/*
 * Copyright (C) 2004 John Ellis
 * Copyright (C) 2008 - 2017 The Geeqie Team
 *
 * Author: Colin Clark
 *
 * 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 2 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.
 */

#include "main.h"
#include "toolbar.h"

#include "collect.h"
#include "layout_util.h"
#include "ui_fileops.h"
#include "ui_misc.h"
#include "pixbuf_util.h"
#include "ui_menu.h"
#include "editors.h"

/** Implements the user-definable toolbar function
 * Called from the Preferences/toolbar tab
 **/

typedef struct _ToolbarData ToolbarData;
struct _ToolbarData
{
	GtkWidget *widget;
	GtkWidget *vbox;
	GtkWidget *add_button;

	LayoutWindow *lw;
};

typedef struct _ToolbarButtonData ToolbarButtonData;
struct _ToolbarButtonData
{
	GtkWidget *button;
	GtkWidget *button_label;
	GtkWidget *image;

	gchar *name; /* GtkActionEntry terminology */
	gchar *stock_id;
};

static 	ToolbarData *toolbarlist;

typedef struct _UseableToolbarItems UseableToolbarItems;
struct _UseableToolbarItems
{
	gchar *name; /* GtkActionEntry terminology */
	gchar *label;
	gchar *stock_id;
};

/* FIXME Should be created by program from menu_entries[]
 * in layout_util.c */
 /** The user is limited to selecting from this list of menu items
  * plus any desktop files
  **/
static const UseableToolbarItems useable_toolbar_items[] = {
	{"FirstImage",	N_("First Image"), GTK_STOCK_GOTO_TOP},
	{"PrevImage",	N_("Previous Image"), GTK_STOCK_GO_UP},
	{"NextImage",	N_("Next Image"), GTK_STOCK_GO_DOWN},
	{"LastImage",	N_("Last Image"), GTK_STOCK_GOTO_BOTTOM},
	{"Back",	N_("Back"), GTK_STOCK_GO_BACK},
	{"Forward",	N_("Forward"), GTK_STOCK_GO_FORWARD},
	{"Home",	N_("Home"), GTK_STOCK_HOME},
	{"Up",	N_("Up"), GTK_STOCK_GO_UP},
	{"NewWindow",	N_("New _window"), GTK_STOCK_NEW},
	{"NewCollection",	N_("New collection"), GTK_STOCK_INDEX},
	{"OpenCollection",	N_("Open collection"), GTK_STOCK_OPEN},
	{"Search",	N_("Search"), GTK_STOCK_FIND},
	{"FindDupes",	N_("Find duplicates"), GTK_STOCK_FIND},
	{"NewFolder",	N_("New folder"),GTK_STOCK_DIRECTORY},
	{"Copy",	N_("Copy"), GTK_STOCK_COPY},
	{"Move",	N_("Move"), PIXBUF_INLINE_ICON_MOVE},
	{"Rename",	N_("Rename"), PIXBUF_INLINE_ICON_RENAME},
	{"Delete",	N_("Delete"), GTK_STOCK_DELETE},
	{"CloseWindow",	N_("Close Window"), GTK_STOCK_CLOSE},
	{"PanView",	N_("Pan view"), PIXBUF_INLINE_ICON_PANORAMA},
	{"SelectAll",	N_("Select all"), PIXBUF_INLINE_ICON_SELECT_ALL},
	{"SelectNone",	N_("Select none"), PIXBUF_INLINE_ICON_SELECT_NONE},
	{"SelectInvert",	N_("Select invert"), PIXBUF_INLINE_ICON_SELECT_INVERT},
	{"RectangularSelection",	N_("Select rectangle"), PIXBUF_INLINE_ICON_SELECT_RECTANGLE},
	{"Print",	N_("Print"), GTK_STOCK_PRINT},
	{"Preferences",	N_("Preferences"), GTK_STOCK_PREFERENCES},
	{"LayoutConfig",	N_("Configure this window"), GTK_STOCK_PREFERENCES},
	{"Maintenance",	N_("Cache maintenance"), PIXBUF_INLINE_ICON_MAINTENANCE},
	{"ZoomIn",	N_("Zoom in"), GTK_STOCK_ZOOM_IN},
	{"ZoomOut",	N_("Zoom out"), GTK_STOCK_ZOOM_OUT},
	{"Zoom100",	N_("Zoom 1:1"), GTK_STOCK_ZOOM_100},
	{"ZoomFit",	N_("Zoom to fit"), GTK_STOCK_ZOOM_FIT},
	{"ZoomFillHor",	N_("Fit Horizontaly"), PIXBUF_INLINE_ICON_ZOOMFILLHOR},
	{"ZoomFillVert",	N_("Fit vertically"), PIXBUF_INLINE_ICON_ZOOMFILLVERT},
	{"Zoom200",	N_("Zoom 2:1"), GTK_STOCK_FILE},
	{"Zoom300",	N_("Zoom 3:1"), GTK_STOCK_FILE},
	{"Zoom400",	N_("Zoom 4:1"), GTK_STOCK_FILE},
	{"Zoom50",	N_("Zoom 1:2"), GTK_STOCK_FILE},
	{"Zoom33",	N_("Zoom1:3"), GTK_STOCK_FILE},
	{"Zoom25",	N_("Zoom 1:4"), GTK_STOCK_FILE},
	{"ConnectZoomIn",	N_("Connected Zoom in"), GTK_STOCK_ZOOM_IN},
	{"HideTools",	N_("Hide file list"), PIXBUF_INLINE_ICON_HIDETOOLS},
	{"SlideShowPause",	N_("Pause slideshow"), GTK_STOCK_MEDIA_PAUSE},
	{"SlideShowFaster",	N_("Slideshow Faster"), GTK_STOCK_FILE},
	{"SlideShowSlower",	N_("Slideshow Slower"), GTK_STOCK_FILE},
	{"Refresh",	N_("Refresh"), GTK_STOCK_REFRESH},
	{"HelpContents",	N_("Help"), GTK_STOCK_HELP},
	{"ExifWin",	N_("Exif window"), PIXBUF_INLINE_ICON_EXIF},
	{"Thumbnails",	N_("Show thumbnails"), PIXBUF_INLINE_ICON_THUMB},
	{"ShowMarks",	N_("Show marks"), PIXBUF_INLINE_ICON_MARKS},
	{"ImageGuidelines",	N_("Show guidelines"), PIXBUF_INLINE_ICON_GUIDELINES},
	{"DrawRectangle",	N_("Draw Rectangle"), PIXBUF_INLINE_ICON_DRAW_RECTANGLE},
	{"FloatTools",	N_("Float file list"), PIXBUF_INLINE_ICON_FLOAT},
	{"SBar",	N_("Info sidebar"), PIXBUF_INLINE_ICON_INFO},
	{"SBarSort",	N_("Sort manager"), PIXBUF_INLINE_ICON_SORT},
	{"Quit",	N_("Quit"), GTK_STOCK_QUIT},
	{NULL,		NULL, NULL}
};

