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Filename : bubble.js
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import extend from 'extend';
import Emitter from '../core/emitter';
import Keyboard from '../modules/keyboard';
import BaseTheme, { BaseTooltip } from './base';
import icons from '../ui/icons';
import { Range } from '../core/selection';


const TOOLBAR_CONFIG = [
  ['bold', 'italic', 'link'],
  [{ header: 1 }, { header: 2 }, 'blockquote']
];

class BubbleTheme extends BaseTheme {
  constructor(quill, options) {
    if (options.modules.toolbar != null && options.modules.toolbar.container == null) {
      options.modules.toolbar.container = TOOLBAR_CONFIG;
    }
    super(quill, options);
    this.quill.container.classList.add('ql-bubble');
  }

  extendToolbar(toolbar) {
    this.tooltip = new BubbleTooltip(this.quill, this.options.bounds);
    this.tooltip.root.appendChild(toolbar.container);
    this.buildButtons([].slice.call(toolbar.container.querySelectorAll('button')));
    this.buildPickers([].slice.call(toolbar.container.querySelectorAll('select')));
  }
}
BubbleTheme.DEFAULTS = extend(true, {}, BaseTheme.DEFAULTS, {
  modules: {
    toolbar: {
      handlers: {
        link: function(value) {
          if (!value) {
            this.quill.format('link', false);
          } else {
            this.quill.theme.tooltip.edit();
          }
        }
      }
    }
  }
});


class BubbleTooltip extends BaseTooltip {
  constructor(quill, bounds) {
    super(quill, bounds);
    this.quill.on(Emitter.events.EDITOR_CHANGE, (type, range) => {
      if (type !== Emitter.events.SELECTION_CHANGE) return;
      if (range != null && range.length > 0) {
        this.show();
        // Lock our width so we will expand beyond our offsetParent boundaries
        this.root.style.left = '0px';
        this.root.style.width = '';
        this.root.style.width = this.root.offsetWidth + 'px';
        let lines = this.quill.scroll.lines(range.index, range.length);
        if (lines.length === 1) {
          this.position(this.quill.getBounds(range));
        } else {
          let lastLine = lines[lines.length - 1];
          let index = lastLine.offset(this.quill.scroll);
          let length = Math.min(lastLine.length() - 1, range.index + range.length - index);
          let bounds = this.quill.getBounds(new Range(index, length));
          this.position(bounds);
        }
      } else if (document.activeElement !== this.textbox && this.quill.hasFocus()) {
        this.hide();
      }
    });
  }

  listen() {
    super.listen();
    this.root.querySelector('.ql-close').addEventListener('click', (event) => {
      this.root.classList.remove('ql-editing');
    });
    this.quill.on(Emitter.events.SCROLL_OPTIMIZE, () => {
      // Let selection be restored by toolbar handlers before repositioning
      setTimeout(() => {
        if (this.root.classList.contains('ql-hidden')) return;
        let range = this.quill.getSelection();
        if (range != null) {
          this.position(this.quill.getBounds(range));
        }
      }, 1);
    });
  }

  cancel() {
    this.show();
  }

  position(reference) {
    let shift = super.position(reference);
    if (shift === 0) return shift;
    let arrow = this.root.querySelector('.ql-tooltip-arrow');
    arrow.style.marginLeft = '';
    arrow.style.marginLeft = (-1*shift - arrow.offsetWidth/2) + 'px';
  }
}
BubbleTooltip.TEMPLATE = [
  '<span class="ql-tooltip-arrow"></span>',
  '<div class="ql-tooltip-editor">',
    '<input type="text" data-formula="e=mc^2" data-link="quilljs.com" data-video="Embed URL">',
    '<a class="ql-close"></a>',
  '</div>'
].join('');


export default BubbleTheme;