path: root/navit/gui/internal/gui_internal_html.c

#include <glib.h>
#include <stdlib.h>
#include <ctype.h>
#include "callback.h"
#include "debug.h"
#include "coord.h"
#include "point.h"
#include "color.h"
#include "graphics.h"
#include "xmlconfig.h"
#include "navit_nls.h"
#include "gui.h"
#include "command.h"
struct gui_priv;
#include "gui_internal.h"
#include "gui_internal_widget.h"
#include "gui_internal_priv.h"
#include "gui_internal_html.h"
#include "gui_internal_keyboard.h"
#include "gui_internal_menu.h"



struct form {
	char *onsubmit;
};

struct html_tag_map {
	char *tag_name;
	enum html_tag tag;
} html_tag_map[] = {
	{"a",html_tag_a},
	{"h1",html_tag_h1},
	{"html",html_tag_html},
	{"img",html_tag_img},
	{"script",html_tag_script},
	{"form",html_tag_form},
	{"input",html_tag_input},
	{"div",html_tag_div},
};


static const char *
find_attr(const char **names, const char **values, const char *name)
{
	while (*names) {
		if (!g_ascii_strcasecmp(*names, name))
			return *values;
		names+=XML_ATTR_DISTANCE;
		values+=XML_ATTR_DISTANCE;
	}
	return NULL;
}

static char *
find_attr_dup(const char **names, const char **values, const char *name)
{
	return g_strdup(find_attr(names, values, name));
}

void
gui_internal_html_main_menu(struct gui_priv *this)
{
	gui_internal_prune_menu(this, NULL);
	gui_internal_html_load_href(this, "#Main Menu", 0);
}

static void
gui_internal_html_command(struct gui_priv *this, struct widget *w, void *data)
{
	gui_internal_evaluate(this,w->command);
}

static void
gui_internal_html_submit_set(struct gui_priv *this, struct widget *w, struct form *form)
{
	GList *l;
	if (w->form == form && w->name) {
		struct attr *attr=attr_new_from_text(w->name, w->text?w->text:"");
		if (attr)
			gui_set_attr(this->self.u.gui, attr);
		attr_free(attr);
	}
	l=w->children;
	while (l) {
		w=l->data;
		gui_internal_html_submit_set(this, w, form);
		l=g_list_next(l);
	}

}

static void
gui_internal_html_submit(struct gui_priv *this, struct widget *w, void *data)
{
	struct widget *menu;
	GList *l;

	dbg(lvl_debug,"enter form %p %s",w->form,w->form->onsubmit);
	l=g_list_last(this->root.children);
	menu=l->data;
	graphics_draw_mode(this->gra, draw_mode_begin);
	gui_internal_highlight_do(this, NULL);
	gui_internal_menu_render(this);
	graphics_draw_mode(this->gra, draw_mode_end);
	gui_internal_html_submit_set(this, menu, w->form);
	gui_internal_evaluate(this,w->form->onsubmit);
}

void
gui_internal_html_load_href(struct gui_priv *this, char *href, int replace)
{
	if (replace)
		gui_internal_prune_menu_count(this, 1, 0);
	if (href && href[0] == '#') {
		dbg(lvl_debug,"href=%s",href);
		g_free(this->href);
		this->href=g_strdup(href);
		gui_internal_html_menu(this, this->html_text, href+1);
	}
}

void
gui_internal_html_href(struct gui_priv *this, struct widget *w, void *data)
{
	gui_internal_html_load_href(this, w->command, 0);
}

struct div_flags_map {
	char *attr;
	char *val;
	enum flags flags;
} div_flags_map[] = {
	{"gravity","none",gravity_none},
	{"gravity","left",gravity_left},
	{"gravity","xcenter",gravity_xcenter},
	{"gravity","right",gravity_right},
	{"gravity","top",gravity_top},
	{"gravity","ycenter",gravity_ycenter},
	{"gravity","bottom",gravity_bottom},
	{"gravity","left_top",gravity_left_top},
	{"gravity","top_center",gravity_top_center},
	{"gravity","right_top",gravity_right_top},
	{"gravity","left_center",gravity_left_center},
	{"gravity","center",gravity_center},
	{"gravity","right_center",gravity_right_center},
	{"gravity","left_bottom",gravity_left_bottom},
	{"gravity","bottom_center",gravity_bottom_center},
	{"gravity","right_bottom",gravity_right_bottom},
	{"expand","1",flags_expand},
	{"fill","1",flags_fill},
	{"orientation","horizontal",orientation_horizontal},
	{"orientation","vertical",orientation_vertical},
	{"orientation","horizontal_vertical",orientation_horizontal_vertical},
};

