global_history.c

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/*
 * Copyright 2010 John Mark Bell <jmb@netsurf-browser.org>
 * Copyright 2016 Vincent Sanders <vince@netsurf-browser.org>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf 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; version 2 of the License.
 *
 * NetSurf 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, see <http://www.gnu.org/licenses/>.
 */
 
/**
 * \file
 * Implementation of GTK global history manager.
 */
 
#include <stdint.h>
#include <stdlib.h>
#include <gtk/gtk.h>
 
#include "utils/log.h"
#include "netsurf/keypress.h"
#include "netsurf/plotters.h"
#include "desktop/global_history.h"
 
#include "gtk/compat.h"
#include "gtk/plotters.h"
#include "gtk/resources.h"
#include "gtk/corewindow.h"
#include "gtk/global_history.h"
 
struct nsgtk_global_history_window {
        struct nsgtk_corewindow core;
        GtkBuilder *builder;
        GtkWindow *wnd;
};
 
static struct nsgtk_global_history_window *global_history_window = NULL;
 
#define MENUPROTO(x) static gboolean nsgtk_on_##x##_activate( \
                GtkMenuItem *widget, gpointer g)
#define MENUEVENT(x) { #x, G_CALLBACK(nsgtk_on_##x##_activate) }
#define MENUHANDLER(x) gboolean nsgtk_on_##x##_activate(GtkMenuItem *widget, \
                gpointer g)
 
struct menu_events {
        const char *widget;
        GCallback handler;
};
 
/* file menu*/
MENUPROTO(export);
 
/* edit menu */
MENUPROTO(delete_selected);
MENUPROTO(delete_all);
MENUPROTO(select_all);
MENUPROTO(clear_selection);
 
/* view menu*/
MENUPROTO(expand_all);
MENUPROTO(expand_directories);
MENUPROTO(expand_addresses);
MENUPROTO(collapse_all);
MENUPROTO(collapse_directories);
MENUPROTO(collapse_addresses);
 
MENUPROTO(launch);
 
static struct menu_events menu_events[] = {
 
        /* file menu*/
        MENUEVENT(export),
 
        /* edit menu */
        MENUEVENT(delete_selected),
        MENUEVENT(delete_all),
        MENUEVENT(select_all),
        MENUEVENT(clear_selection),
 
        /* view menu*/
        MENUEVENT(expand_all),
        MENUEVENT(expand_directories),
        MENUEVENT(expand_addresses),
        MENUEVENT(collapse_all),
        MENUEVENT(collapse_directories),
        MENUEVENT(collapse_addresses),
 
        MENUEVENT(launch),
                  {NULL, NULL}
};
 
/* edit menu */
MENUHANDLER(delete_selected)
{
        global_history_keypress(NS_KEY_DELETE_LEFT);
        return TRUE;
}
 
MENUHANDLER(delete_all)
{
        global_history_keypress(NS_KEY_ESCAPE);
        global_history_keypress(NS_KEY_ESCAPE);
        global_history_keypress(NS_KEY_SELECT_ALL);
        global_history_keypress(NS_KEY_DELETE_LEFT);
        return TRUE;
}
 
MENUHANDLER(select_all)
{
        global_history_keypress(NS_KEY_ESCAPE);
        global_history_keypress(NS_KEY_ESCAPE);
        global_history_keypress(NS_KEY_SELECT_ALL);
        return TRUE;
}
 
MENUHANDLER(clear_selection)
{
        global_history_keypress(NS_KEY_ESCAPE);
        global_history_keypress(NS_KEY_ESCAPE);
        global_history_keypress(NS_KEY_CLEAR_SELECTION);
        return TRUE;
}
 
/* view menu*/
MENUHANDLER(expand_all)
{
        global_history_expand(false);
        return TRUE;
}
 
MENUHANDLER(expand_directories)
{
        global_history_expand(true);
        return TRUE;
}
 
MENUHANDLER(expand_addresses)
{
        global_history_expand(false);
        return TRUE;
}
 
MENUHANDLER(collapse_all)
{
        global_history_contract(true);
        return TRUE;
}
 
MENUHANDLER(collapse_directories)
{
        global_history_contract(true);
        return TRUE;
}
 
MENUHANDLER(collapse_addresses)
{
        global_history_contract(false);
        return TRUE;
}
 
MENUHANDLER(launch)
{
        global_history_keypress(NS_KEY_CR);
        return TRUE;
}
 
/* file menu */
MENUHANDLER(export)
{
        struct nsgtk_global_history_window *ghwin;
        GtkWidget *save_dialog;
 
        ghwin = (struct nsgtk_global_history_window *)g;
 
        save_dialog = gtk_file_chooser_dialog_new("Save File",
                        ghwin->wnd,
                        GTK_FILE_CHOOSER_ACTION_SAVE,
                        NSGTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                        NSGTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
                        NULL);
 
        gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(save_dialog),
                        getenv("HOME") ? getenv("HOME") : "/");
 
        gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(save_dialog),
                        "history.html");
 
        if (gtk_dialog_run(GTK_DIALOG(save_dialog)) == GTK_RESPONSE_ACCEPT) {
                gchar *filename = gtk_file_chooser_get_filename(
                                GTK_FILE_CHOOSER(save_dialog));
 
                global_history_export(filename, NULL);
                g_free(filename);
        }
 
        gtk_widget_destroy(save_dialog);
 
        return TRUE;
}
 
/**
 * Connects menu events in the global history window.
 */
static void
nsgtk_global_history_init_menu(struct nsgtk_global_history_window *ghwin)
{
        struct menu_events *event = menu_events;
        GtkWidget *w;
 
        while (event->widget != NULL) {
                w = GTK_WIDGET(gtk_builder_get_object(ghwin->builder,
                                                      event->widget));
                if (w == NULL) {
                        NSLOG(netsurf, INFO,
                              "Unable to connect menu widget ""%s""",
                              event->widget);
                } else {
                        g_signal_connect(G_OBJECT(w),
                                         "activate",
                                         event->handler,
                                         ghwin);
                }
                event++;
        }
}
 
