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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * folder-browser.c: Folder browser top level component
 *
 * Author:
 *   Miguel de Icaza (miguel@kernel.org)
 *
 * (C) 2000 Helix Code, Inc.
 */
#include <config.h>
#include <gnome.h>
#include "e-util/e-util.h"
#include "folder-browser.h"
#include "mail.h"
#include "message-list.h"
#include <widgets/e-paned/e-vpaned.h>


#define PARENT_TYPE (gtk_table_get_type ())

static GtkObjectClass *folder_browser_parent_class;


#define PROPERTY_FOLDER_URI          "folder_uri"
#define PROPERTY_MESSAGE_PREVIEW     "message_preview"

#define PROPERTY_FOLDER_URI_IDX      1
#define PROPERTY_MESSAGE_PREVIEW_IDX 2



static void
folder_browser_destroy (GtkObject *object)
{
    FolderBrowser *folder_browser = FOLDER_BROWSER (object);
    
    if (folder_browser->shell) {
        CORBA_Environment ev;

        CORBA_exception_init (&ev);
        Bonobo_Unknown_unref (folder_browser->shell, &ev);
        CORBA_exception_free (&ev);
    }
    
    if (folder_browser->uri)
        g_free (folder_browser->uri);

    if (folder_browser->folder)
        gtk_object_unref (GTK_OBJECT (folder_browser->folder));
    
    if (folder_browser->message_list)
        bonobo_object_unref (BONOBO_OBJECT (folder_browser->message_list));

    folder_browser_parent_class->destroy (object);
}

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

    folder_browser_parent_class = gtk_type_class (PARENT_TYPE);
}

static gboolean
folder_browser_load_folder (FolderBrowser *fb, const char *name)
{
    char *store_name, *msg;
    CamelStore *store;
    CamelFolder *new_folder = NULL;
    CamelException *ex;
    gboolean new_folder_exists = FALSE;

    ex = camel_exception_new ();

    if (!strncmp(name, "vfolder:", 8)) {
        char *query, *newquery;
        store_name = g_strdup(name);
        query = strchr(store_name, '?');
        if (query) {
            *query++ = 0;
        } else {
            query = "";
        }
        newquery = g_strdup_printf("mbox?%s", query);
        store = camel_session_get_store (session, store_name, ex);

        if (store) {
            new_folder = camel_store_get_folder (store, newquery, ex);
            /* FIXME: do this properly rather than hardcoding */
#warning "Find a way not to hardcode vfolder source"
            {
                CamelStore *st;
                char *stname;
                CamelFolder *source_folder;
                extern char *evolution_dir;
                
                stname = g_strdup_printf("mbox://%s/local/Inbox", evolution_dir);
                st = camel_session_get_store (session, stname, ex);
                g_free (stname);
                if (st) {
                    source_folder = camel_store_get_folder (st, "mbox", ex);
                    if (source_folder) {
                        camel_vee_folder_add_folder(new_folder, source_folder);
                    }
                }
            }
        }
        g_free(newquery);
        g_free(store_name);

    } else if (!strncmp(name, "file:", 5)) {
        /* Change "file:" to "mbox:". */
        store_name = g_strdup_printf ("mbox:%s", name + 5);
        store = camel_session_get_store (session, store_name, ex);
        g_free (store_name);
        if (store) {
            new_folder = camel_store_get_folder (store, "mbox", ex);
        }
    } else {
        char *msg;

        msg = g_strdup_printf ("Can't open URI %s", name);
        gnome_error_dialog (msg);
        g_free (msg);
        camel_exception_free (ex);
        return FALSE;
    }
    
    if (store)
        gtk_object_unref (GTK_OBJECT (store));

    if (camel_exception_get_id (ex)) {
        msg = g_strdup_printf ("Unable to get folder %s: %s\n", name,
                       camel_exception_get_description (ex));
        gnome_error_dialog (msg);
        camel_exception_free (ex);
        if (new_folder)
            gtk_object_unref((GtkObject *)new_folder);
        return FALSE;
    }
    
