path: root/mail/e-mail-reader-utils.c

/*
 * e-mail-reader-utils.c
 *
 * 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)
 *
 */

/* Miscellaneous utility functions used by EMailReader actions. */

#include "e-mail-reader-utils.h"

#include <glib/gi18n.h>
#include <gtkhtml/gtkhtml.h>
#include <camel/camel-mime-message.h>
#include <camel/camel-vee-folder.h>
#include <camel/camel-vee-store.h>

#include "e-util/e-error.h"
#include "filter/filter-rule.h"

#include "mail/e-mail-browser.h"
#include "mail/em-composer-utils.h"
#include "mail/em-format-html-print.h"
#include "mail/em-utils.h"
#include "mail/mail-autofilter.h"
#include "mail/mail-ops.h"
#include "mail/mail-tools.h"
#include "mail/mail-vfolder.h"

void
e_mail_reader_activate (EMailReader *reader,
                        const gchar *action_name)
{
    GtkActionGroup *action_group;
    GtkAction *action;

    g_return_if_fail (E_IS_MAIL_READER (reader));
    g_return_if_fail (action_name != NULL);

    action_group = e_mail_reader_get_action_group (reader);
    action = gtk_action_group_get_action (action_group, action_name);
    g_return_if_fail (action != NULL);

    gtk_action_activate (action);
}

gboolean
e_mail_reader_confirm_delete (EMailReader *reader)
{
    EShell *shell;
    EShellBackend *shell_backend;
    EShellSettings *shell_settings;
    MessageList *message_list;
    CamelFolder *folder;
    GtkWidget *check_button;
    GtkWidget *content_area;
    GtkWidget *dialog;
    GtkWindow *window;
    const gchar *label;
    gboolean prompt_delete_in_vfolder;
    gint response;

    /* Remind users what deleting from a search folder does. */

    g_return_val_if_fail (E_IS_MAIL_READER (reader), FALSE);

    message_list = e_mail_reader_get_message_list (reader);
    window = e_mail_reader_get_window (reader);

    shell_backend = e_mail_reader_get_shell_backend (reader);
    shell = e_shell_backend_get_shell (shell_backend);
    shell_settings = e_shell_get_shell_settings (shell);

    folder = message_list->folder;

    prompt_delete_in_vfolder = e_shell_settings_get_boolean (
        shell_settings, "mail-prompt-delete-in-vfolder");

    if (!CAMEL_IS_VEE_STORE (folder->parent_store))
        return TRUE;

    if (!prompt_delete_in_vfolder)
        return TRUE;

    dialog = e_error_new (
        window, "mail:ask-delete-vfolder-msg",
        folder->full_name, NULL);

    /* XXX e-error should provide a widget layout and API suitable
     *     for packing additional widgets to the right of the alert
     *     icon.  But for now, screw it. */

    label = _("Do not ask me again");
    content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
    check_button = gtk_check_button_new_with_label (label);
    gtk_box_pack_start (
        GTK_BOX (content_area), check_button, TRUE, TRUE, 6);
    gtk_widget_show (check_button);

    response = gtk_dialog_run (GTK_DIALOG (dialog));

    if (response == GTK_RESPONSE_OK)
        e_shell_settings_set_boolean (
            shell_settings,
            "mail-prompt-delete-in-vfolder",
            gtk_toggle_button_get_active (
            GTK_TOGGLE_BUTTON (check_button)));

    gtk_widget_destroy (dialog);

    return (response == GTK_RESPONSE_OK);
}

void
e_mail_reader_mark_as_read (EMailReader *reader,
                            const gchar *uid)
{
    EMFormatHTMLDisplay *html_display;
    MessageList *message_list;
    CamelFolder *folder;
    guint32 mask, set;
    guint32 flags;

    g_return_if_fail (E_IS_MAIL_READER (reader));
    g_return_if_fail (uid != NULL);

    html_display = e_mail_reader_get_html_display (reader);
    message_list = e_mail_reader_get_message_list (reader);

    folder = message_list->folder;
    flags = camel_folder_get_message_flags (folder, uid);

    if (!(flags & CAMEL_MESSAGE_SEEN)) {
        CamelMimeMessage *message;