static enum flags
div_flag(const char **names, const char **values, char *name)
{
	int i;
	enum flags ret=0;
	const char *value=find_attr(names, values, name);
	if (!value)
		return ret;
	for (i = 0 ; i < sizeof(div_flags_map)/sizeof(struct div_flags_map); i++) {
		if (!strcmp(div_flags_map[i].attr,name) && !strcmp(div_flags_map[i].val,value))
			ret|=div_flags_map[i].flags;
	}
	return ret;
}

static enum flags
div_flags(const char **names, const char **values)
{
	enum flags flags;
	flags = div_flag(names, values, "gravity");
	flags |= div_flag(names, values, "orientation");
	flags |= div_flag(names, values, "expand");
	flags |= div_flag(names, values, "fill");
	return flags;
}

static struct widget *
html_image(struct gui_priv *this, const char **names, const char **values)
{
	const char *src, *size;
	struct graphics_image *img=NULL;

	src=find_attr(names, values, "src");
	if (!src)
		return NULL;
	size=find_attr(names, values, "size");
	if (!size) {
		const char *class=find_attr(names, values, "class");
		if (class && !strcasecmp(class,"centry"))
			size="xs";
		else
			size="l";
	}
	if (!strcmp(size,"l"))
		img=image_new_l(this, src);
	else if (!strcmp(size,"s"))
		img=image_new_s(this, src);
	else if (!strcmp(size,"xs"))
		img=image_new_xs(this, src);
	if (!img)
		return NULL;
	return gui_internal_image_new(this, img);
}

static void
gui_internal_html_start(xml_context *dummy, const char *tag_name, const char **names, const char **values, void *data, GError **error)
{
	struct gui_priv *this=data;
	int i;
	enum html_tag tag=html_tag_none;
	struct html *html=&this->html[this->html_depth];
	const char *cond, *type, *font_size;

	if (!g_ascii_strcasecmp(tag_name,"text") || !g_ascii_strcasecmp(tag_name,"p"))
		return;
	html->skip=0;
	html->command=NULL;
	html->name=NULL;
	html->href=NULL;
	html->refresh_cond=NULL;
	html->w=NULL;
	html->container=NULL;
	html->font_size=0;
	cond=find_attr(names, values, "cond");

	if (cond && !this->html_skip) {
		if (!command_evaluate_to_boolean(&this->self, cond, NULL))
			html->skip=1;
	}

	for (i=0 ; i < sizeof(html_tag_map)/sizeof(struct html_tag_map); i++) {
		if (!g_ascii_strcasecmp(html_tag_map[i].tag_name, tag_name)) {
			tag=html_tag_map[i].tag;
			break;
		}
	}
	html->tag=tag;
	html->class=find_attr_dup(names, values, "class");
	if (!this->html_skip && !html->skip) {
		switch (tag) {
		case html_tag_a:
			html->name=find_attr_dup(names, values, "name");
			if (html->name) {
				html->skip=this->html_anchor ? strcmp(html->name,this->html_anchor) : 0;
				if (!html->skip)
					this->html_anchor_found=1;
			}
			html->command=find_attr_dup(names, values, "onclick");
			html->href=find_attr_dup(names, values, "href");
			html->refresh_cond=find_attr_dup(names, values, "refresh_cond");
			break;
		case html_tag_img:
			html->command=find_attr_dup(names, values, "onclick");
			html->w=html_image(this, names, values);
			break;
		case html_tag_form:
			this->form=g_new0(struct form, 1);
			this->form->onsubmit=find_attr_dup(names, values, "onsubmit");
			break;
		case html_tag_input:
			type=find_attr_dup(names, values, "type");
			if (!type)
				break;
			if (!strcmp(type,"image")) {
				html->w=html_image(this, names, values);
				if (html->w) {
					html->w->state|=STATE_SENSITIVE;
					html->w->func=gui_internal_html_submit;
				}
			}
			if (!strcmp(type,"text") || !strcmp(type,"password")) {
				const char *value=find_attr(names, values, "value");
				html->w=gui_internal_label_new(this, value);
				html->w->background=this->background;
			        html->w->flags |= div_flags(names, values);
				html->w->state|=STATE_EDITABLE;
				if (!this->editable) {
					this->editable=html->w;
					html->w->state|=STATE_EDIT;
				}
				this->keyboard_required=1;
				if (!strcmp(type,"password"))
					html->w->flags2 |= 1;
			}
			if (html->w) {
				html->w->form=this->form;
				html->w->name=find_attr_dup(names, values, "name");
			}
			break;
		case html_tag_div:
			html->w=gui_internal_box_new(this, div_flags(names, values));
			font_size=find_attr(names, values, "font");
			if (font_size)
				html->font_size=atoi(font_size);
			html->container=this->html_container;
			this->html_container=html->w;
			break;
		default:
			break;
		}
	}
	this->html_skip+=html->skip;
	this->html_depth++;
}

