mirror of
https://github.com/djcb/mu.git
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401 lines
9.9 KiB
C
401 lines
9.9 KiB
C
/*
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** Copyright (C) 2011 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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**
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** This program is free software; you can redistribute it and/or modify it
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** under the terms of the GNU General Public License as published by the
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** Free Software Foundation; either version 3, or (at your option) any
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** later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#include <webkit/webkitwebview.h>
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#include <webkit/webkitnetworkresponse.h>
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#include <webkit/webkitwebnavigationaction.h>
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#include <webkit/webkitwebpolicydecision.h>
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#include "mu-msg-body-view.h"
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#include <mu-msg-part.h>
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enum _ViewMode {
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VIEW_MODE_MSG,
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VIEW_MODE_SOURCE,
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VIEW_MODE_NOTE,
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VIEW_MODE_NONE
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};
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typedef enum _ViewMode ViewMode;
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/* 'private'/'protected' functions */
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static void mu_msg_body_view_class_init (MuMsgBodyViewClass *klass);
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static void mu_msg_body_view_init (MuMsgBodyView *obj);
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static void mu_msg_body_view_finalize (GObject *obj);
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/* list my signals */
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enum {
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ACTION_REQUESTED,
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/* MY_SIGNAL_2, */
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LAST_SIGNAL
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};
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struct _MuMsgBodyViewPrivate {
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WebKitWebSettings *_settings;
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MuMsg *_msg;
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ViewMode _view_mode;
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};
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#define MU_MSG_BODY_VIEW_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE((o), \
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MU_TYPE_MSG_BODY_VIEW, \
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MuMsgBodyViewPrivate))
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/* globals */
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static WebKitWebViewClass *parent_class = NULL;
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static guint signals[LAST_SIGNAL] = {0};
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G_DEFINE_TYPE (MuMsgBodyView, mu_msg_body_view, WEBKIT_TYPE_WEB_VIEW);
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static void
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set_message (MuMsgBodyView *self, MuMsg *msg)
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{
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if (self->_priv->_msg == msg)
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return; /* nothing to todo */
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if (self->_priv->_msg) {
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mu_msg_unref (self->_priv->_msg);
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self->_priv->_msg = NULL;
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}
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if (msg)
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self->_priv->_msg = mu_msg_ref (msg);
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}
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static void
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mu_msg_body_view_class_init (MuMsgBodyViewClass *klass)
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{
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GObjectClass *gobject_class;
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gobject_class = (GObjectClass*) klass;
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = mu_msg_body_view_finalize;
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g_type_class_add_private (gobject_class, sizeof(MuMsgBodyViewPrivate));
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signals[ACTION_REQUESTED] =
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g_signal_new ("action-requested",
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G_TYPE_FROM_CLASS (gobject_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (MuMsgBodyViewClass,
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action_requested),
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NULL, NULL,
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g_cclosure_marshal_VOID__STRING,
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G_TYPE_NONE, 1, G_TYPE_STRING);
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}
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static char*
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save_file_for_cid (MuMsg *msg, const char* cid)
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{
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gint idx;
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gchar *filepath;
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gboolean rv;
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GError *err;
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g_return_val_if_fail (msg, NULL);
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g_return_val_if_fail (cid, NULL);
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idx = mu_msg_part_find_cid (msg, cid);
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if (idx < 0) {
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g_warning ("%s: cannot find %s", __FUNCTION__, cid);
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return NULL;
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}
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filepath = mu_msg_part_filepath_cache (msg, idx);
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if (!filepath) {
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g_warning ("%s: cannot create filepath", filepath);
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return NULL;
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}
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err = NULL;
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rv = mu_msg_part_save (msg, filepath, idx, FALSE, TRUE, &err);
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if (!rv) {
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g_warning ("%s: failed to save %s: %s", __FUNCTION__, filepath,
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err&&err->message?err->message:"error");
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if (err)
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g_error_free (err);
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g_free (filepath);
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filepath = NULL;
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}
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return filepath;
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}
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static gboolean
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on_navigation_policy_decision_requested (MuMsgBodyView *self, WebKitWebFrame *frame,
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WebKitNetworkRequest *request,
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WebKitWebNavigationAction *nav_action,
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WebKitWebPolicyDecision *policy_decision,
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gpointer data)
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{
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const char* uri;
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WebKitWebNavigationReason reason;
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uri = webkit_network_request_get_uri (request);
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reason = webkit_web_navigation_action_get_reason (nav_action);
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/* if it wasn't a user click, don't the navigation */
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if (reason != WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED) {
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webkit_web_policy_decision_ignore (policy_decision);
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return TRUE;
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}
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/* we handle links clicked ourselves, no need for navigation */
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webkit_web_policy_decision_ignore (policy_decision);
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/* if there are 'cmd:<action>" links in the body text of
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* mu-internal messages (ie., notification from mu, not real
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* e-mail messages), we emit the 'action requested'
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* signal. this allows e.g triggering a database refresh from
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* a <a href="cmd:refresh">Refresh</a> link
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*/
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if (g_ascii_strncasecmp (uri, "cmd:", 4) == 0) {
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if (self->_priv->_view_mode == VIEW_MODE_NOTE) {
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g_signal_emit (G_OBJECT(self),
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signals[ACTION_REQUESTED], 0,
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uri + 4);
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}
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return TRUE;
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}
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/* don't try to play files on our local file system, this is not something
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* external content should do.*/
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if (!mu_util_is_local_file(uri))
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mu_util_play (uri, FALSE, TRUE);
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return TRUE;
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}
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static void
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on_resource_request_starting (MuMsgBodyView *self, WebKitWebFrame *frame,
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WebKitWebResource *resource, WebKitNetworkRequest *request,
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WebKitNetworkResponse *response, gpointer data)
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{
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const char* uri;
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MuMsg *msg;
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msg = self->_priv->_msg;
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uri = webkit_network_request_get_uri (request);
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/* g_warning ("%s: %s", __FUNCTION__, uri); */
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if (g_ascii_strncasecmp (uri, "cid:", 4) == 0) {
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gchar *filepath;
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filepath = save_file_for_cid (msg, uri);
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if (filepath) {
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gchar *fileuri;
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fileuri = g_strdup_printf ("file://%s", filepath);
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webkit_network_request_set_uri (request, fileuri);
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g_free (fileuri);
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g_free (filepath);
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}
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}
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}
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static void
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on_menu_item_activate (GtkMenuItem *item, MuMsgBodyView *self)
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{
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g_signal_emit (G_OBJECT(self),
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signals[ACTION_REQUESTED], 0,
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g_object_get_data (G_OBJECT(item), "action"));
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}
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static void
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popup_menu (MuMsgBodyView *self, guint button, guint32 activate_time)
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{
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GtkWidget *menu;
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int i;
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struct {
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const char* title;
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const char* action;
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ViewMode mode;
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} actions[] = {
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{ "View source...", "view-source", VIEW_MODE_MSG },
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{ "View message...", "view-message", VIEW_MODE_SOURCE },
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};
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menu = gtk_menu_new ();
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for (i = 0; i != G_N_ELEMENTS(actions); ++i) {
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GtkWidget *item;
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if (self->_priv->_view_mode != actions[i].mode)
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continue;
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item = gtk_menu_item_new_with_label(actions[i].title);
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g_object_set_data (G_OBJECT(item), "action", (gpointer)actions[i].action);
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g_signal_connect (item, "activate", G_CALLBACK(on_menu_item_activate),
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self);
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gtk_menu_attach (GTK_MENU(menu), item, 0, 1, i, i+1);
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gtk_widget_show (item);
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}
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gtk_menu_popup (GTK_MENU(menu), NULL, NULL, NULL, NULL, 0, 0);
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}
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static gboolean
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on_button_press_event (MuMsgBodyView *self, GdkEventButton *event, gpointer data)
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{
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/* ignore all but the first (typically, left) mouse button */
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switch (event->button) {
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case 1: return FALSE; /* propagate, let widget handle it */
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case 3:
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/* no popup menus for notes */
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if (self->_priv->_view_mode != VIEW_MODE_NOTE)
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popup_menu (self, event->button, event->time);
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break;
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default: return TRUE; /* ignore */
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}
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return (event->button > 1) ? TRUE : FALSE;
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}
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static void
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mu_msg_body_view_init (MuMsgBodyView *obj)
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{
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obj->_priv = MU_MSG_BODY_VIEW_GET_PRIVATE(obj);
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obj->_priv->_msg = NULL;
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obj->_priv->_view_mode = VIEW_MODE_NONE;
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obj->_priv->_settings = webkit_web_settings_new ();
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g_object_set (G_OBJECT(obj->_priv->_settings),
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"enable-scripts", FALSE,
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"auto-load-images", TRUE,
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"enable-plugins", FALSE,
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NULL);
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webkit_web_view_set_settings (WEBKIT_WEB_VIEW(obj),
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obj->_priv->_settings);
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webkit_web_view_set_editable (WEBKIT_WEB_VIEW(obj), FALSE);
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/* to support cid: */
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g_signal_connect (obj, "resource-request-starting",
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G_CALLBACK (on_resource_request_starting), NULL);
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/* handle navigation requests */
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g_signal_connect (obj, "navigation-policy-decision-requested",
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G_CALLBACK (on_navigation_policy_decision_requested), NULL);
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/* handle right-button clicks */
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g_signal_connect (obj, "button-press-event",
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G_CALLBACK(on_button_press_event), NULL);
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}
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static void
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mu_msg_body_view_finalize (GObject *obj)
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{
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MuMsgBodyViewPrivate *priv;
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priv = MU_MSG_BODY_VIEW_GET_PRIVATE(obj);
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if (priv && priv->_settings)
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g_object_unref (priv->_settings);
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set_message (MU_MSG_BODY_VIEW(obj), NULL);
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G_OBJECT_CLASS(parent_class)->finalize (obj);
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}
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GtkWidget*
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mu_msg_body_view_new (void)
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{
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return GTK_WIDGET(g_object_new(MU_TYPE_MSG_BODY_VIEW, NULL));
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}
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void
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set_html (MuMsgBodyView *self, const char* html)
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{
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g_return_if_fail (MU_IS_MSG_BODY_VIEW(self));
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webkit_web_view_load_string (WEBKIT_WEB_VIEW(self),
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html ? html : "",
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"text/html",
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"utf-8",
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"");
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}
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static void
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set_text (MuMsgBodyView *self, const char* txt)
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{
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g_return_if_fail (MU_IS_MSG_BODY_VIEW(self));
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webkit_web_view_load_string (WEBKIT_WEB_VIEW(self),
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txt ? txt : "",
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"text/plain",
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"utf-8",
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"");
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}
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void
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mu_msg_body_view_set_message (MuMsgBodyView *self, MuMsg *msg)
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{
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const char* data;
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g_return_if_fail (self);
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set_message (self, msg);
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data = msg ? mu_msg_get_body_html (msg) : "";
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if (data)
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set_html (self, data);
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else
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set_text (self, mu_msg_get_body_text (msg));
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self->_priv->_view_mode = VIEW_MODE_MSG;
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}
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void
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mu_msg_body_view_set_message_source (MuMsgBodyView *self, MuMsg *msg)
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{
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const gchar *path;
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gchar *data;
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g_return_if_fail (MU_IS_MSG_BODY_VIEW(self));
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g_return_if_fail (msg);
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set_message (self, NULL);
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path = msg ? mu_msg_get_path (msg) : NULL;
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if (path && g_file_get_contents (path, &data, NULL, NULL)) {
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set_text (self, data);
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g_free (data);
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} else
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set_text (self, "");
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self->_priv->_view_mode = VIEW_MODE_SOURCE;
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}
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void
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mu_msg_body_view_set_note (MuMsgBodyView *self, const gchar *html)
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{
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g_return_if_fail (self);
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g_return_if_fail (html);
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set_message (self, NULL);
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set_html (self, html);
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self->_priv->_view_mode = VIEW_MODE_NOTE;
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}
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