/**
 * @brief
 * @param widget Not used
 * @param data Pointer to vbox list item
 * @param up Up/Down movement
 * @param single_step Move up/down one step, or to top/bottom
 * 
 */
static void toolbar_item_move(GtkWidget *widget, gpointer data,
									gboolean up, gboolean single_step)
{
	GtkWidget *list_item = data;
	GtkWidget *box;
	gint pos = 0;

	if (!list_item) return;
	box = gtk_widget_get_ancestor(list_item, GTK_TYPE_BOX);
	if (!box) return;

	gtk_container_child_get(GTK_CONTAINER(box), list_item, "position", &pos, NULL);

	if (single_step)
		{
		pos = up ? (pos - 1) : (pos + 1);
		if (pos < 0) pos = 0;
		}
	else
		{
		pos = up ? 0 : -1;
		}

	gtk_box_reorder_child(GTK_BOX(box), list_item, pos);
}

static void toolbar_item_move_up_cb(GtkWidget *widget, gpointer data)
{
	toolbar_item_move(widget, data, TRUE, TRUE);
}

static void toolbar_item_move_down_cb(GtkWidget *widget, gpointer data)
{
	toolbar_item_move(widget, data, FALSE, TRUE);
}

static void toolbar_item_move_top_cb(GtkWidget *widget, gpointer data)
{
	toolbar_item_move(widget, data, TRUE, FALSE);
}

