devextreme/ui/tree_list/ui.tree_list.rows.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (ui/tree_list/ui.tree_list.rows.js)
 * Version: 18.1.3
 * Build date: Tue May 15 2018
 *
 * Copyright (c) 2012 - 2018 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
"use strict";
var $ = require("../../core/renderer"),
    treeListCore = require("./ui.tree_list.core"),
    rowsViewModule = require("../grid_core/ui.grid_core.rows");
var TREELIST_TEXT_CONTENT = "dx-treelist-text-content",
    TREELIST_EXPAND_ICON_CONTAINER_CLASS = "dx-treelist-icon-container",
    TREELIST_CELL_EXPANDABLE_CLASS = "dx-treelist-cell-expandable",
    TREELIST_EMPTY_SPACE = "dx-treelist-empty-space",
    TREELIST_EXPANDED_CLASS = "dx-treelist-expanded",
    TREELIST_COLLAPSED_CLASS = "dx-treelist-collapsed";
exports.RowsView = rowsViewModule.views.rowsView.inherit(function() {
    var createCellContent = function($container) {
        return $("<div>").addClass(TREELIST_TEXT_CONTENT).appendTo($container)
    };
    var createIcon = function(hasIcon, isExpanded) {
        var $iconElement = $("<div>").addClass(TREELIST_EMPTY_SPACE);
        if (hasIcon) {
            $iconElement.toggleClass(TREELIST_EXPANDED_CLASS, isExpanded).toggleClass(TREELIST_COLLAPSED_CLASS, !isExpanded).append($("<span>"))
        }
        return $iconElement
    };
    return {
        _renderExpandIcon: function($container, options) {
            var level = options.row.level,
                $iconContainer = $("<div>").addClass(TREELIST_EXPAND_ICON_CONTAINER_CLASS).appendTo($container);
            for (var i = 0; i <= level; i++) {
                $iconContainer.append(createIcon(i === level && options.row.node.hasChildren, options.row.isExpanded))
            }
            $container.addClass(TREELIST_CELL_EXPANDABLE_CLASS);
            return $iconContainer
        },
        _renderCellCommandContent: function(container, model) {
            this._renderExpandIcon(container, model);
            return true
        },
        _processTemplate: function(template, options) {
            var resultTemplate, that = this,
                renderingTemplate = this.callBase(template);
            var firstDataColumnIndex = that._columnsController.getFirstDataColumnIndex();
            if (renderingTemplate && options.column.index === firstDataColumnIndex) {
                resultTemplate = {
                    render: function(options) {
                        var $container = options.container;
                        if (that._renderCellCommandContent($container, options.model)) {
                            options.container = createCellContent($container)
                        }
                        renderingTemplate.render(options)
                    }
                }
            } else {
                resultTemplate = renderingTemplate
            }
            return resultTemplate
        },
        _updateCell: function($cell, options) {
            $cell = $cell.hasClass(TREELIST_TEXT_CONTENT) ? $cell.parent() : $cell;
            this.callBase($cell, options)
        },
        _rowClick: function(e) {
            var dataController = this._dataController,
                $targetElement = $(e.event.target),
                isExpandIcon = this.isExpandIcon($targetElement),
                item = dataController && dataController.items()[e.rowIndex];
            if (isExpandIcon && item) {
                dataController.changeRowExpand(item.key)
            }
            this.callBase(e)
        },
        _createRow: function(row) {
            var node = row && row.node,
                $rowElement = this.callBase.apply(this, arguments);
            if (node) {
                this.setAria("level", row.level, $rowElement);
                if (node.hasChildren) {
                    this.setAria("expanded", row.isExpanded, $rowElement)
                }
            }
            return $rowElement
        },
        isExpandIcon: function($targetElement) {
            return !!$targetElement.closest("." + TREELIST_EXPANDED_CLASS + ", ." + TREELIST_COLLAPSED_CLASS).length
        }
    }
}());
treeListCore.registerModule("rows", {
    defaultOptions: rowsViewModule.defaultOptions,
    views: {
        rowsView: exports.RowsView
    }
});