    /* If the folder does not exist, we don't want to show it */
    new_folder_exists = camel_folder_exists (new_folder, ex);
    if (camel_exception_get_id (ex)) {
        msg = g_strdup_printf ("Unable to test if folder %s "
                       "exists: %s\n", name,
                       camel_exception_get_description (ex));
        gnome_error_dialog (msg);
        camel_exception_free (ex);
        return FALSE;
    }
    camel_exception_free (ex);
        
    if (!new_folder_exists) {
        gtk_object_unref (GTK_OBJECT (new_folder));
        return FALSE;
    }
    
    if (fb->folder)
        gtk_object_unref (GTK_OBJECT (fb->folder));
    
    fb->folder = new_folder;
    
    message_list_set_folder (fb->message_list, new_folder);

    return TRUE;
}

#define EQUAL(a,b) (strcmp (a,b) == 0)

void
folder_browser_set_uri (FolderBrowser *folder_browser, const char *uri)
{
    if (folder_browser->uri)
        g_free (folder_browser->uri);

    folder_browser->uri = g_strdup (uri);
    folder_browser_load_folder (folder_browser, folder_browser->uri);
}

void
folder_browser_set_message_preview (FolderBrowser *folder_browser, gboolean show_message_preview)
{
    if (folder_browser->preview_shown == show_message_preview)
        return;

    g_warning ("FIXME: implement me");
}

static void
get_prop (BonoboPropertyBag *bag,
      BonoboArg         *arg,
      guint              arg_id,
      gpointer           user_data)
{
    FolderBrowser *fb = user_data;

    switch (arg_id) {

    case PROPERTY_FOLDER_URI_IDX:
        if (fb && fb->uri)
            BONOBO_ARG_SET_STRING (arg, fb->uri);
        else
            BONOBO_ARG_SET_STRING (arg, "");
        break;

    case PROPERTY_MESSAGE_PREVIEW_IDX:
        g_warning ("Implement me; no return value");
        BONOBO_ARG_SET_BOOLEAN (arg, FALSE);
        break;

    default:
        g_warning ("Unhandled arg %d\n", arg_id);
    }
}

static void
set_prop (BonoboPropertyBag *bag,
      const BonoboArg   *arg,
      guint              arg_id,
      gpointer           user_data)
{
    FolderBrowser *fb = user_data;

    switch (arg_id) {

    case PROPERTY_FOLDER_URI_IDX:
        folder_browser_set_uri (fb, BONOBO_ARG_GET_STRING (arg));
        break;

    case PROPERTY_MESSAGE_PREVIEW_IDX:
        folder_browser_set_message_preview (fb, BONOBO_ARG_GET_BOOLEAN (arg));
        break;

    default:
        g_warning ("Unhandled arg %d\n", arg_id);
        break;
    }
}

static void
folder_browser_properties_init (FolderBrowser *fb)
{
    fb->properties = bonobo_property_bag_new (get_prop, set_prop, fb);

    bonobo_property_bag_add (
        fb->properties, PROPERTY_FOLDER_URI, PROPERTY_FOLDER_URI_IDX,
        BONOBO_ARG_STRING, NULL, _("The URI that the Folder Browser will display"), 0);
    bonobo_property_bag_add (
        fb->properties, PROPERTY_MESSAGE_PREVIEW, PROPERTY_MESSAGE_PREVIEW_IDX,
        BONOBO_ARG_BOOLEAN, NULL, _("Whether a message preview should be shown"), 0);
}

static char * search_options[] = {
    "Body or subject contains",
    "Body contains",
    "Subject contains",
    "Body does not contain",
    "Subject does not contain",
    NULL
};

/* %s is replaced by the whole search string in quotes ...
   possibly could split the search string into words as well ? */
static char * search_string[] = {
    "(or (body-contains %s) (match-all (header-contains \"Subject\" %s)))",
    "(body-contains %s)",
    "(match-all (header-contains \"Subject\" %s)",
    "(match-all (not (body-contains %s)))",
    "(match-all (not (header-contains \"Subject\" %s)))"
};

static void
search_set(FolderBrowser *fb)
{
    GtkWidget *widget;
    GString *out;
    char *str;
    int index;
    char *text;

    text = gtk_entry_get_text((GtkEntry *)fb->search_entry);

    if (text == NULL || text[0] == 0) {
        message_list_set_search (fb->message_list, NULL);
        return;
    }

    widget = gtk_menu_get_active (GTK_MENU(GTK_OPTION_MENU(fb->search_menu)->menu));
    index = (int)gtk_object_get_data((GtkObject *)widget, "search_option");
    if (index > sizeof(search_string)/sizeof(search_string[0]))
        index = 0;
    str = search_string[index];

    out = g_string_new("");
    while (*str) {
        if (str[0] == '%' && str[1]=='s') {
            str+=2;
            g_string_sprintfa(out, "\"%s\"", text);
        } else {
            g_string_append_c(out, *str);
            str++;
        }
    }
    message_list_set_search (fb->message_list, out->str);
    g_string_free(out, TRUE);
}

