_get_html (summary);
    g_string_append (string, html);

    html = e_summary_rdf_get_html (summary);
    g_string_append (string, html);

    g_string_append (string, HTML_4);

    html = (char *) e_summary_mail_get_html (summary);

    g_string_append (string, html);

    html = (char *) e_summary_calendar_get_html (summary);
    g_string_append (string, html);

    g_string_append (string, HTML_5);
    gtk_html_load_from_string (GTK_HTML (summary->priv->html), string->str,
                   strlen (string->str));
    g_string_free (string, TRUE);
}

static char *
e_pixmap_file (const char *filename)
{
    char *ret;
    char *edir;

    if (g_file_exists (filename)) {
        ret = g_strdup (filename);

        return ret;
    }

    /* Try the evolution images dir */
    edir = g_concat_dir_and_file (EVOLUTION_DATADIR "/images/evolution",
                      filename);

    if (g_file_exists (edir)) {
        ret = g_strdup (edir);
        g_free (edir);

        return ret;
    }
    g_free (edir);

    /* Try the evolution button images dir */
    edir = g_concat_dir_and_file (EVOLUTION_DATADIR "/images/evolution/buttons",
                      filename);

    if (g_file_exists (edir)) {
        ret = g_strdup (edir);
        g_free (edir);
        
        return ret;
    }
    g_free (edir);

    /* Fall back to the gnome_pixmap_file */
    return gnome_pixmap_file (filename);
}

static void
close_callback (GnomeVFSAsyncHandle *handle,
        GnomeVFSResult result,
        gpointer data)
{
    DownloadInfo *info = data;

    if (info->error) {
        gtk_html_stream_close (info->stream, GTK_HTML_STREAM_ERROR);
    } else {
        gtk_html_stream_close (info->stream, GTK_HTML_STREAM_OK);
    }

    g_free (info->uri);
    g_free (info->buffer);
    g_free (info);
}

static void
read_callback (GnomeVFSAsyncHandle *handle,
           GnomeVFSResult result,
           gpointer buffer,
           GnomeVFSFileSize bytes_requested,
           GnomeVFSFileSize bytes_read,
           gpointer data)
{
    DownloadInfo *info = data;

    if (result != GNOME_VFS_OK && result != GNOME_VFS_ERROR_EOF) {
        info->error = TRUE;
        gnome_vfs_async_close (handle, close_callback, info);
    }

    if (bytes_read == 0) {
        info->error = FALSE;
        gnome_vfs_async_close (handle, close_callback, info);
    } else {
        gtk_html_stream_write (info->stream, buffer, bytes_read);
        gnome_vfs_async_read (handle, buffer, 4095, read_callback, info);
    }
}

static void
open_callback (GnomeVFSAsyncHandle *handle,
           GnomeVFSResult result,
           DownloadInfo *info)
{
    if (result != GNOME_VFS_OK) {
        gtk_html_stream_close (info->stream, GTK_HTML_STREAM_ERROR);
        g_free (info->uri);
        g_free (info);
        return;
    }

    info->buffer = g_new (char, 4096);
    gnome_vfs_async_read (handle, info->buffer, 4095, read_callback, info);
}

static void
e_summary_url_clicked (GtkHTML *html,
               const char *url,
               ESummary *summary)
{
    char *protocol, *protocol_end;
    ProtocolListener *protocol_listener;

    g_print ("URL: %s\n", url);

    protocol_end = strchr (url, ':');
    if (protocol_end == NULL) {
        /* No url, let gnome work it out */
        gnome_url_show (url);
        return;
    }

    protocol = g_strndup (url, protocol_end - url);
    g_print ("Protocol: %s.\n", protocol);

    protocol_listener = g_hash_table_lookup (summary->priv->protocol_hash,
                         protocol);
    g_free (protocol);

    if (protocol_listener == NULL) {
        /* Again, let gnome work it out */
        gnome_url_show (url);
        return;
    }

    protocol_listener->listener (summary, url, protocol_listener->closure);
}

static void
e_summary_url_requested (GtkHTML *html,
             const char *url,
             GtkHTMLStream *stream,
             ESummary *summary)
{
    char *filename;
    GnomeVFSAsyncHandle *handle;
    DownloadInfo *info;

