EasyUI+Knockout实现经典表单的查看、编辑

/**
* 模块名：easyui方法修改
* 程序名: easyui.fix.js
**/
var easyuifix = {};

/** 
 * for easyloader.js
 * add after row 13 usage: easyuifix.addLoadModules(_1);
 */
easyuifix.easyloader_addLoadModules = function (modules) {
    $.extend(modules, {
        juidatepick: {
            js: rootPath+"/content/js/jquery-plugin/jquery-ui/js/jquery-ui-datepick.min.js",
            css: rootPath+"/content/js/jquery-plugin/jquery-ui/css/jquery-ui.css"
        },
        daterange: {
            js: rootPath+"/content/js/jquery-plugin/daterange/jquery.daterange.js",
            css: rootPath+"/content/js/jquery-plugin/daterange/jquery.daterange.css",
            dependencies: ["juidatepick"]
        },
        lookup: {
            js: rootPath+"/content/js/jquery-plugin/lookup/jquery.lookup.js",
            dependencies: ["combo"]
        },
        autocomplete: {
            js: rootPath+"/content/js/jquery-plugin/autocomplete/jquery.autocomplete.js",
            dependencies: ["combo"]
        }
    });
};

/** 
 *  for easyloader.js
 * add after row 181 usage: easyuifix.easyloader_setting(easyloader, src);
 */
easyuifix.easyloader_setting = function (easyloader,src) {
    easyloader.theme = "default";
    easyloader.locale = "zh_CN";
};

/**
 * for jquery.parser.js
 * add after row 89 usage: easyuifix.parser_addplugins($.parser.plugins);
 */
easyuifix.parser_addplugins = function (plugins) {
    var arr = ["daterange", "lookup", "autocomplete"];
    for (var i in arr) 
        plugins.push(arr[i]);
};

/** 
 * for jquery.tabs.js
 * add after row 415 usage: easyuifix.tabs_showtabonselect(_5d);
 */
easyuifix.tabs_showtabonselect =function(tab){
    tab.show();    //打开时其它页签先隐藏,,提升用户体验，点击时再显示
}

/**
 * for easyui-lang-zh_CN.js
 * add last row: easyuifix.lang_zh_CN();
 */
easyuifix.lang_zh_CN = function () {
    if ($.fn.lookup) {
        $.fn.lookup.defaults.missingMessage = ‘该输入项为必输项‘;
    }
};

/**
 * for jquery.datagrid.js
 * add after row 1137 usage: easyuifix.datagrid_beforeDestroyEditor(_10a, _10b, row);
 * for jquery.easyui.min.js
 * add after row 7622 usage: easyuifix.datagrid_beforeDestroyEditor(_530, _531, row);
 */
easyuifix.datagrid_beforeDestroyEditor = function (jq, rowIndex, row) {
    var opts = $.data(jq, "datagrid").options;
    if (opts.OnBeforeDestroyEditor) {
        var editors = {}, list = $(jq).datagrid(‘getEditors‘, rowIndex) || [];
        $.each(list, function () { editors[this.field] = this; });
        opts.OnBeforeDestroyEditor(editors, row, rowIndex, jq);
    }
};

/**
 * for jquery.datagrid.js 
 * add after row 1101 usage: easyuifix.datagrid_afterCreateEditor(_104, _105, row);
 * for jquery.easyui.min.js
 * add after row 7586 usage: easyuifix.datagrid_afterCreateEditor(_52a, _52b, row);
 */
easyuifix.datagrid_afterCreateEditor = function (jq, rowIndex, row) {
    var opts = $.data(jq, "datagrid").options;
    if (opts.OnAfterCreateEditor) {
        var editors = {}, list = $(jq).datagrid(‘getEditors‘, rowIndex) || [];
        $.each(list, function () { editors[this.field] = this; });
        opts.OnAfterCreateEditor(editors, row, rowIndex, jq);
    }
};

/**
 * for jquery.combo.js to convert disable to readonly
 * add after row 210 usage: easyuifix.combo_disableToReadonly(_32, _33);
 */
easyuifix.combo_disableToReadonly = function (jq, b) {
    var options = $.data(jq, "combo").options;
    var combo = $.data(jq, "combo").combo;
    if (b) {
        options.disabled = true;
        $(jq).attr("readonly", true);
        combo.find(".combo-value").attr("readonly", true).addClass("readonly");
        combo.find(".combo-text").attr("readonly", true).addClass("readonly");
    } else {
        options.disabled = false;
        $(jq).removeAttr("readonly");
        combo.find(".combo-value").removeAttr("readonly").removeClass("readonly");
        combo.find(".combo-text").removeAttr("readonly").removeClass("readonly");
    }
};