 
/**
 * callback for mouse action on global history window
 *
 * \param nsgtk_cw The nsgtk core window structure.
 * \param mouse_state netsurf mouse state on event
 * \param x location of event
 * \param y location of event
 * \return NSERROR_OK on success otherwise apropriate error code
 */
static nserror
nsgtk_global_history_mouse(struct nsgtk_corewindow *nsgtk_cw,
                    browser_mouse_state mouse_state,
                    int x, int y)
{
        global_history_mouse_action(mouse_state, x, y);
 
        return NSERROR_OK;
}
 
 
/**
 * callback for keypress on global history window
 *
 * \param nsgtk_cw The nsgtk core window structure.
 * \param nskey The netsurf key code
 * \return NSERROR_OK on success otherwise apropriate error code
 */
static nserror
nsgtk_global_history_key(struct nsgtk_corewindow *nsgtk_cw, uint32_t nskey)
{
        if (global_history_keypress(nskey)) {
                return NSERROR_OK;
        }
        return NSERROR_NOT_IMPLEMENTED;
}
 
 
/**
 * callback on draw event for global history window
 *
 * \param nsgtk_cw The nsgtk core window structure.
 * \param r The rectangle of the window that needs updating.
 * \return NSERROR_OK on success otherwise apropriate error code
 */
static nserror
nsgtk_global_history_draw(struct nsgtk_corewindow *nsgtk_cw, struct rect *r)
{
        struct redraw_context ctx = {
                .interactive = true,
                .background_images = true,
                .plot = &nsgtk_plotters
        };
 
        global_history_redraw(0, 0, r, &ctx);
 
        return NSERROR_OK;
}
 
/**
 * Creates the window for the global history tree.
 *
 * \return NSERROR_OK on success else appropriate error code on faliure.
 */
static nserror nsgtk_global_history_init(void)
{
        struct nsgtk_global_history_window *ncwin;
        nserror res;
 
        if (global_history_window != NULL) {
                return NSERROR_OK;
        }
 
        ncwin = calloc(1, sizeof(*ncwin));
        if (ncwin == NULL) {
                return NSERROR_NOMEM;
        }
 
        res = nsgtk_builder_new_from_resname("globalhistory", &ncwin->builder);
        if (res != NSERROR_OK) {
                NSLOG(netsurf, INFO, "History UI builder init failed");
                free(ncwin);
                return res;
        }
 
        gtk_builder_connect_signals(ncwin->builder, NULL);
 
        ncwin->wnd = GTK_WINDOW(gtk_builder_get_object(ncwin->builder,
                                                       "wndHistory"));
 
        ncwin->core.scrolled = GTK_SCROLLED_WINDOW(
                gtk_builder_get_object(ncwin->builder,
                                       "globalHistoryScrolled"));
 
        ncwin->core.drawing_area = GTK_DRAWING_AREA(
                gtk_builder_get_object(ncwin->builder,
                                       "globalHistoryDrawingArea"));
 
        /* make the delete event hide the window */
        g_signal_connect(G_OBJECT(ncwin->wnd),
                         "delete_event",
                         G_CALLBACK(gtk_widget_hide_on_delete),
                         NULL);
 
        nsgtk_global_history_init_menu(ncwin);
 
        ncwin->core.draw = nsgtk_global_history_draw;
        ncwin->core.key = nsgtk_global_history_key;
        ncwin->core.mouse = nsgtk_global_history_mouse;
 
        res = nsgtk_corewindow_init(&ncwin->core);
        if (res != NSERROR_OK) {
                free(ncwin);
                return res;
        }
 
        res = global_history_init(ncwin->core.cb_table,
                                  (struct core_window *)ncwin);
        if (res != NSERROR_OK) {
                free(ncwin);
                return res;
        }
 
        /* memoise window so it can be represented when necessary
         * instead of recreating every time.
         */
        global_history_window = ncwin;
 
        return NSERROR_OK;
}
 
 
/* exported function documented gtk/history.h */
nserror nsgtk_global_history_present(void)
{
        nserror res;
 
        res = nsgtk_global_history_init();
        if (res == NSERROR_OK) {
                gtk_window_present(global_history_window->wnd);
        }
        return res;
}
 
 
/* exported function documented gtk/history.h */
nserror nsgtk_global_history_destroy(void)
{
        nserror res;
 
        if (global_history_window == NULL) {
                return NSERROR_OK;
        }
 
        res = global_history_fini();
        if (res == NSERROR_OK) {
                res = nsgtk_corewindow_fini(&global_history_window->core);
                gtk_widget_destroy(GTK_WIDGET(global_history_window->wnd));
                g_object_unref(G_OBJECT(global_history_window->builder));
                free(global_history_window);
                global_history_window = NULL;
        }
 
        return res;
 
}