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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 */

#include "e-composer-private.h"
#include "e-util/e-util-private.h"

static void
composer_setup_charset_menu (EMsgComposer *composer)
{
    GtkUIManager *ui_manager;
    const gchar *path;
    GList *list;
    guint merge_id;

    ui_manager = gtkhtml_editor_get_ui_manager (GTKHTML_EDITOR (composer));
    path = "/main-menu/edit-menu/pre-spell-check/charset-menu";
    merge_id = gtk_ui_manager_new_merge_id (ui_manager);

    list = gtk_action_group_list_actions (composer->priv->charset_actions);
    list = g_list_sort (list, (GCompareFunc) e_action_compare_by_label);

    while (list != NULL) {
        GtkAction *action = list->data;

        gtk_ui_manager_add_ui (
            ui_manager, merge_id, path,
            gtk_action_get_name (action),
            gtk_action_get_name (action),
            GTK_UI_MANAGER_AUTO, FALSE);

        list = g_list_delete_link (list, list);
    }

    gtk_ui_manager_ensure_update (ui_manager);
}

static void
composer_setup_recent_menu (EMsgComposer *composer)
{
    EAttachmentView *view;
    GtkUIManager *ui_manager;
    GtkAction *action;
    const gchar *action_name;
    const gchar *path;
    guint merge_id;

    view = e_msg_composer_get_attachment_view (composer);
    ui_manager = gtkhtml_editor_get_ui_manager (GTKHTML_EDITOR (composer));
    path = "/main-menu/insert-menu/insert-menu-top/recent-placeholder";
    merge_id = gtk_ui_manager_new_merge_id (ui_manager);
    action_name = "recent-menu";

    action = e_attachment_view_recent_action_new (
        view, action_name, _("Recent _Documents"));

    if (action != NULL) {
        gtk_action_group_add_action (
            composer->priv->composer_actions, action);

        gtk_ui_manager_add_ui (
            ui_manager, merge_id, path,
            action_name, action_name,
            GTK_UI_MANAGER_AUTO, FALSE);
    }

    gtk_ui_manager_ensure_update (ui_manager);
}

void
e_composer_private_init (EMsgComposer *composer)
{
    EMsgComposerPrivate *priv = composer->priv;

    GtkhtmlEditor *editor;
    GtkUIManager *ui_manager;
    GtkWidget *container;
    GtkWidget *widget;
    GtkWidget *send_widget;
    GtkWindow *window;
    const gchar *path;
    gchar *filename;
    gint ii;
    GError *error = NULL;

    editor = GTKHTML_EDITOR (composer);
    ui_manager = gtkhtml_editor_get_ui_manager (editor);

    if (composer->lite) {
        widget = gtkhtml_editor_get_managed_widget (editor, "/main-menu");
        gtk_widget_hide (widget);
        widget = gtkhtml_editor_get_managed_widget (editor, "/main-toolbar");
        gtk_toolbar_set_style (GTK_TOOLBAR (widget), GTK_TOOLBAR_BOTH_HORIZ);
        gtk_widget_hide (widget);

    }

    /* Each composer window gets its own window group. */
    window = GTK_WINDOW (composer);
    priv->window_group = gtk_window_group_new ();
    gtk_window_group_add_window (priv->window_group, window);

    priv->charset_actions = gtk_action_group_new ("charset");
    priv->composer_actions = gtk_action_group_new ("composer");

    priv->extra_hdr_names = g_ptr_array_new ();
    priv->extra_hdr_values = g_ptr_array_new ();

    priv->gconf_bridge_binding_ids = g_array_new (
        FALSE, FALSE, sizeof (guint));

    priv->inline_images = g_hash_table_new_full (
        g_str_hash, g_str_equal,
        (GDestroyNotify) g_free,
        (GDestroyNotify) NULL);

    priv->inline_images_by_url = g_hash_table_new_full (
        g_str_hash, g_str_equal,
        (GDestroyNotify) g_free,
        (GDestroyNotify) camel_object_unref);

    priv->charset = e_composer_get_default_charset ();

    priv->is_from_message = FALSE;

    e_composer_actions_init (composer);

    filename = e_composer_find_data_file ("evolution-composer.ui");
    gtk_ui_manager_add_ui_from_file (ui_manager, filename, &error);
    g_free (filename);

    /* We set the send button as important to have a label */
    path = "/main-toolbar/pre-main-toolbar/send";
    send_widget = gtk_ui_manager_get_widget (ui_manager, path);
    gtk_tool_item_set_is_important (GTK_TOOL_ITEM (send_widget), TRUE);

    composer_setup_charset_menu (composer);

    if (error != NULL) {
        /* Henceforth, bad things start happening. */
        g_critical ("%s", error->message);
        g_clear_error (&error);
    }