static void toolbar_item_move_bottom_cb(GtkWidget *widget, gpointer data)
{
	toolbar_item_move(widget, data, FALSE, FALSE);
}

static void toolbar_item_delete_cb(GtkWidget *widget, gpointer data)
{
	gtk_widget_destroy(data);
}

static void toolbar_menu_popup(GtkWidget *widget)
{
	GtkWidget *menu;
	GtkWidget *vbox;

	vbox = gtk_widget_get_parent(widget);

	menu = popup_menu_short_lived();

	if (widget)
		{
		menu_item_add_stock(menu, _("Move to _top"), GTK_STOCK_GOTO_TOP, G_CALLBACK(toolbar_item_move_top_cb), widget);
		menu_item_add_stock(menu, _("Move _up"), GTK_STOCK_GO_UP, G_CALLBACK(toolbar_item_move_up_cb), widget);
		menu_item_add_stock(menu, _("Move _down"), GTK_STOCK_GO_DOWN, G_CALLBACK(toolbar_item_move_down_cb), widget);
		menu_item_add_stock(menu, _("Move to _bottom"), GTK_STOCK_GOTO_BOTTOM, G_CALLBACK(toolbar_item_move_bottom_cb), widget);
		menu_item_add_divider(menu);
		menu_item_add_stock(menu, _("Remove"), GTK_STOCK_DELETE, G_CALLBACK(toolbar_item_delete_cb), widget);
		menu_item_add_divider(menu);
		}

	gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, vbox, 0, GDK_CURRENT_TIME);
}

static gboolean toolbar_press_cb(GtkWidget *button, GdkEventButton *event, gpointer data)
{
	ToolbarButtonData *button_data = data;

	if (event->button == MOUSE_BUTTON_RIGHT)
		{
		toolbar_menu_popup(button_data->button);
		return TRUE;
		}
	return FALSE;
}

static void get_toolbar_item(const gchar *name, gchar **label, gchar **stock_id)
{
	const UseableToolbarItems *list = useable_toolbar_items;
	*label = NULL;
	*stock_id = NULL;

	while (list->name)
		{
		if (g_strcmp0(list->name, name) == 0)
			{
			*label = g_strdup(list->label);
			*stock_id = g_strdup(list->stock_id);
			break;
			}
		list++;
		}
}


static void toolbar_item_free(ToolbarButtonData *tbbd)
{
	if (!tbbd) return;

	g_free(tbbd->name);
	g_free(tbbd->stock_id);
	g_free(tbbd);
}

static void toolbar_button_free(GtkWidget *widget)
{
	g_free(g_object_get_data(G_OBJECT(widget), "toolbar_add_name"));
	g_free(g_object_get_data(G_OBJECT(widget), "toolbar_add_label"));
	g_free(g_object_get_data(G_OBJECT(widget), "toolbar_add_stock_id"));
}

static void toolbarlist_add_button(const gchar *name, const gchar *label,
									const gchar *stock_id, GtkBox *box)
{
	ToolbarButtonData *toolbar_entry;
	GtkWidget *hbox;

	toolbar_entry = g_new(ToolbarButtonData,1);
	toolbar_entry->button = gtk_button_new();
	gtk_button_set_relief(GTK_BUTTON(toolbar_entry->button), GTK_RELIEF_NONE);
	gtk_box_pack_start(GTK_BOX(box), toolbar_entry->button, FALSE, FALSE, 0);
	gtk_widget_show(toolbar_entry->button);

	g_object_set_data_full(G_OBJECT(toolbar_entry->button), "toolbarbuttondata",
	toolbar_entry, (GDestroyNotify)toolbar_item_free);

	hbox = gtk_hbox_new(FALSE, PREF_PAD_BUTTON_GAP);
	gtk_container_add(GTK_CONTAINER(toolbar_entry->button), hbox);
	gtk_widget_show(hbox);

	toolbar_entry->button_label = gtk_label_new(label);
	toolbar_entry->name = g_strdup(name);
	toolbar_entry->stock_id = g_strdup(stock_id);
	g_signal_connect(G_OBJECT(toolbar_entry->button), "button_release_event",
									G_CALLBACK(toolbar_press_cb), toolbar_entry);