        message = ((EMFormat *) html_display)->message;
        em_utils_handle_receipt (folder, uid, message);
    }

    mask = CAMEL_MESSAGE_SEEN;
    set  = CAMEL_MESSAGE_SEEN;
    camel_folder_set_message_flags (folder, uid, mask, set);
}

guint
e_mail_reader_mark_selected (EMailReader *reader,
                             guint32 mask,
                             guint32 set)
{
    MessageList *message_list;
    CamelFolder *folder;
    GPtrArray *uids;
    guint ii;

    g_return_val_if_fail (E_IS_MAIL_READER (reader), 0);

    message_list = e_mail_reader_get_message_list (reader);

    folder = message_list->folder;
    if (folder == NULL)
        return 0;

    camel_folder_freeze (folder);
    uids = message_list_get_selected (message_list);

    for (ii = 0; ii < uids->len; ii++)
        camel_folder_set_message_flags (
            folder, uids->pdata[ii], mask, set);

    message_list_free_uids (message_list, uids);
    camel_folder_thaw (folder);

    return ii;
}

guint
e_mail_reader_open_selected (EMailReader *reader)
{
    EShellBackend *shell_backend;
    MessageList *message_list;
    CamelFolder *folder;
    GtkWindow *window;
    GPtrArray *views;
    GPtrArray *uids;
    const gchar *folder_uri;
    guint ii;

    g_return_val_if_fail (E_IS_MAIL_READER (reader), 0);

    message_list = e_mail_reader_get_message_list (reader);
    shell_backend = e_mail_reader_get_shell_backend (reader);
    window = e_mail_reader_get_window (reader);

    folder = message_list->folder;
    folder_uri = message_list->folder_uri;
    uids = message_list_get_selected (message_list);

    if (uids->len >= 10) {
        gchar *len_str;
        gboolean proceed;

        len_str = g_strdup_printf ("%d", uids->len);

        proceed = em_utils_prompt_user (
            window, "/apps/evolution/mail/prompts/open_many",
            "mail:ask-open-many", len_str, NULL);

        g_free (len_str);

        if (!proceed) {
            message_list_free_uids (message_list, uids);
            return 0;
        }
    }

    if (em_utils_folder_is_drafts (folder, folder_uri) ||
        em_utils_folder_is_outbox (folder, folder_uri) ||
        em_utils_folder_is_templates (folder, folder_uri)) {
        em_utils_edit_messages (folder, uids, TRUE);
        return uids->len;
    }

    views = g_ptr_array_new ();

    /* For vfolders we need to edit the original, not the vfolder copy. */
    for (ii = 0; ii < uids->len; ii++) {
        const gchar *uid = uids->pdata[ii];
        CamelFolder *real_folder;
        CamelMessageInfo *info;
        gchar *real_folder_uri;
        gchar *real_uid;

        if (!CAMEL_IS_VEE_FOLDER (folder)) {
            g_ptr_array_add (views, g_strdup (uid));
            continue;
        }

        info = camel_folder_get_message_info (folder, uid);
        if (info == NULL)
            continue;

        real_folder = camel_vee_folder_get_location (
            CAMEL_VEE_FOLDER (folder),
            (CamelVeeMessageInfo *) info, &real_uid);
        real_folder_uri = mail_tools_folder_to_url (real_folder);

        if (em_utils_folder_is_drafts (real_folder, real_folder_uri) ||
            em_utils_folder_is_outbox (real_folder, real_folder_uri)) {
            GPtrArray *edits;

            edits = g_ptr_array_new ();
            g_ptr_array_add (edits, real_uid);
            em_utils_edit_messages (real_folder, edits, TRUE);
        } else {
            g_free (real_uid);
            g_ptr_array_add (views, g_strdup (uid));
        }

        g_free (real_folder_uri);
    }

    for (ii = 0; ii < views->len; ii++) {
        const gchar *uid = views->pdata[ii];
        GtkWidget *browser;

        browser = e_mail_browser_new (shell_backend);
        e_mail_reader_set_folder (
            E_MAIL_READER (browser), folder, folder_uri);
        e_mail_reader_set_message (
            E_MAIL_READER (browser), uid, FALSE);
        gtk_widget_show (browser);
    }

    g_ptr_array_free (views, TRUE);

    message_list_free_uids (message_list, uids);

    return ii;
}

void
e_mail_reader_print (EMailReader *reader,
                     GtkPrintOperationAction action)
{
    MessageList *message_list;
    EMFormatHTMLDisplay *html_display;
    EMFormatHTMLPrint *html_print;
    CamelFolder *folder;
    GPtrArray *uids;

    g_return_if_fail (E_IS_MAIL_READER (reader));

    html_display = e_mail_reader_get_html_display (reader);
    message_list = e_mail_reader_get_message_list (reader);

    folder = message_list->folder;
    g_return_if_fail (folder != NULL);