static void
gui_internal_html_end(xml_context *dummy, const char *tag_name, void *data, GError **error)
{
	struct gui_priv *this=data;
	struct html *html;
	struct html *parent=NULL;

	if (!g_ascii_strcasecmp(tag_name,"text") || !g_ascii_strcasecmp(tag_name,"p"))
		return;
	this->html_depth--;
	html=&this->html[this->html_depth];
	if (this->html_depth > 0)
		parent=&this->html[this->html_depth-1];


	if (!this->html_skip) {
		if (html->command && html->w) {
			html->w->state |= STATE_SENSITIVE;
			html->w->command=html->command;
			html->w->func=gui_internal_html_command;
			html->command=NULL;
		}
		if (parent && (parent->href || parent->command) && html->w) {
			html->w->state |= STATE_SENSITIVE;
			if (parent->command) {
				html->w->command=g_strdup(parent->command);
				html->w->func=gui_internal_html_command;
			} else {
				html->w->command=g_strdup(parent->href);
				html->w->func=gui_internal_html_href;
			}
		}
		switch (html->tag) {
		case html_tag_div:
			this->html_container=html->container;
		case html_tag_img:
		case html_tag_input:
			gui_internal_widget_append(this->html_container, html->w);
			break;
		case html_tag_form:
			this->form=NULL;
			break;
		default:
			break;
		}
	}
	this->html_skip-=html->skip;
	g_free(html->command);
	g_free(html->name);
	g_free(html->href);
	g_free(html->class);
	g_free(html->refresh_cond);
}

static void
gui_internal_refresh_callback_called(struct gui_priv *this, struct menu_data *menu_data)
{
	if (gui_internal_menu_data(this) == menu_data) {
		char *href=g_strdup(menu_data->href);
		gui_internal_html_load_href(this, href, 1);
		g_free(href);
	}
}

static void
gui_internal_set_refresh_callback(struct gui_priv *this, char *cond)
{
	dbg(lvl_info,"cond=%s",cond);
	if (cond) {
		enum attr_type type;
		struct object_func *func;
		struct menu_data *menu_data=gui_internal_menu_data(this);
		dbg(lvl_info,"navit=%p",this->nav);
		type=command_evaluate_to_attr(&this->self, cond, NULL, &menu_data->refresh_callback_obj);
		if (type == attr_none) {
			dbg(lvl_error,"can't get type of '%s'",cond);
			return;
		}	
		func=object_func_lookup(menu_data->refresh_callback_obj.type);
		if (!func)
			dbg(lvl_error,"'%s' has no functions",cond);
		if (func && !func->add_attr)
			dbg(lvl_error,"'%s' has no add_attr function",cond);
		if (!func || !func->add_attr)
			return;
		menu_data->refresh_callback.type=attr_callback;
		menu_data->refresh_callback.u.callback=callback_new_attr_2(callback_cast(gui_internal_refresh_callback_called),type,this,menu_data);
		func->add_attr(menu_data->refresh_callback_obj.u.data, &menu_data->refresh_callback);
	}
}

