src/ringmainwindow.cpp

/*
 *  Copyright (C) 2015 Savoir-Faire Linux Inc.
 *  Author: Stepan Salenikovich <stepan.salenikovich@savoirfairelinux.com>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
 *
 *  Additional permission under GNU GPL version 3 section 7:
 *
 *  If you modify this program, or any covered work, by linking or
 *  combining it with the OpenSSL project's OpenSSL library (or a
 *  modified version of that library), containing parts covered by the
 *  terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
 *  grants you additional permission to convey the resulting work.
 *  Corresponding Source for a non-source form of such a combination
 *  shall include the source code for the parts of OpenSSL used as well
 *  as that of the covered work.
 */

#include "ringmainwindow.h"

#include <gtk/gtk.h>
#include "models/gtkqtreemodel.h"
#include <callmodel.h>
#include <call.h>
#include <QtCore/QItemSelectionModel>
#include "incomingcallview.h"
#include <string.h>

#define DEFAULT_VIEW_NAME "placeholder"

struct _RingMainWindow
{
    GtkApplicationWindow parent;
};

struct _RingMainWindowClass
{
    GtkApplicationWindowClass parent_class;
};

typedef struct _RingMainWindowPrivate RingMainWindowPrivate;

struct _RingMainWindowPrivate
{
    GtkWidget *gears;
    GtkWidget *gears_image;
    GtkWidget *treeview_call;
    GtkWidget *search_entry;
    GtkWidget *stack_main_view;
    GtkWidget *button_placecall;
};

G_DEFINE_TYPE_WITH_PRIVATE(RingMainWindow, ring_main_window, GTK_TYPE_APPLICATION_WINDOW);

#define RING_MAIN_WINDOW_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), RING_MAIN_WINDOW_TYPE, RingMainWindowPrivate))

static QModelIndex
get_index_from_selection(GtkTreeSelection *selection)
{
    GtkTreeIter iter;
    GtkTreeModel *model = NULL;

    if (gtk_tree_selection_get_selected(selection, &model, &iter)) {
        return gtk_q_tree_model_get_source_idx(GTK_Q_TREE_MODEL(model), &iter);
    } else {
        return QModelIndex();
    }
}

static void
update_call_model_selection(GtkTreeSelection *selection, G_GNUC_UNUSED gpointer user_data)
{
    QModelIndex current = get_index_from_selection(selection);
    if (current.isValid())
        CallModel::instance()->selectionModel()->setCurrentIndex(current, QItemSelectionModel::ClearAndSelect);
    else
       CallModel::instance()->selectionModel()->clearCurrentIndex();
}

static void
call_selection_changed(GtkTreeSelection *selection, gpointer win)
{
    RingMainWindowPrivate *priv = RING_MAIN_WINDOW_GET_PRIVATE(RING_MAIN_WINDOW(win));

    /* get the current visible stack child */
    GtkWidget *child_old = gtk_stack_get_visible_child(GTK_STACK(priv->stack_main_view));

    QModelIndex idx = get_index_from_selection(selection);
    if (idx.isValid()) {
        QVariant state = idx.model()->data(idx, Call::Role::CallState);
        QVariant name = idx.model()->data(idx, Call::Role::Name);
        QByteArray ba_name = name.toString().toLocal8Bit();
        GtkWidget *new_call_view = NULL;

        switch(state.value<Call::State>()) {
            case Call::State::INCOMING:
            {
                new_call_view = incoming_call_view_new();
                incoming_call_view_set_call_info(INCOMING_CALL_VIEW(new_call_view), idx);
            }
            break;

            /* TODO: implement view(s) for other call states */
            case Call::State::RINGING:
            case Call::State::CURRENT:
            case Call::State::DIALING:
            case Call::State::HOLD:
            case Call::State::FAILURE:
            case Call::State::BUSY:
            case Call::State::TRANSFERRED:
            case Call::State::TRANSF_HOLD:
            case Call::State::OVER:
            case Call::State::ERROR:
            case Call::State::CONFERENCE:
            case Call::State::CONFERENCE_HOLD:
            case Call::State::INITIALIZATION:
            case Call::State::COUNT__:
            {
                new_call_view = incoming_call_view_new();
                incoming_call_view_set_call_info(INCOMING_CALL_VIEW(new_call_view), idx);
            }
            break;
        }

        gtk_stack_add_named(GTK_STACK(priv->stack_main_view), new_call_view, ba_name.constData());
        gtk_stack_set_visible_child(GTK_STACK(priv->stack_main_view), new_call_view);