    /* XXX Learn to handle len > 1. */
    uids = message_list_get_selected (message_list);
    if (uids->len != 1)
        goto exit;

    html_print = em_format_html_print_new (
        (EMFormatHTML *) html_display, action);
    em_format_merge_handler (
        (EMFormat *) html_print,
        (EMFormat *) html_display);
    em_format_html_print_message (html_print, folder, uids->pdata[0]);
    g_object_unref (html_print);

exit:
    message_list_free_uids (message_list, uids);
}

/* Helper for e_mail_reader_reply_to_message()
 * XXX This function belongs in e-html-utils.c */
static gboolean
html_contains_nonwhitespace (const gchar *html,
                             gint len)
{
    const gchar *cp;
    gunichar uc = 0;

    if (html == NULL || len <= 0)
        return FALSE;

    cp = html;

    while (cp != NULL && cp - html < len) {
        uc = g_utf8_get_char (cp);
        if (uc == 0)
            break;

        if (uc == '<') {
            /* skip until next '>' */
            uc = g_utf8_get_char (cp);
            while (uc != 0 && uc != '>' && cp - html < len) {
                cp = g_utf8_next_char (cp);
                uc = g_utf8_get_char (cp);
            }
            if (uc == 0)
                break;
        } else if (uc == '&') {
            /* sequence '&nbsp;' is a space */
            if (g_ascii_strncasecmp (cp, "&nbsp;", 6) == 0)
                cp = cp + 5;
            else
                break;
        } else if (!g_unichar_isspace (uc))
            break;

        cp = g_utf8_next_char (cp);
    }

    return cp - html < len - 1 && uc != 0;
}

void
e_mail_reader_reply_to_message (EMailReader *reader,
                                gint reply_mode)
{
    EMFormatHTMLDisplay *html_display;
    MessageList *message_list;
    CamelMimeMessage *new_message;
    CamelMimeMessage *src_message;
    CamelFolder *folder;
    GtkWindow *window;
    GtkHTML *html;
    struct _camel_header_raw *header;
    const gchar *uid;
    gchar *selection = NULL;
    gint length;

    /* This handles quoting only selected text in the reply.  If
     * nothing is selected or only whitespace is selected, fall
     * back to the normal em_utils_reply_to_message(). */

    g_return_if_fail (E_IS_MAIL_READER (reader));

    html_display = e_mail_reader_get_html_display (reader);
    html = ((EMFormatHTML *) html_display)->html;

    message_list = e_mail_reader_get_message_list (reader);
    window = e_mail_reader_get_window (reader);

    folder = message_list->folder;
    uid = message_list->cursor_uid;
    g_return_if_fail (uid != NULL);

    if (!gtk_html_command (html, "is-selection-active"))
        goto whole_message;

    selection = gtk_html_get_selection_html (html, &length);
    if (selection == NULL || *selection == '\0')
        goto whole_message;

    if (!html_contains_nonwhitespace (selection, length))
        goto whole_message;

    src_message =
        CAMEL_MIME_MESSAGE (((EMFormat *) html_display)->message);
    new_message = camel_mime_message_new ();