	if (toolbar_entry->stock_id)
		{
		GdkPixbuf *pixbuf;
		gchar *iconl;
		iconl = path_from_utf8(toolbar_entry->stock_id);
		pixbuf = gdk_pixbuf_new_from_file(iconl, NULL);
		g_free(iconl);
		if (pixbuf)
			{
			GdkPixbuf *scaled;
			gint w, h;

			w = h = 16;
			gtk_icon_size_lookup(GTK_ICON_SIZE_BUTTON, &w, &h);

			scaled = gdk_pixbuf_scale_simple(pixbuf, w, h,
							 GDK_INTERP_BILINEAR);
			toolbar_entry->image = gtk_image_new_from_pixbuf(scaled);

			g_object_unref(scaled);
			g_object_unref(pixbuf);
			}
		else
			{
			toolbar_entry->image = gtk_image_new_from_stock(toolbar_entry->stock_id,
														GTK_ICON_SIZE_BUTTON);
			}
		}
	else
		{
		toolbar_entry->image = gtk_image_new_from_stock(GTK_STOCK_JUMP_TO,
														GTK_ICON_SIZE_BUTTON);
		}
	gtk_box_pack_start(GTK_BOX(hbox), toolbar_entry->image, FALSE, FALSE, 0);
	gtk_widget_show(toolbar_entry->image);
	gtk_box_pack_start(GTK_BOX(hbox), toolbar_entry->button_label, FALSE, FALSE, 0);
	gtk_widget_show(toolbar_entry->button_label);
}

static void toolbarlist_add_cb(GtkWidget *widget, gpointer data)
{
	const gchar *name = g_object_get_data(G_OBJECT(widget), "toolbar_add_name");
	const gchar *label = g_object_get_data(G_OBJECT(widget), "toolbar_add_label");
	const gchar *stock_id = g_object_get_data(G_OBJECT(widget), "toolbar_add_stock_id");
	ToolbarData *tbbd = data;

	toolbarlist_add_button(name, label, stock_id, GTK_BOX(tbbd->vbox));
}

static void get_desktop_data(const gchar *name, gchar **label, gchar **stock_id)
{
	GList *editors_list;
	GList *work;
	*label = NULL;
	*stock_id = NULL;

	editors_list = editor_list_get();
	work = editors_list;
	while (work)
		{
		const EditorDescription *editor = work->data;

		if (g_strcmp0(name, editor->key) == 0)
			{
			*label = g_strdup(editor->name);
			*stock_id = g_strconcat(editor->icon, ".desktop", NULL);
			break;
			}
		work = work->next;
		}
	g_list_free(editors_list);
}

static void toolbar_menu_add_popup(GtkWidget *widget, gpointer data)
{
	GtkWidget *menu;
	GList *editors_list;
	GList *work;
	ToolbarData *toolbarlist = data;
	const UseableToolbarItems *list = useable_toolbar_items;

	menu = popup_menu_short_lived();

	/* get standard menu item data */
	while (list->name)
		{
		GtkWidget *item;
		item = menu_item_add_stock(menu, list->label, list->stock_id,
										G_CALLBACK(toolbarlist_add_cb), toolbarlist);
		g_object_set_data(G_OBJECT(item), "toolbar_add_name", g_strdup(list->name));
		g_object_set_data(G_OBJECT(item), "toolbar_add_label", g_strdup(list->label));
		g_object_set_data(G_OBJECT(item), "toolbar_add_stock_id", g_strdup(list->stock_id));
		g_signal_connect(G_OBJECT(item), "destroy", G_CALLBACK(toolbar_button_free), item);
		list++;
		}

	/* get desktop file data */
	editors_list = editor_list_get();
	work = editors_list;
	while (work)
		{
		const EditorDescription *editor = work->data;

