@qooxdoo/framework/source/class/qx/ui/virtual/layer/HtmlCell.js

The JS Framework for Coders

/* ************************************************************************

   qooxdoo - the new era of web development

   http://qooxdoo.org

   Copyright:
     2004-2009 1&1 Internet AG, Germany, http://www.1und1.de

   License:
     MIT: https://opensource.org/licenses/MIT
     See the LICENSE file in the project's top-level directory for details.

   Authors:
     * Fabian Jakobs (fjakobs)
     * Jonathan Weiß (jonathan_rass)

************************************************************************ */

/**
 * The HtmlCell layer renders each cell with custom HTML markup. The concrete
 * markup for each cell is provided by a cell provider.
 */
qx.Class.define("qx.ui.virtual.layer.HtmlCell", {
  extend: qx.ui.virtual.layer.Abstract,

  /**
   * @param htmlCellProvider {qx.ui.virtual.core.IHtmlCellProvider} This class
   *    provides the HTML markup for each cell.
   */
  construct(htmlCellProvider) {
    super();
    this.setZIndex(12);

    if (qx.core.Environment.get("qx.debug")) {
      this.assertInterface(
        htmlCellProvider,
        qx.ui.virtual.core.IHtmlCellProvider
      );
    }
    this._cellProvider = htmlCellProvider;
  },

  /*
  *****************************************************************************
     MEMBERS
  *****************************************************************************
  */

  members: {
    /**
     * Get the cell size taking the box model into account
     *
     * @param width {Integer} The cell's (border-box) width in pixel
     * @param height {Integer} The cell's (border-box) height in pixel
     * @param insetX {Integer} The cell's horizontal insets, i.e. the sum of
     *    horizontal paddings and borders
     * @param insetY {Integer} The cell's vertical insets, i.e. the sum of
     *    vertical paddings and borders
     * @return {String} The CSS style string for the cell size
     */
    _getCellSizeStyle(width, height, insetX, insetY) {
      var style = "";
      if (qx.core.Environment.get("css.boxmodel") == "content") {
        width -= insetX;
        height -= insetY;
      }

      style += "width:" + width + "px;";
      style += "height:" + height + "px;";

      return style;
    },

    // overridden
    _fullUpdate(firstRow, firstColumn, rowSizes, columnSizes) {
      var html = [];
      var left = 0;
      var top = 0;
      var row = firstRow;
      var column = firstColumn;
      for (var y = 0; y < rowSizes.length; y++) {
        var left = 0;
        var column = firstColumn;
        var height = rowSizes[y];
        for (var x = 0; x < columnSizes.length; x++) {
          var width = columnSizes[x];
          var cellProperties = this._cellProvider.getCellProperties(
            row,
            column
          );

          var insets = cellProperties.insets || [0, 0];

          html.push(
            "<div ",
            "style='",
            "left:",
            left,
            "px;",
            "top:",
            top,
            "px;",
            this._getCellSizeStyle(width, height, insets[0], insets[1]),
            cellProperties.style || "",
            "' ",
            "class='",
            cellProperties.classes || "",
            "' ",
            cellProperties.attributes || "",
            ">",
            cellProperties.content || "",
            "</div>"
          );

          column++;
          left += width;
        }
        top += height;
        row++;
      }

      this.getContentElement().setAttribute("html", html.join(""));
    }
  },

  /*
  *****************************************************************************
     DESTRUCTOR
  *****************************************************************************
  */

  destruct() {
    this._cellProvider = null;
  }
});