    if (strncasecmp (url, "file:", 5) == 0) {
        url += 5;
        filename = e_pixmap_file (url);
    } else if (strchr (url, ':') >= strchr (url, '/')) {
        filename = e_pixmap_file (url);
    } else {
        filename = g_strdup (url);
    }

    if (filename == NULL) {
        gtk_html_stream_close (stream, GTK_HTML_STREAM_ERROR);
        return;
    }

    info = g_new (DownloadInfo, 1);
    info->stream = stream;
    info->uri = filename;
    info->error = FALSE;

    gnome_vfs_async_open (&handle, filename, GNOME_VFS_OPEN_READ,
                  (GnomeVFSAsyncOpenCallback) open_callback, info);
}

static void
e_summary_evolution_protocol_listener (ESummary *summary,
                       const char *uri,
                       void *closure)
{
    e_summary_change_current_view (summary, uri);
}

static void
e_summary_class_init (GtkObjectClass *object_class)
{
    object_class->destroy = destroy;

    e_summary_parent_class = gtk_type_class (PARENT_TYPE);
}

#define DEFAULT_HTML "<html><head><title>My Evolution</title></head><body bgcolor=\"#ffffff\">hello</body></html>" 

static void
e_summary_init (ESummary *summary)
{
    ESummaryPrivate *priv;
    GdkColor bgcolor = {0, 0xffff, 0xffff, 0xffff};
    summary->priv = g_new (ESummaryPrivate, 1);

    priv = summary->priv;

    priv->html_scroller = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->html_scroller),
                    GTK_POLICY_AUTOMATIC,
                    GTK_POLICY_AUTOMATIC);
    priv->html = gtk_html_new ();
    gtk_html_set_editable (GTK_HTML (priv->html), FALSE);
    gtk_html_set_default_content_type (GTK_HTML (priv->html),
                       "text/html; charset=utf-8");
    gtk_html_set_default_background_color (GTK_HTML (priv->html), &bgcolor);
    gtk_html_load_from_string (GTK_HTML (priv->html), DEFAULT_HTML,
                   strlen (DEFAULT_HTML));

    gtk_signal_connect (GTK_OBJECT (priv->html), "url-requested",
                GTK_SIGNAL_FUNC (e_summary_url_requested), summary);
    gtk_signal_connect (GTK_OBJECT (priv->html), "link-clicked",
                GTK_SIGNAL_FUNC (e_summary_url_clicked), summary);
#if 0
    gtk_signal_connect (GTK_OBJECT (priv->html), "on-url",
                GTK_SIGNAL_FUNC (e_summary_on_url), summary);
#endif

    gtk_container_add (GTK_CONTAINER (priv->html_scroller), priv->html);
    gtk_widget_show_all (priv->html_scroller);
    gtk_box_pack_start (GTK_BOX (summary), priv->html_scroller,
                TRUE, TRUE, 0);

    priv->protocol_hash = NULL;
}

E_MAKE_TYPE (e_summary, "ESummary", ESummary, e_summary_class_init,
         e_summary_init, PARENT_TYPE);

GtkWidget *
e_summary_new (const GNOME_Evolution_Shell shell)
{
    ESummary *summary;

    summary = gtk_type_new (e_summary_get_type ());
    summary->priv->shell = shell;

    e_summary_add_protocol_listener (summary, "evolution", e_summary_evolution_protocol_listener, summary);

    e_summary_mail_init (summary, shell);
    e_summary_calendar_init (summary);
    e_summary_rdf_init (summary);
    e_summary_weather_init (summary);

    e_summary_draw (summary);

    return GTK_WIDGET (summary);
}

static void
do_summary_print (ESummary *summary,
          gboolean preview)
{
    GnomePrintContext *print_context;
    GnomePrintMaster *print_master;
    GnomePrintDialog *gpd;
    GnomePrinter *printer = NULL;
    int copies = 1;
    int collate = FALSE;

    if (!preview) {
        gpd = GNOME_PRINT_DIALOG (gnome_print_dialog_new (_("Print My Evolution"), GNOME_PRINT_DIALOG_COPIES));
        gnome_dialog_set_default (GNOME_DIALOG (gpd), GNOME_PRINT_PRINT);

