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