    /* Filter out "content-*" headers. */
    header = CAMEL_MIME_PART (src_message)->headers;
    while (header != NULL) {
        if (g_ascii_strncasecmp (header->name, "content-", 8) != 0)
            camel_medium_add_header (
                CAMEL_MEDIUM (new_message),
                header->name, header->value);
    }

    camel_mime_part_set_encoding (
        CAMEL_MIME_PART (new_message),
        CAMEL_TRANSFER_ENCODING_8BIT);

    camel_mime_part_set_content (
        CAMEL_MIME_PART (new_message),
        selection, length, "text/html");

    em_utils_reply_to_message (
        folder, uid, new_message, reply_mode, NULL);

    g_free (selection);

    return;

whole_message:
    em_utils_reply_to_message (
        folder, uid, NULL, reply_mode, (EMFormat *) html_display);
}

void
e_mail_reader_select_next_message (EMailReader *reader,
                                   gboolean or_else_previous)
{
    MessageList *message_list;
    gboolean hide_deleted;
    gboolean success;

    g_return_if_fail (E_IS_MAIL_READER (reader));

    hide_deleted = e_mail_reader_get_hide_deleted (reader);
    message_list = e_mail_reader_get_message_list (reader);

    success = message_list_select (
        message_list, MESSAGE_LIST_SELECT_NEXT, 0, 0);

    if (!success && (hide_deleted || or_else_previous))
        message_list_select (
            message_list, MESSAGE_LIST_SELECT_PREVIOUS, 0, 0);
}

/* Helper for e_mail_reader_create_filter_from_selected() */
static void
mail_reader_create_filter_cb (CamelFolder *folder,
                              const gchar *uid,
                              CamelMimeMessage *message,
                              gpointer user_data)
{
    struct {
        const gchar *source;
        gint type;
    } *filter_data = user_data;

    if (message != NULL)
        filter_gui_add_from_message (
            message, filter_data->source, filter_data->type);

    g_free (filter_data);
}

void
e_mail_reader_create_filter_from_selected (EMailReader *reader,
                                           gint filter_type)
{
    MessageList *message_list;
    CamelFolder *folder;
    const gchar *filter_source;
    const gchar *folder_uri;
    GPtrArray *uids;

    struct {
        const gchar *source;
        gint type;
    } *filter_data;

    g_return_if_fail (E_IS_MAIL_READER (reader));

    message_list = e_mail_reader_get_message_list (reader);

    folder = message_list->folder;
    folder_uri = message_list->folder_uri;

    if (em_utils_folder_is_sent (folder, folder_uri))
        filter_source = FILTER_SOURCE_OUTGOING;
    else if (em_utils_folder_is_outbox (folder, folder_uri))
        filter_source = FILTER_SOURCE_OUTGOING;
    else
        filter_source = FILTER_SOURCE_INCOMING;

    uids = message_list_get_selected (message_list);

    if (uids->len == 1) {
        filter_data = g_malloc (sizeof (*filter_data));
        filter_data->source = filter_source;
        filter_data->type = filter_type;

        mail_get_message (
            folder, uids->pdata[0],
            mail_reader_create_filter_cb,
            filter_data, mail_msg_unordered_push);
    }

    em_utils_uids_free (uids);
}

/* Helper for e_mail_reader_create_vfolder_from_selected() */
static void
mail_reader_create_vfolder_cb (CamelFolder *folder,
                               const gchar *uid,
                               CamelMimeMessage *message,
                               gpointer user_data)
{
    struct {
        gchar *uri;
        gint type;
    } *vfolder_data = user_data;

    if (message != NULL)
        vfolder_gui_add_from_message (
            message, vfolder_data->type, vfolder_data->uri);

    g_free (vfolder_data->uri);
    g_free (vfolder_data);
}

void
e_mail_reader_create_vfolder_from_selected (EMailReader *reader,
                                            gint vfolder_type)
{
    MessageList *message_list;
    CamelFolder *folder;
    const gchar *folder_uri;
    GPtrArray *uids;

    struct {
        gchar *uri;
        gint type;
    } *vfolder_data;

    g_return_if_fail (E_IS_MAIL_READER (reader));

    message_list = e_mail_reader_get_message_list (reader);

    folder = message_list->folder;
    folder_uri = message_list->folder_uri;

    uids = message_list_get_selected (message_list);

    if (uids->len == 1) {
        vfolder_data = g_malloc (sizeof (*vfolder_data));
        vfolder_data->uri = g_strdup (folder_uri);
        vfolder_data->type = vfolder_type;

        mail_get_message (
            folder, uids->pdata[0],
            mail_reader_create_vfolder_cb,
            vfolder_data, mail_msg_unordered_push);
    }

    em_utils_uids_free (uids);
}