static void
search_menu_deactivate(GtkWidget *menu, FolderBrowser *fb)
{
    search_set(fb);
}

static GtkWidget *
create_option_menu (char **menu_list, int item, void *data)
{
    GtkWidget *omenu;
    GtkWidget *menu;
    int i = 0;
       
    omenu = gtk_option_menu_new ();
    menu = gtk_menu_new ();
    while (*menu_list){
        GtkWidget *entry;

        entry = gtk_menu_item_new_with_label (*menu_list);
        gtk_widget_show (entry);
        gtk_object_set_data((GtkObject *)entry, "search_option", (void *)i);
        gtk_menu_append (GTK_MENU (menu), entry);
        menu_list++;
        i++;
    }
    gtk_option_menu_set_menu (GTK_OPTION_MENU (omenu), menu);
    gtk_option_menu_set_history (GTK_OPTION_MENU (omenu), item);
    gtk_widget_show (omenu);

    gtk_signal_connect (GTK_OBJECT (menu), 
                "deactivate",
                GTK_SIGNAL_FUNC (search_menu_deactivate), data);

    return omenu;
}

static void
search_activate(GtkEntry *entry, FolderBrowser *fb)
{
    search_set(fb);
}

static void
folder_browser_gui_init (FolderBrowser *fb)
{
    GtkWidget *hbox, *label;

    /*
     * The panned container
     */
    fb->vpaned = e_vpaned_new ();
    gtk_widget_show (fb->vpaned);

    gtk_table_attach (
        GTK_TABLE (fb), fb->vpaned,
        0, 1, 1, 3,
        GTK_FILL | GTK_EXPAND,
        GTK_FILL | GTK_EXPAND,
        0, 0);

    /* quick-search entry */
    hbox = gtk_hbox_new(FALSE, 3);
    gtk_widget_show(hbox);
    fb->search_entry = gtk_entry_new();
    gtk_widget_show(fb->search_entry);
    gtk_signal_connect(GTK_OBJECT (fb->search_entry), "activate", search_activate, fb);
    /* gtk_signal_connect(fb->search_entry, "changed", search_activate, fb); */
    label = gtk_label_new("Search");
    gtk_widget_show(label);
    fb->search_menu = create_option_menu(search_options, 0, fb);
    gtk_box_pack_end((GtkBox *)hbox, fb->search_entry, FALSE, FALSE, 3);
    gtk_box_pack_end((GtkBox *)hbox, fb->search_menu, FALSE, FALSE, 3);
    gtk_box_pack_end((GtkBox *)hbox, label, FALSE, FALSE, 3);
    gtk_table_attach (
        GTK_TABLE (fb), hbox,
        0, 1, 0, 1,
        GTK_FILL | GTK_EXPAND,
        0,
        0, 0);

    fb->message_list_w = message_list_get_widget (fb->message_list);
    e_paned_add1 (E_PANED (fb->vpaned), fb->message_list_w);
    gtk_widget_show (fb->message_list_w);

    e_paned_add2 (E_PANED (fb->vpaned), GTK_WIDGET (fb->mail_display));
    e_paned_set_position (E_PANED (fb->vpaned), 200);

    gtk_widget_show (GTK_WIDGET (fb->mail_display));
    gtk_widget_show (GTK_WIDGET (fb));

}

static void
folder_browser_init (GtkObject *object)
{
}

static void
my_folder_browser_init (GtkObject *object)
{
    FolderBrowser *fb = FOLDER_BROWSER (object);

    /*
     * Setup parent class fields.
     */ 
    GTK_TABLE (fb)->homogeneous = FALSE;
    gtk_table_resize (GTK_TABLE (fb), 1, 2);

    /*
     * Our instance data
     */
    fb->message_list = MESSAGE_LIST (message_list_new (fb));
    fb->mail_display = MAIL_DISPLAY (mail_display_new (fb));

    folder_browser_properties_init (fb);
    folder_browser_gui_init (fb);
}

GtkWidget *
folder_browser_new (void)
{
    FolderBrowser *folder_browser = gtk_type_new (folder_browser_get_type ());

    my_folder_browser_init (GTK_OBJECT (folder_browser));
    folder_browser->uri = NULL;

    return GTK_WIDGET (folder_browser);
}


E_MAKE_TYPE (folder_browser, "FolderBrowser", FolderBrowser, folder_browser_class_init, folder_browser_init, PARENT_TYPE);