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