    /* Construct the header table. */

    container = editor->vbox;

    widget = e_composer_header_table_new ();
    gtk_container_set_border_width (GTK_CONTAINER (widget), 6);
    gtk_box_pack_start (GTK_BOX (editor->vbox), widget, FALSE, FALSE, 0);
    if (composer->lite)
        gtk_box_reorder_child (GTK_BOX (editor->vbox), widget, 0);
    else
        gtk_box_reorder_child (GTK_BOX (editor->vbox), widget, 2);

    priv->header_table = g_object_ref (widget);
    gtk_widget_show (widget);

    /* Construct the attachment paned. */

    if (composer->lite) {
        e_attachment_paned_set_default_height (75); /* short attachment bar for Anjal */
        e_attachment_icon_view_set_default_icon_size (GTK_ICON_SIZE_BUTTON);
    }
    widget = e_attachment_paned_new ();
    gtk_box_pack_start (GTK_BOX (container), widget, TRUE, TRUE, 0);
    priv->attachment_paned = g_object_ref (widget);
    gtk_widget_show (widget);

    if (composer->lite) {
        GtkWidget *tmp, *tmp1, *tmp_box, *container;
        GtkWidget *combo;

        combo = e_attachment_paned_get_view_combo (
            E_ATTACHMENT_PANED (widget));
        gtk_widget_hide (combo);
        container = e_attachment_paned_get_controls_container (
            E_ATTACHMENT_PANED (widget));

        tmp_box = gtk_hbox_new (FALSE, 0);

        tmp = gtk_hbox_new (FALSE, 0);
        tmp1 = gtk_image_new_from_icon_name (
            "mail-send", GTK_ICON_SIZE_BUTTON);
        gtk_box_pack_start ((GtkBox *)tmp, tmp1, FALSE, FALSE, 0);
        tmp1 = gtk_label_new_with_mnemonic (_("S_end"));
        gtk_box_pack_start ((GtkBox *)tmp, tmp1, FALSE, FALSE, 6);
        gtk_widget_show_all(tmp);
        gtk_widget_reparent (send_widget, tmp_box);
        gtk_box_set_child_packing ((GtkBox *)tmp_box, send_widget, FALSE, FALSE, 6, GTK_PACK_END);
        gtk_tool_item_set_is_important (GTK_TOOL_ITEM (send_widget), TRUE);
        send_widget = gtk_bin_get_child ((GtkBin *)send_widget);
        gtk_container_remove((GtkContainer *)send_widget, gtk_bin_get_child ((GtkBin *)send_widget));
        gtk_container_add((GtkContainer *)send_widget, tmp);
        gtk_button_set_relief ((GtkButton *)send_widget, GTK_RELIEF_NORMAL);
        path = "/main-toolbar/pre-main-toolbar/save-draft";
        send_widget = gtk_ui_manager_get_widget (ui_manager, path);
        tmp = gtk_hbox_new (FALSE, 0);
        tmp1 = gtk_image_new_from_stock (
            GTK_STOCK_SAVE, GTK_ICON_SIZE_BUTTON);
        gtk_box_pack_start ((GtkBox *)tmp, tmp1, FALSE, FALSE, 0);
        tmp1 = gtk_label_new_with_mnemonic (_("Save draft"));
        gtk_box_pack_start ((GtkBox *)tmp, tmp1, FALSE, FALSE, 3);
        gtk_widget_show_all(tmp);
        gtk_widget_reparent (send_widget, tmp_box);
        gtk_box_set_child_packing ((GtkBox *)tmp_box, send_widget, FALSE, FALSE, 6, GTK_PACK_END);
        gtk_tool_item_set_is_important (GTK_TOOL_ITEM (send_widget), TRUE);
        send_widget = gtk_bin_get_child ((GtkBin *)send_widget);
        gtk_container_remove((GtkContainer *)send_widget, gtk_bin_get_child ((GtkBin *)send_widget));
        gtk_container_add((GtkContainer *)send_widget, tmp);
        gtk_button_set_relief ((GtkButton *)send_widget, GTK_RELIEF_NORMAL);

        gtk_widget_show(tmp_box);
        gtk_box_pack_end (GTK_BOX (container), tmp_box, FALSE, FALSE, 3);
    }

    g_object_set_data ((GObject *)composer, "vbox", editor->vbox);

