/* globals jQuery */
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/**
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* ext-arrows.js
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*
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* @license MIT
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*
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* @copyright 2010 Alexis Deveria
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*
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*/
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export default {
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name: 'arrows',
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async init (S) {
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const strings = await S.importLocale();
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const svgEditor = this;
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const svgCanvas = svgEditor.canvas;
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const $ = jQuery;
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const // {svgcontent} = S,
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addElem = svgCanvas.addSVGElementFromJson,
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{nonce} = S,
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prefix = 'se_arrow_';
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let selElems, arrowprefix, randomizeIds = S.randomize_ids;
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function setArrowNonce (window, n) {
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randomizeIds = true;
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arrowprefix = prefix + n + '_';
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pathdata.fw.id = arrowprefix + 'fw';
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pathdata.bk.id = arrowprefix + 'bk';
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}
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function unsetArrowNonce (window) {
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randomizeIds = false;
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arrowprefix = prefix;
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pathdata.fw.id = arrowprefix + 'fw';
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pathdata.bk.id = arrowprefix + 'bk';
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}
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svgCanvas.bind('setnonce', setArrowNonce);
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svgCanvas.bind('unsetnonce', unsetArrowNonce);
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if (randomizeIds) {
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arrowprefix = prefix + nonce + '_';
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} else {
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arrowprefix = prefix;
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}
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const pathdata = {
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fw: {d: 'm0,0l10,5l-10,5l5,-5l-5,-5z', refx: 8, id: arrowprefix + 'fw'},
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bk: {d: 'm10,0l-10,5l10,5l-5,-5l5,-5z', refx: 2, id: arrowprefix + 'bk'}
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};
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function getLinked (elem, attr) {
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const str = elem.getAttribute(attr);
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if (!str) { return null; }
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const m = str.match(/\(#(.*)\)/);
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if (!m || m.length !== 2) {
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return null;
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}
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return svgCanvas.getElem(m[1]);
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}
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function showPanel (on) {
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$('#arrow_panel').toggle(on);
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if (on) {
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const el = selElems[0];
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const end = el.getAttribute('marker-end');
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const start = el.getAttribute('marker-start');
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const mid = el.getAttribute('marker-mid');
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let val;
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if (end && start) {
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val = 'both';
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} else if (end) {
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val = 'end';
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} else if (start) {
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val = 'start';
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} else if (mid) {
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val = 'mid';
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if (mid.includes('bk')) {
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val = 'mid_bk';
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}
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}
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if (!start && !mid && !end) {
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val = 'none';
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}
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$('#arrow_list').val(val);
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}
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}
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function resetMarker () {
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const el = selElems[0];
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el.removeAttribute('marker-start');
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el.removeAttribute('marker-mid');
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el.removeAttribute('marker-end');
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}
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function addMarker (dir, type, id) {
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// TODO: Make marker (or use?) per arrow type, since refX can be different
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id = id || arrowprefix + dir;
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const data = pathdata[dir];
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if (type === 'mid') {
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data.refx = 5;
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}
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let marker = svgCanvas.getElem(id);
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if (!marker) {
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marker = addElem({
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element: 'marker',
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attr: {
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viewBox: '0 0 10 10',
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id,
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refY: 5,
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markerUnits: 'strokeWidth',
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markerWidth: 5,
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markerHeight: 5,
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orient: 'auto',
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style: 'pointer-events:none' // Currently needed for Opera
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}
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});
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const arrow = addElem({
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element: 'path',
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attr: {
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d: data.d,
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fill: '#000000'
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}
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});
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marker.append(arrow);
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svgCanvas.findDefs().append(marker);
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}
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marker.setAttribute('refX', data.refx);
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return marker;
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}
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function setArrow () {
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resetMarker();
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let type = this.value;
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if (type === 'none') {
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return;
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}
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// Set marker on element
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let dir = 'fw';
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if (type === 'mid_bk') {
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type = 'mid';
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dir = 'bk';
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} else if (type === 'both') {
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addMarker('bk', type);
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svgCanvas.changeSelectedAttribute('marker-start', 'url(#' + pathdata.bk.id + ')');
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type = 'end';
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dir = 'fw';
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} else if (type === 'start') {
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dir = 'bk';
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}
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addMarker(dir, type);
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svgCanvas.changeSelectedAttribute('marker-' + type, 'url(#' + pathdata[dir].id + ')');
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svgCanvas.call('changed', selElems);
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}
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function colorChanged (elem) {
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const color = elem.getAttribute('stroke');
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const mtypes = ['start', 'mid', 'end'];
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const defs = svgCanvas.findDefs();
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$.each(mtypes, function (i, type) {
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const marker = getLinked(elem, 'marker-' + type);
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if (!marker) { return; }
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const curColor = $(marker).children().attr('fill');
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const curD = $(marker).children().attr('d');
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if (curColor === color) { return; }
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const allMarkers = $(defs).find('marker');
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let newMarker = null;
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// Different color, check if already made
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allMarkers.each(function () {
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const attrs = $(this).children().attr(['fill', 'd']);
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if (attrs.fill === color && attrs.d === curD) {
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// Found another marker with this color and this path
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newMarker = this;
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}
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});
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if (!newMarker) {
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// Create a new marker with this color
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const lastId = marker.id;
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const dir = lastId.includes('_fw') ? 'fw' : 'bk';
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newMarker = addMarker(dir, type, arrowprefix + dir + allMarkers.length);
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$(newMarker).children().attr('fill', color);
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}
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$(elem).attr('marker-' + type, 'url(#' + newMarker.id + ')');
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// Check if last marker can be removed
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let remove = true;
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$(S.svgcontent).find('line, polyline, path, polygon').each(function () {
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const elem = this;
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$.each(mtypes, function (j, mtype) {
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if ($(elem).attr('marker-' + mtype) === 'url(#' + marker.id + ')') {
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remove = false;
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return remove;
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}
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});
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if (!remove) { return false; }
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});
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// Not found, so can safely remove
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if (remove) {
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$(marker).remove();
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}
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});
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}
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const contextTools = [
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{
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type: 'select',
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panel: 'arrow_panel',
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id: 'arrow_list',
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defval: 'none',
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events: {
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change: setArrow
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}
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}
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];
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return {
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name: strings.name,
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context_tools: strings.contextTools.map((contextTool, i) => {
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return Object.assign(contextTools[i], contextTool);
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}),
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callback () {
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$('#arrow_panel').hide();
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// Set ID so it can be translated in locale file
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$('#arrow_list option')[0].id = 'connector_no_arrow';
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},
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async addLangData ({lang, importLocale}) {
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const strings = await importLocale();
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return {
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data: strings.langList
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};
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},
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selectedChanged (opts) {
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// Use this to update the current selected elements
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selElems = opts.elems;
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const markerElems = ['line', 'path', 'polyline', 'polygon'];
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let i = selElems.length;
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while (i--) {
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const elem = selElems[i];
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if (elem && markerElems.includes(elem.tagName)) {
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if (opts.selectedElement && !opts.multiselected) {
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showPanel(true);
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} else {
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showPanel(false);
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}
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} else {
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showPanel(false);
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}
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}
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},
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elementChanged (opts) {
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const elem = opts.elems[0];
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if (elem && (
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elem.getAttribute('marker-start') ||
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elem.getAttribute('marker-mid') ||
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elem.getAttribute('marker-end')
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)) {
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// const start = elem.getAttribute('marker-start');
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// const mid = elem.getAttribute('marker-mid');
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// const end = elem.getAttribute('marker-end');
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// Has marker, so see if it should match color
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colorChanged(elem);
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}
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}
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};
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}
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};
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