/**
 * for jquery.combobox.js to showblank
 * add after row 138 usage: easyuifix.combobox_showblank(_30, _2e);
 */
easyuifix.combobox_showblank = function (combobox, b) {
    if (combobox.showblank) {
        b.unshift(combobox.blankdefault);
    }
}

/**
 * for jquery.combobox.js to showblank
 * add after row 350 usage: easyuifix.combobox_defaultblank();
 */
easyuifix.combobox_defaultblank = function () {
    $.fn.combobox.defaults = $.extend($.fn.combobox.defaults, {
        showblank: false,
        blankdefault: { value: ‘‘, text: ‘== 请选择 ==‘ }
    });    
}

/// <reference path="knockout-3.4.1.js" />
/**
 * 程序名: knockout自定义绑定
 **/

(function ($, ko) {
    var jqElement = function (element) {
        var jq = $(element);
        if ($(document).find(element).length == 0) {  //处理元素在父页面执行的情况
            if ($(parent.document).find(element).length > 0)
                jq = parent.$(element);
        }
        return jq;
    };

    /**
     * value binding
     * 例如：comboboxValue、lookupValue、combotreeValue
     */
    ko.creatEasyuiValueBindings = function (o) {
        o = $.extend({ type: ‘‘, event: ‘‘, getter: ‘getValue‘, setter: ‘setValue‘, fix: $.noop,formatter: function (v) { return v; }}, o);

        var customBinding = {
            init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
                var jq = jqElement(element), handler = jq[o.type](‘options‘)[o.event], opt = {};

                //handle the field changing
                opt[o.event] = function () {
                    handler.apply(element, arguments);
                    var value = jq[o.type](o.getter);
                    if (valueAccessor() == null) throw "viewModel中没有页面绑定的字段";
                    valueAccessor()(value);
                };

                //handle disposal (if KO removes by the template binding)
                ko.utils.domNodeDisposal.addDisposeCallback(element, function () {
                    jq[o.type]("destroy");
                });

                o.fix(element, valueAccessor);
                jq[o.type](opt);
            },
            update: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
                value = ko.utils.unwrapObservable(valueAccessor());
                jqElement(element)[o.type](o.setter, o.formatter(value));
            }
        };
        ko.bindingHandlers[o.type + ‘Value‘] = customBinding;
    };

    ko.creatEasyuiValueBindings({ type: ‘combobox‘, event: ‘onSelect‘ });
    ko.creatEasyuiValueBindings({ type: ‘combotree‘, event: ‘onChange‘ });
    ko.creatEasyuiValueBindings({ type: ‘datebox‘       , event: ‘onSelect‘ , formatter: com.formatDate });
    ko.creatEasyuiValueBindings({ type: ‘lookup‘        , event: ‘onChange‘ });
    ko.creatEasyuiValueBindings({ type: ‘numberbox‘     , event: ‘onChange‘ });
    
    /*
     * enable、disable binding
     * 例如：linkbuttonEnable、linkbuttonDisable
     */
    ko.creatEasyuiEnableBindings = function (o) {
        o = $.extend({ type: ‘‘,method:‘Enable‘, options:function(v){return ‘disabled‘;}, value: function (v) { return !v; } }, o);
        var customBinding = {
            update: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
                var enable = ko.toJS(valueAccessor());
                $(element)[o.type](o.options(enable), o.value(enable));
            }
        };
        ko.bindingHandlers[o.type + o.method] = customBinding;
    };
    ko.creatEasyuiEnableBindings({ type: ‘linkbutton‘, options: function (b) { return {disabled:!b}; } });
    ko.creatEasyuiEnableBindings({ type: ‘linkbutton‘,method:‘Disable‘, options: function (b) { return { disabled: b }; } });
    
    _readOnlyHandles = {};
    _readOnlyHandles.defaults = function (obj, b) {
        b ? obj.addClass("readonly").attr("readonly", true) : obj.removeClass("readonly").removeAttr("readonly");
    };
    _readOnlyHandles.combo = function (obj, b) {
        obj.combo(b ? "disable" : "enable");
    };
    