		GtkWidget *item;
		gchar *icon = g_strconcat(editor->icon, ".desktop", NULL);

		item = menu_item_add_stock(menu, editor->name, icon,
										G_CALLBACK(toolbarlist_add_cb), toolbarlist);
		g_object_set_data(G_OBJECT(item), "toolbar_add_name", g_strdup(editor->key));
		g_object_set_data(G_OBJECT(item), "toolbar_add_label", g_strdup(editor->name));
		g_object_set_data(G_OBJECT(item), "toolbar_add_stock_id", icon);
		g_signal_connect(G_OBJECT(item), "destroy", G_CALLBACK(toolbar_button_free), item);
		work = work->next;
		}
	g_list_free(editors_list);

	gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, widget, 0, GDK_CURRENT_TIME);
}

static gboolean toolbar_menu_add_cb(GtkWidget *widget, gpointer data)
{
	ToolbarData *toolbarlist = data;

	toolbar_menu_add_popup(widget, toolbarlist);
	return TRUE;
}

/**
 * @brief For each layoutwindow, clear toolbar and reload with current selection
 * 
 */
void toolbar_apply()
{
	LayoutWindow *lw;
	GList *work_windows;
	GList *work_toolbar;

	work_windows = layout_window_list;
	while (work_windows)
		{
		lw = work_windows->data;

		layout_toolbar_clear(lw, TOOLBAR_MAIN);

		work_toolbar = gtk_container_get_children(GTK_CONTAINER(toolbarlist->vbox));
		while (work_toolbar)
			{
			GtkButton *button = work_toolbar->data;
			ToolbarButtonData *tbbd;

			tbbd = g_object_get_data(G_OBJECT(button),"toolbarbuttondata");
			layout_toolbar_add(lw, TOOLBAR_MAIN, tbbd->name);

			work_toolbar = work_toolbar->next;
			}
		g_list_free(work_toolbar);

		work_windows = work_windows->next;
		}

}

/**
 * @brief Load the current toolbar items into the vbox
 * @param lw 
 * @param box The vbox displayed in the preferences Toolbar tab
 * 
 * Get the current contents of the toolbar, both menu items
 * and desktop items, and load them into the vbox
 */
static void toolbarlist_populate(LayoutWindow *lw, GtkBox *box)
{
	GList *work = g_list_first(lw->toolbar_actions[TOOLBAR_MAIN]);

	while (work)
		{
		gchar *name = work->data;
		gchar *label;
		gchar *icon;
		work = work->next;

		if (file_extension_match(name, ".desktop"))
			{
			get_desktop_data(name, &label, &icon);
			}
		else
			{
			get_toolbar_item(name, &label, &icon);
			}
		toolbarlist_add_button(name, label, icon, box);
		}
}

GtkWidget *toolbar_select_new(LayoutWindow *lw)
{
	GtkWidget *scrolled;
	GtkWidget *tbar;
	GtkWidget *add_box;

	if (!lw) return NULL;

	if (!toolbarlist)
		{
		toolbarlist = g_new0(ToolbarData, 1);
		}
	toolbarlist->lw = lw;

	toolbarlist->widget = gtk_vbox_new(FALSE, PREF_PAD_GAP);
	gtk_widget_show(toolbarlist->widget);

	scrolled = gtk_scrolled_window_new(NULL, NULL);
	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled),
							GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
	gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled), GTK_SHADOW_NONE);
	gtk_box_pack_start(GTK_BOX(toolbarlist->widget), scrolled, TRUE, TRUE, 0);
	gtk_widget_show(scrolled);

	toolbarlist->vbox = gtk_vbox_new(FALSE, 0);
	gtk_widget_show(toolbarlist->vbox);
	gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(scrolled), toolbarlist->vbox);
	gtk_viewport_set_shadow_type(GTK_VIEWPORT(gtk_bin_get_child(GTK_BIN(scrolled))),
																GTK_SHADOW_NONE);

	add_box = gtk_vbox_new(FALSE, 0);
	gtk_widget_show(add_box);
	gtk_box_pack_end(GTK_BOX(toolbarlist->widget), add_box, FALSE, FALSE, 0);
	tbar = pref_toolbar_new(add_box, GTK_TOOLBAR_ICONS);
	toolbarlist->add_button = pref_toolbar_button(tbar, GTK_STOCK_ADD, "NULL", FALSE,
											_("Add Toolbar Item"),
											G_CALLBACK(toolbar_menu_add_cb), toolbarlist);
	gtk_widget_show(toolbarlist->add_button);

	toolbarlist_populate(lw,GTK_BOX(toolbarlist->vbox));

	return toolbarlist->widget;
}

/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */