import {
getStrokedBBoxDefaultVisible
} from './utilities.js';
import * as hstry from './history.js';
const {
InsertElementCommand, BatchCommand
} = hstry;
let pasteContext_ = null;
/**
* @function module:paste-elem.init
* @param {module:paste-elem.pasteContext} pasteContext
* @returns {void}
*/
export const init = function (pasteContext) {
pasteContext_ = pasteContext;
};
/**
* @function module:svgcanvas.SvgCanvas#pasteElements
* @param {"in_place"|"point"|void} type
* @param {Integer|void} x Expected if type is "point"
* @param {Integer|void} y Expected if type is "point"
* @fires module:svgcanvas.SvgCanvas#event:changed
* @fires module:svgcanvas.SvgCanvas#event:ext_IDsUpdated
* @returns {void}
*/
export const pasteElementsMethod = function (type, x, y) {
let clipb = JSON.parse(sessionStorage.getItem(pasteContext_.getClipBoardID()));
if (!clipb) return;
let len = clipb.length;
if (!len) return;
const pasted = [];
const batchCmd = new BatchCommand('Paste elements');
// const drawing = getCurrentDrawing();
/**
* @typedef {PlainObject<string, string>} module:svgcanvas.ChangedIDs
*/
/**
* @type {module:svgcanvas.ChangedIDs}
*/
const changedIDs = {};
// Recursively replace IDs and record the changes
/**
*
* @param {module:svgcanvas.SVGAsJSON} elem
* @returns {void}
*/
function checkIDs (elem) {
if (elem.attr && elem.attr.id) {
changedIDs[elem.attr.id] = pasteContext_.getCanvas().getNextId();
elem.attr.id = changedIDs[elem.attr.id];
}
if (elem.children) elem.children.forEach((child) => checkIDs(child));
}
clipb.forEach((elem) => checkIDs(elem));
// Give extensions like the connector extension a chance to reflect new IDs and remove invalid elements
/**
* Triggered when `pasteElements` is called from a paste action (context menu or key).
* @event module:svgcanvas.SvgCanvas#event:ext_IDsUpdated
* @type {PlainObject}
* @property {module:svgcanvas.SVGAsJSON[]} elems
* @property {module:svgcanvas.ChangedIDs} changes Maps past ID (on attribute) to current ID
*/
pasteContext_.getCanvas().runExtensions(
'IDsUpdated',
/** @type {module:svgcanvas.SvgCanvas#event:ext_IDsUpdated} */
{ elems: clipb, changes: changedIDs },
true
).forEach(function (extChanges) {
if (!extChanges || !('remove' in extChanges)) return;
extChanges.remove.forEach(function (removeID) {
clipb = clipb.filter(function (clipBoardItem) {
return clipBoardItem.attr.id !== removeID;
});
});
});
// Move elements to lastClickPoint
while (len--) {
const elem = clipb[len];
if (!elem) { continue; }
const copy = pasteContext_.getCanvas().addSVGElementFromJson(elem);
pasted.push(copy);
batchCmd.addSubCommand(new InsertElementCommand(copy));
pasteContext_.restoreRefElems(copy);
}
pasteContext_.getCanvas().selectOnly(pasted);
if (type !== 'in_place') {
let ctrX; let ctrY;
if (!type) {
ctrX = pasteContext_.getLastClickPoint('x');
ctrY = pasteContext_.getLastClickPoint('y');
} else if (type === 'point') {
ctrX = x;
ctrY = y;
}
const bbox = getStrokedBBoxDefaultVisible(pasted);
const cx = ctrX - (bbox.x + bbox.width / 2);
const cy = ctrY - (bbox.y + bbox.height / 2);
const dx = [];
const dy = [];
pasted.forEach(function(_item){
dx.push(cx);
dy.push(cy);
});
const cmd = pasteContext_.getCanvas().moveSelectedElements(dx, dy, false);
if (cmd) batchCmd.addSubCommand(cmd);
}
pasteContext_.addCommandToHistory(batchCmd);
pasteContext_.getCanvas().call('changed', pasted);
};