    /**
     * readonly binding
     * 例如：numberboxReadOnly、comboboxReadOnly，或者直接readOnly
     */
    ko.creatEasyuiReadOnlyBindings = function (o) {
        o = $.extend({ type: ‘‘, handler: _readOnlyHandles.defaults }, o);
        var customBinding = {
            update: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
                o.handler($(element),ko.toJS(valueAccessor()));
            }
        };
        ko.bindingHandlers[o.type ?  (o.type + ‘ReadOnly‘): ‘readOnly‘] = customBinding;
    };

    ko.creatEasyuiReadOnlyBindings(); //default readonly
    ko.creatEasyuiReadOnlyBindings({ type: ‘numberbox‘ });
    ko.creatEasyuiReadOnlyBindings({ type: ‘combobox‘, handler: _readOnlyHandles.combo });
    ko.creatEasyuiReadOnlyBindings({ type: ‘datebox‘, handler: _readOnlyHandles.combo });
    ko.creatEasyuiReadOnlyBindings({ type: ‘combotree‘, handler: _readOnlyHandles.combo });
    ko.creatEasyuiReadOnlyBindings({ type: ‘lookup‘, handler: _readOnlyHandles.combo });
     
    /**
     * datasource bingding
     */
    ko.bindingHandlers.datasource = {
        init: function (element, valueAccessor) {
            var jq = jqElement(element);
            var ds = ko.toJS(valueAccessor());
            if ($.isFunction(ds)) ds = ds.call();
            if (jq.data(‘treegrid‘))
                jq.treegrid(‘loadData‘, ds);
            else if (jq.data(‘datagrid‘))
                jq.datagrid(‘loadData‘, ds);
            else if (jq.data(‘combotree‘))
                jq.combotree(‘loadData‘, ds);
            else if (jq.data(‘combobox‘)) {
                var val = jq.combobox(‘getValue‘), ds = ds.rows || ds;
                jq.combobox(‘clear‘).combobox(‘loadData‘,ds).combobox(‘setValue‘, val);
            }
            else if (jq.data(‘tree‘))
                jq.tree(‘loadData‘, ds.rows || ds);
        }
    };

    /**
     * grid binding
     * datagrid、treegrid
     */
    ko.creatEasyuiGridBindings = function (gridType) {
        var gridBinding = {
            update: function (element, valueAccessor, allBindingsAccessor, viewModel) {
                var grid = jqElement(element), opts = ko.toJS(valueAccessor()), url = opts.url;
                var customLoader = function (queryParams) {
                    if (opts.pagination) {
                        var paging = grid.datagrid(‘getPager‘).pagination(‘options‘);
                        queryParams = $.extend(queryParams, { page: paging.pageNumber, rows: paging.pageSize });
                    }
                    com.ajax({
                        type: ‘get‘,
                        url: url,
                        data: queryParams,
                        success: function (d) {
                            if ($.isFunction(opts.afterCustomSuccess)) opts.afterCustomSuccess(d);
                            grid[gridType](‘loadData‘, d);
                        }
                    });
                };

                if (opts.treeField && opts.parentField) { //only for treegrid
                    opts.loadFilter = function (data) {
                        return utils.toTreeData(data.rows || data, opts.idField||opts.treeField, opts.parentField, "children");
                    };
                }

                var handler = function () {    
                    if (grid.data(gridType)) {
                        if (opts.customLoad)
                            customLoader(opts.queryParams);
                        else
                            grid[gridType](opts);
                    } else {
                        var defaults = {
                            iconCls: ‘icon icon-list‘,
                            nowrap: true,           //折行
                            rownumbers: true,       //行号
                            striped: true,          //隔行变色
                            singleSelect: true,     //单选
                            remoteSort: true,       //后台排序
                            pagination: false,      //翻页
                            pageSize: 20,
                            contentType: "application/json",
                            method: "POST"
                        };
                        var winsize = function (size) {
                            var ret = {};
                            if (size && size.w) ret.width = jqElement(window).width() - size.w;
                            if (size && size.h) ret.height = jqElement(window).height() - size.h;
                            return ret;
                        };