static void
gui_internal_html_text(xml_context *dummy, const char *text, gsize len, void *data, GError **error)
{
	struct gui_priv *this=data;
	struct widget *w;
	int depth=this->html_depth-1;
	struct html *html=&this->html[depth];
	gchar *text_stripped;

	if (this->html_skip)
		return;
	while (isspace(text[0])) {
		text++;
		len--;
	}
	while (len > 0 && isspace(text[len-1]))
		len--;

	text_stripped = g_strndup(text, len);
	if (html->tag == html_tag_html && depth > 2) {
		if (this->html[depth-1].tag == html_tag_script) {
			html=&this->html[depth-2];
		}
	}
	switch (html->tag) {
	case html_tag_a:
		if (html->name && len) {
			if (html->class && !strcasecmp(html->class,"clist"))
				this->html_container=gui_internal_box_new(this, gravity_left_top|orientation_vertical|flags_expand|flags_fill /* |flags_scrolly */);
			else
				this->html_container=gui_internal_box_new(this, gravity_center|orientation_horizontal_vertical|flags_expand|flags_fill);
			gui_internal_widget_append(gui_internal_menu(this, _(text_stripped)), this->html_container);
			gui_internal_menu_data(this)->href=g_strdup(this->href);
			gui_internal_set_refresh_callback(this, html->refresh_cond);
			this->html_container->spx=this->spacing*10;
		}
		break;
	case html_tag_h1:
		if (!this->html_container) {
			this->html_container=gui_internal_box_new(this, gravity_center|orientation_horizontal_vertical|flags_expand|flags_fill);
			gui_internal_widget_append(gui_internal_menu(this, _(text_stripped)), this->html_container);
			this->html_container->spx=this->spacing*10;
		}
		break;
	case html_tag_img:
		if (len) {
			if (html->class && !strcasecmp(html->class, "centry"))
				w=gui_internal_box_new(this, gravity_left_top|orientation_horizontal|flags_fill);
			else
				w=gui_internal_box_new(this, gravity_center|orientation_vertical);
			gui_internal_widget_append(w, html->w);
			gui_internal_widget_append(w, gui_internal_text_new(this, _(text_stripped), gravity_left_top|orientation_vertical|flags_fill));
			html->w=w;
		}
		break;
	case html_tag_div:
		if (len) {
			gui_internal_widget_append(html->w, gui_internal_text_font_new(this, _(text_stripped), html->font_size, gravity_center|orientation_vertical));
		}
		break;
	case html_tag_script:
		dbg(lvl_debug,"execute %s",text_stripped);
		gui_internal_evaluate(this,text_stripped);
		break;
	default:
		break;
	}
	g_free(text_stripped);
}

void
gui_internal_html_parse_text(struct gui_priv *this, char *doc)
{
	xml_parse_text(doc, this, gui_internal_html_start, gui_internal_html_end, gui_internal_html_text);
}

void
gui_internal_html_menu(struct gui_priv *this, const char *document, char *anchor)
{
	char *doc=g_strdup(document);
	graphics_draw_mode(this->gra, draw_mode_begin);
	this->html_container=NULL;
	this->html_depth=0;
	this->html_anchor=anchor;
	this->html_anchor_found=0;
	this->form=NULL;
	this->keyboard_required=0;
	this->editable=NULL;
	callback_list_call_attr_2(this->cbl,attr_gui,anchor,&doc);
	gui_internal_html_parse_text(this, doc);
	g_free(doc);
	if (this->keyboard_required) {
		this->html_container->flags=gravity_center|orientation_vertical|flags_expand|flags_fill;
		if (this->keyboard)
			gui_internal_widget_append(this->html_container, gui_internal_keyboard(this, VKBD_FLAG_2 | gui_internal_keyboard_init_mode(getenv("LANG"))));
		else
			gui_internal_keyboard_show_native(this, this->html_container, VKBD_FLAG_2 | gui_internal_keyboard_init_mode(getenv("LANG")), getenv("LANG"));
	}
	gui_internal_menu_render(this);
	graphics_draw_mode(this->gra, draw_mode_end);
}