    } else {
        /* nothing selected in the call model, so show the default screen */

        /* TODO: replace stack paceholder view */
        gtk_stack_set_transition_type(GTK_STACK(priv->stack_main_view), GTK_STACK_TRANSITION_TYPE_SLIDE_LEFT);
        gtk_stack_set_visible_child_name(GTK_STACK(priv->stack_main_view), DEFAULT_VIEW_NAME);
        gtk_stack_set_transition_type(GTK_STACK(priv->stack_main_view), GTK_STACK_TRANSITION_TYPE_SLIDE_RIGHT);

    }

     /* check if we changed the visible child */
    GtkWidget *child_current = gtk_stack_get_visible_child(GTK_STACK(priv->stack_main_view));
    if (child_current != child_old && child_old != NULL) {
        /* if the previous child was an "incoming call", then remove it from
         * the stack; removing it should destory it since there should not
         * be any other references to it */
        if (IS_INCOMING_CALL_VIEW(child_old)) {
            gtk_container_remove(GTK_CONTAINER(priv->stack_main_view), child_old);
        }
    }
}

static void
search_entry_placecall(G_GNUC_UNUSED GtkWidget *entry, gpointer win)
{
    RingMainWindowPrivate *priv = RING_MAIN_WINDOW_GET_PRIVATE(RING_MAIN_WINDOW(win));

    const gchar *number = gtk_entry_get_text(GTK_ENTRY(priv->search_entry));

    if (number && strlen(number) > 0) {
        g_debug("dialing to number: %s", number);
        Call *call = CallModel::instance()->dialingCall();
        call->setDialNumber(number);

        call->performAction(Call::Action::ACCEPT);

        /* make this the currently selected call */
        QModelIndex idx = CallModel::instance()->getIndex(call);
        CallModel::instance()->selectionModel()->setCurrentIndex(idx, QItemSelectionModel::ClearAndSelect);
    }
}

static void
ring_main_window_init(RingMainWindow *win)
{
    RingMainWindowPrivate *priv = RING_MAIN_WINDOW_GET_PRIVATE(win);
    gtk_widget_init_template(GTK_WIDGET(win));

     /* set window icon */
    GError *error = NULL;
    GdkPixbuf* icon = gdk_pixbuf_new_from_resource("/cx/ring/RingGnome/ring-symbol-blue", &error);
    if (icon == NULL) {
        g_debug("Could not load icon: %s", error->message);
        g_error_free(error);
    } else
        gtk_window_set_icon(GTK_WINDOW(win), icon);

    /* set menu icon */
    GdkPixbuf* ring_gears = gdk_pixbuf_new_from_resource_at_scale("/cx/ring/RingGnome/ring-logo-blue",
                                                                  -1, 22, TRUE, &error);
    if (ring_gears == NULL) {
        g_debug("Could not load icon: %s", error->message);
        g_error_free(error);
    } else
        gtk_image_set_from_pixbuf(GTK_IMAGE(priv->gears_image), ring_gears);

    /* gears menu */
    GtkBuilder *builder = gtk_builder_new_from_resource("/cx/ring/RingGnome/ringgearsmenu.ui");
    GMenuModel *menu = G_MENU_MODEL(gtk_builder_get_object(builder, "menu"));
    gtk_menu_button_set_menu_model(GTK_MENU_BUTTON(priv->gears), menu);
    g_object_unref(builder);

    /* call model */
    GtkQTreeModel *call_model;
    GtkCellRenderer *renderer;
    GtkTreeViewColumn *column;

    call_model = gtk_q_tree_model_new(CallModel::instance(), 4,
        Call::Role::Name, G_TYPE_STRING,
        Call::Role::Number, G_TYPE_STRING,
        Call::Role::Length, G_TYPE_STRING,
        Call::Role::CallState, G_TYPE_STRING);
    gtk_tree_view_set_model(GTK_TREE_VIEW(priv->treeview_call), GTK_TREE_MODEL(call_model));

    renderer = gtk_cell_renderer_text_new();
    column = gtk_tree_view_column_new_with_attributes("Name", renderer, "text", 0, NULL);
    gtk_tree_view_append_column(GTK_TREE_VIEW(priv->treeview_call), column);

    renderer = gtk_cell_renderer_text_new();
    column = gtk_tree_view_column_new_with_attributes("Duration", renderer, "text", 2, NULL);
    gtk_tree_view_append_column(GTK_TREE_VIEW(priv->treeview_call), column);

    /* connect signals to and from UserActionModel to sync selection betwee
     * the QModel and the GtkTreeView */
    QObject::connect(
        CallModel::instance()->selectionModel(),
        &QItemSelectionModel::currentChanged,
        [=](const QModelIndex & current, const QModelIndex & previous) {
            GtkTreeSelection *selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(priv->treeview_call));

            /* first unselect the previous */
            if (previous.isValid()) {
                GtkTreeIter old_iter;
                if (gtk_q_tree_model_source_index_to_iter(call_model, previous, &old_iter)) {
                    gtk_tree_selection_unselect_iter(selection, &old_iter);
                } else {
                    g_warning("Trying to unselect invalid GtkTreeIter");
                }
            }

            /* select the current */
            if (current.isValid()) {
                GtkTreeIter new_iter;
                if (gtk_q_tree_model_source_index_to_iter(call_model, current, &new_iter)) {
                    gtk_tree_selection_select_iter(selection, &new_iter);
                } else {
                    g_warning("SelectionModel of CallModel changed to invalid QModelIndex?");
                }
            }
        }
    );

    GtkTreeSelection *call_selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(priv->treeview_call));
    g_signal_connect(call_selection, "changed", G_CALLBACK(update_call_model_selection), NULL);

    /* TODO: replace stack paceholder view */
    GtkWidget *placeholder_view = gtk_tree_view_new();
    gtk_widget_show(placeholder_view);
    gtk_stack_add_named(GTK_STACK(priv->stack_main_view), placeholder_view, DEFAULT_VIEW_NAME);

    /* connect signals */
    g_signal_connect(call_selection, "changed", G_CALLBACK(call_selection_changed), win);
    g_signal_connect(priv->button_placecall, "clicked", G_CALLBACK(search_entry_placecall), win);
    g_signal_connect(priv->search_entry, "activate", G_CALLBACK(search_entry_placecall), win);

    /* style of search entry */
    gtk_widget_override_font(priv->search_entry, pango_font_description_from_string("monospace 15"));
}

static void
ring_main_window_class_init(RingMainWindowClass *klass)
{
    gtk_widget_class_set_template_from_resource(GTK_WIDGET_CLASS (klass),
                                                "/cx/ring/RingGnome/ringmainwindow.ui");

    gtk_widget_class_bind_template_child_private(GTK_WIDGET_CLASS (klass), RingMainWindow, treeview_call);
    gtk_widget_class_bind_template_child_private(GTK_WIDGET_CLASS (klass), RingMainWindow, gears);
    gtk_widget_class_bind_template_child_private(GTK_WIDGET_CLASS (klass), RingMainWindow, gears_image);
    gtk_widget_class_bind_template_child_private(GTK_WIDGET_CLASS (klass), RingMainWindow, search_entry);
    gtk_widget_class_bind_template_child_private(GTK_WIDGET_CLASS (klass), RingMainWindow, stack_main_view);
    gtk_widget_class_bind_template_child_private(GTK_WIDGET_CLASS (klass), RingMainWindow, button_placecall);
}

GtkWidget *
ring_main_window_new (GtkApplication *app)
{
    return (GtkWidget *)g_object_new(RING_MAIN_WINDOW_TYPE, "application", app, NULL);
}