    /* Reparent the scrolled window containing the GtkHTML widget
     * into the content area of the top attachment pane. */

    widget = GTK_WIDGET (gtkhtml_editor_get_html (editor));
    widget = gtk_widget_get_parent (widget);
    container = e_attachment_paned_get_content_area (
        E_ATTACHMENT_PANED (priv->attachment_paned));
    gtk_widget_reparent (widget, container);
    gtk_box_set_child_packing (
        GTK_BOX (container), widget, TRUE, TRUE, 0, GTK_PACK_START);

    composer_setup_recent_menu (composer);

    /* Bind headers to their corresponding actions. */

    for (ii = 0; ii < E_COMPOSER_NUM_HEADERS; ii++) {
        EComposerHeaderTable *table;
        EComposerHeader *header;
        GtkAction *action;

        table = E_COMPOSER_HEADER_TABLE (priv->header_table);
        header = e_composer_header_table_get_header (table, ii);

        switch (ii) {
            case E_COMPOSER_HEADER_BCC:
                action = ACTION (VIEW_BCC);
                break;

            case E_COMPOSER_HEADER_CC:
                action = ACTION (VIEW_CC);
                break;

            case E_COMPOSER_HEADER_FROM:
                action = ACTION (VIEW_FROM);
                break;

            case E_COMPOSER_HEADER_REPLY_TO:
                action = ACTION (VIEW_REPLY_TO);
                break;

            default:
                continue;
        }

        e_mutual_binding_new (
            header, "sensitive",
            action, "sensitive");

        e_mutual_binding_new (
            header, "visible",
            action, "active");
    }

    priv->mail_sent = FALSE;
}

void
e_composer_private_dispose (EMsgComposer *composer)
{
    GConfBridge *bridge;
    GArray *array;
    guint binding_id;

    bridge = gconf_bridge_get ();
    array = composer->priv->gconf_bridge_binding_ids;

    while (array->len > 0) {
        binding_id = g_array_index (array, guint, 0);
        gconf_bridge_unbind (bridge, binding_id);
        g_array_remove_index_fast (array, 0);
    }

    if (composer->priv->header_table != NULL) {
        g_object_unref (composer->priv->header_table);
        composer->priv->header_table = NULL;
    }

    if (composer->priv->attachment_paned != NULL) {
        g_object_unref (composer->priv->attachment_paned);
        composer->priv->attachment_paned = NULL;
    }

    if (composer->priv->window_group != NULL) {
        g_object_unref (composer->priv->window_group);
        composer->priv->window_group = NULL;
    }

    if (composer->priv->charset_actions != NULL) {
        g_object_unref (composer->priv->charset_actions);
        composer->priv->charset_actions = NULL;
    }

    if (composer->priv->composer_actions != NULL) {
        g_object_unref (composer->priv->composer_actions);
        composer->priv->composer_actions = NULL;
    }

    g_hash_table_remove_all (composer->priv->inline_images);
    g_hash_table_remove_all (composer->priv->inline_images_by_url);

    if (composer->priv->redirect != NULL) {
        camel_object_unref (composer->priv->redirect);
        composer->priv->redirect = NULL;
    }
}

void
e_composer_private_finalize (EMsgComposer *composer)
{
    GPtrArray *array;

    array = composer->priv->extra_hdr_names;
    g_ptr_array_foreach (array, (GFunc) g_free, NULL);
    g_ptr_array_free (array, TRUE);

    array = composer->priv->extra_hdr_values;
    g_ptr_array_foreach (array, (GFunc) g_free, NULL);
    g_ptr_array_free (array, TRUE);

    g_free (composer->priv->charset);
    g_free (composer->priv->mime_type);
    g_free (composer->priv->mime_body);

    g_hash_table_destroy (composer->priv->inline_images);
    g_hash_table_destroy (composer->priv->inline_images_by_url);
}

gchar *
e_composer_find_data_file (const gchar *basename)
{
    gchar *filename;

    g_return_val_if_fail (basename != NULL, NULL);

    /* Support running directly from the source tree. */
    filename = g_build_filename (".", basename, NULL);
    if (g_file_test (filename, G_FILE_TEST_EXISTS))
        return filename;
    g_free (filename);

    /* XXX This is kinda broken. */
    filename = g_build_filename (EVOLUTION_UIDIR, basename, NULL);
    if (g_file_test (filename, G_FILE_TEST_EXISTS))
        return filename;
    g_free (filename);

    g_critical ("Could not locate '%s'", basename);

    return NULL;
}

gchar *
e_composer_get_default_charset (void)
{
    GConfClient *client;
    gchar *charset;
    GError *error = NULL;

    client = gconf_client_get_default ();

    charset = gconf_client_get_string (
        client, COMPOSER_GCONF_CHARSET_KEY, &error);
    if (error != NULL) {
        g_warning ("%s", error->message);
        g_clear_error (&error);
    }

    /* See what charset the mailer is using.
     * XXX We should not have to know where this lives in GConf.
     *     Need a mail_config_get_default_charset() that does this. */
    if (!charset || charset[0] == '\0') {
        g_free (charset);
        charset = gconf_client_get_string (
            client, MAIL_GCONF_CHARSET_KEY, NULL);
        if (charset != NULL && *charset == '\0') {
            g_free (charset);
            charset = NULL;
        } else if (error != NULL) {
            g_warning ("%s", error->message);
            g_clear_error (&error);
        }
    }

    g_object_unref (client);

    if (charset == NULL)
        charset = g_strdup (camel_iconv_locale_charset ());

    if (charset == NULL)
        charset = g_strdup ("us-ascii");

    return charset;
}

gboolean
e_composer_paste_image (EMsgComposer *composer,
                        GtkClipboard *clipboard)
{
    GtkhtmlEditor *editor;
    EAttachmentStore *store;
    EAttachmentView *view;
    GdkPixbuf *pixbuf = NULL;
    gchar *filename = NULL;
    gchar *uri = NULL;
    gboolean success = FALSE;
    GError *error = NULL;

    g_return_val_if_fail (E_IS_MSG_COMPOSER (composer), FALSE);
    g_return_val_if_fail (GTK_IS_CLIPBOARD (clipboard), FALSE);

    editor = GTKHTML_EDITOR (composer);
    view = e_msg_composer_get_attachment_view (composer);
    store = e_attachment_view_get_store (view);

    /* Extract the image data from the clipboard. */
    pixbuf = gtk_clipboard_wait_for_image (clipboard);
    g_return_val_if_fail (pixbuf != NULL, FALSE);

    /* Reserve a temporary file. */
    filename = e_mktemp (NULL);
    if (filename == NULL) {
        g_set_error (
            &error, G_FILE_ERROR,
            g_file_error_from_errno (errno),
            "Could not create temporary file: %s",
            g_strerror (errno));
        goto exit;
    }

    /* Save the pixbuf as a temporary file in image/png format. */
    if (!gdk_pixbuf_save (pixbuf, filename, "png", &error, NULL))
        goto exit;

    /* Convert the filename to a URI. */
    uri = g_filename_to_uri (filename, NULL, &error);
    if (uri == NULL)
        goto exit;

    /* In HTML mode, paste the image into the message body.
     * In text mode, add the image to the attachment store. */
    if (gtkhtml_editor_get_html_mode (editor))
        gtkhtml_editor_insert_image (editor, uri);
    else {
        EAttachment *attachment;

        attachment = e_attachment_new_for_uri (uri);
        e_attachment_store_add_attachment (store, attachment);
        e_attachment_load_async (
            attachment, (GAsyncReadyCallback)
            e_attachment_load_handle_error, composer);
        g_object_unref (attachment);
    }

    success = TRUE;

exit:
    if (error != NULL) {
        g_warning ("%s", error->message);
        g_error_free (error);
    }

    g_object_unref (pixbuf);
    g_free (filename);
    g_free (uri);

    return success;
}

gboolean
e_composer_paste_uris (EMsgComposer *composer,
                       GtkClipboard *clipboard)
{
    EAttachmentStore *store;
    EAttachmentView *view;
    gchar **uris;
    gint ii;

    g_return_val_if_fail (E_IS_MSG_COMPOSER (composer), FALSE);
    g_return_val_if_fail (GTK_IS_CLIPBOARD (clipboard), FALSE);

    view = e_msg_composer_get_attachment_view (composer);
    store = e_attachment_view_get_store (view);

    /* Extract the URI data from the clipboard. */
    uris = gtk_clipboard_wait_for_uris (clipboard);
    g_return_val_if_fail (uris != NULL, FALSE);

    /* Add the URIs to the attachment store. */
    for (ii = 0; uris[ii] != NULL; ii++) {
        EAttachment *attachment;

        attachment = e_attachment_new_for_uri (uris[ii]);
        e_attachment_store_add_attachment (store, attachment);
        e_attachment_load_async (
            attachment, (GAsyncReadyCallback)
            e_attachment_load_handle_error, composer);
        g_object_unref (attachment);
    }

    return TRUE;
}