        switch (gnome_dialog_run (GNOME_DIALOG (gpd))) {
        case GNOME_PRINT_PRINT:
            break;

        case GNOME_PRINT_PREVIEW:
            preview = TRUE;
            break;

        case -1:
            return;

        default:
            gnome_dialog_close (GNOME_DIALOG (gpd));
            return;
        }

        gnome_print_dialog_get_copies (gpd, &copies, &collate);
        printer = gnome_print_dialog_get_printer (gpd);
        gnome_dialog_close (GNOME_DIALOG (gpd));
    }

    print_master = gnome_print_master_new ();
    
    if (printer) {
        gnome_print_master_set_printer (print_master, printer);
    }
    gnome_print_master_set_copies (print_master, copies, collate);
    print_context = gnome_print_master_get_context (print_master);
    gtk_html_print (GTK_HTML (summary->priv->html), print_context);
    gnome_print_master_close (print_master);

    if (preview) {
        gboolean landscape = FALSE;
        GnomePrintMasterPreview *preview;

        preview = gnome_print_master_preview_new_with_orientation (
            print_master, _("Print Preview"), landscape);
        gtk_widget_show (GTK_WIDGET (preview));
    } else {
        int result = gnome_print_master_print (print_master);

        if (result == -1) {
            e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
                  _("Printing of My Evolution failed"));
        }
    }

    gtk_object_unref (GTK_OBJECT (print_master));
}

void
e_summary_print (GtkWidget *widget,
         ESummary *summary)
{
    do_summary_print (summary, FALSE);
}

void
e_summary_add_protocol_listener (ESummary *summary,
                 const char *protocol,
                 ESummaryProtocolListener listener,
                 void *closure)
{
    ProtocolListener *old;

    g_return_if_fail (summary != NULL);
    g_return_if_fail (IS_E_SUMMARY (summary));
    g_return_if_fail (protocol != NULL);
    g_return_if_fail (listener != NULL);

    if (summary->priv->protocol_hash == NULL) {
        g_print ("Creating\n");
        summary->priv->protocol_hash = g_hash_table_new (g_str_hash,
                                 g_str_equal);
        old = NULL;
    } else {
        old = g_hash_table_lookup (summary->priv->protocol_hash, protocol);
    }

    if (old != NULL) {
        return;
    }

    old = g_new (ProtocolListener, 1);
    old->listener = listener;
    old->closure = closure;

    g_hash_table_insert (summary->priv->protocol_hash, g_strdup (protocol), old);
}

void
e_summary_change_current_view (ESummary *summary,
                   const char *uri)
{
    GNOME_Evolution_ShellView svi;
    CORBA_Environment ev;

    g_return_if_fail (summary != NULL);
    g_return_if_fail (IS_E_SUMMARY (summary));

    svi = summary->shell_view_interface;
    if (svi == NULL) {
        return;
    }

    CORBA_exception_init (&ev);
    GNOME_Evolution_ShellView_changeCurrentView (svi, uri, &ev);
    CORBA_exception_free (&ev);
}

void
e_summary_set_message (ESummary *summary,
               const char *message,
               gboolean busy)
{
    GNOME_Evolution_ShellView svi;
    CORBA_Environment ev;

    g_return_if_fail (summary != NULL);
    g_return_if_fail (IS_E_SUMMARY (summary));

    svi = summary->shell_view_interface;
    if (svi == NULL) {
        return;
    }

    CORBA_exception_init (&ev);
    GNOME_Evolution_ShellView_setMessage (svi, message ? message : "", busy, &ev);
    CORBA_exception_free (&ev);
}

void
e_summary_unset_message (ESummary *summary)
{
    GNOME_Evolution_ShellView svi;
    CORBA_Environment ev;

    g_return_if_fail (summary != NULL);
    g_return_if_fail (IS_E_SUMMARY (summary));

    svi = summary->shell_view_interface;
    if (svi == NULL) {
        return;
    }

    CORBA_exception_init (&ev);
    GNOME_Evolution_ShellView_unsetMessage (svi, &ev);
    CORBA_exception_free (&ev);
}