/* globals jQuery, svgEditor */
/*
 * ext-closepath.js
 *
 * Licensed under the MIT License
 *
 * Copyright(c) 2010 Jeff Schiller
 *
 */
// import './pathseg.js';

// This extension adds a simple button to the contextual panel for paths
// The button toggles whether the path is open or closed
svgEditor.addExtension('ClosePath', function () {
  const $ = jQuery;
  let selElems;
  const updateButton = function (path) {
    const seglist = path.pathSegList,
      closed = seglist.getItem(seglist.numberOfItems - 1).pathSegType === 1,
      showbutton = closed ? '#tool_openpath' : '#tool_closepath',
      hidebutton = closed ? '#tool_closepath' : '#tool_openpath';
    $(hidebutton).hide();
    $(showbutton).show();
  };
  const showPanel = function (on) {
    $('#closepath_panel').toggle(on);
    if (on) {
      const path = selElems[0];
      if (path) { updateButton(path); }
    }
  };
  const toggleClosed = function () {
    const path = selElems[0];
    if (path) {
      const seglist = path.pathSegList,
        last = seglist.numberOfItems - 1;
      // is closed
      if (seglist.getItem(last).pathSegType === 1) {
        seglist.removeItem(last);
      } else {
        seglist.appendItem(path.createSVGPathSegClosePath());
      }
      updateButton(path);
    }
  };

  return {
    name: 'ClosePath',
    svgicons: svgEditor.curConfig.extPath + 'closepath_icons.svg',
    buttons: [{
      id: 'tool_openpath',
      type: 'context',
      panel: 'closepath_panel',
      title: 'Open path',
      events: {
        click () {
          toggleClosed();
        }
      }
    },
    {
      id: 'tool_closepath',
      type: 'context',
      panel: 'closepath_panel',
      title: 'Close path',
      events: {
        click () {
          toggleClosed();
        }
      }
    }],
    callback () {
      $('#closepath_panel').hide();
    },
    selectedChanged (opts) {
      selElems = opts.elems;
      let i = selElems.length;
      while (i--) {
        const elem = selElems[i];
        if (elem && elem.tagName === 'path') {
          if (opts.selectedElement && !opts.multiselected) {
            showPanel(true);
          } else {
            showPanel(false);
          }
        } else {
          showPanel(false);
        }
      }
    }
  };
});