                        opts = $.extend(defaults, opts, winsize(opts.size));
                        if (opts.customLoad) {
                            if (opts.remoteSort)
                                opts.onSortColumn = function (sort, order) { customLoader($.extend(opts.queryParams, { sort: sort, order: order })); };

                            grid[gridType](opts);
                            customLoader(opts.queryParams);

                            if (opts.pagination)
                                grid[gridType](‘getPager‘).pagination({ onSelectPage: customLoader });
                        }
                        else
                            grid[gridType](opts);

                        valueAccessor()[gridType] = function () { return grid[gridType].apply(grid, arguments); }
                        valueAccessor()[‘$element‘] = function () { return grid; };
                        if (opts.size) jqElement(window).resize(function () { grid[gridType](‘resize‘, winsize(opts.size)); });
                    }
                };

                grid[gridType] ? handler() : using([gridType], function () {
                    handler();
                    if (gridType==‘treegrid‘) com.loadCss(‘/content/images/icon/icon.css‘, document, true);//解决图标被tree.css覆盖的问题
                });
            }
        };

        return gridBinding;
    };

    ko.bindingHandlers.datagrid = ko.creatEasyuiGridBindings(‘datagrid‘);
    ko.bindingHandlers.treegrid = ko.creatEasyuiGridBindings(‘treegrid‘);
    
    /**
     * easyui binding
     * 例如：easyuiCombotree、easyuiCombobox、easyuiLinkbutton
     */
    ko.createEasyuiInitBindings = function (o) {
        o = $.extend({ type: ‘‘ },o);
        var customBinding = {
            init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
                var jq = jqElement(element), opt = ko.mapping.toJS(valueAccessor());
                var handler = function () {
                    jq[o.type](opt);
                };
                jq[o.type] ? handler() : using(o.type, handler);

                //handle disposal (if KO removes by the template binding)
                ko.utils.domNodeDisposal.addDisposeCallback(element, function () {
                    jq[o.type]("destroy");
                });
                valueAccessor()["$element"] = function () { return jq };
            },
            update: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
                var jq = jqElement(element), opt = ko.mapping.toJS(valueAccessor());
                if (jq[o.type]) jq[o.type](opt);
            }
        };
        var bindName = ‘easyui‘ + o.type.replace(/(^|\s+)\w/g, function (s) {return s.toUpperCase();});
        ko.bindingHandlers[bindName] = customBinding;
    };

    ko.createEasyuiInitBindings({ type: ‘combotree‘ });
    ko.createEasyuiInitBindings({ type: ‘combobox‘ });
    ko.createEasyuiInitBindings({ type: ‘linkbutton‘ });

    /**
     * inputwidth、autoheight、autowidth binding
     */
    ko.bindingHandlers.inputwidth = {
        update: function (element, valueAccessor, allBindingsAccessor, viewModel) {
            var that = $(element), widthStr = ko.toJS(valueAccessor());
            var calcWidth = function (w) {
                var rate = 1
                if (typeof w == ‘string‘) {
                    if (w.indexOf("px") > -1 || w.indexOf("PX") > -1) w = w.replace("px", "").replace("PX", "");
                    if (w.indexOf("%") > -1) w = w.replace("%", "") / 100;
                }
                if (w > 0 && w <= 1) {
                    rate = w;
                    w = $(".val").width();
                }
                return w * rate;
            };
        
            var resizeWidth = function () {
                var width = calcWidth(widthStr);
                $.each([
                    { selector: ‘input.txtBox‘, handler: function (jq) { jq.width(width - 8); } },            //pading3*2 + border1*2 = 8
                    { selector: ‘input[comboname],input.combo-f‘, handler: function (jq) { jq.combo(‘resize‘, width); } }               
                ], function () {
                    var jq = that.find(this.selector);
                    if (jq.length > 0) this.handler(jq);
                    if (that.is(this.selector)) this.handler(that);
                });
            };

            resizeWidth();
            $(window).resize(resizeWidth);
        }
    };
    
    ko.bindingHandlers.autoheight = {
        update: function (element, valueAccessor, allBindingsAccessor, viewModel) {
            var that = $(element), obserable = valueAccessor(),
               height = $.isFunction(obserable) ? obserable() : obserable;
            that.height($(window).height() - height);
            $(window).resize(function () { that.height($(window).height() - height); });
        }
    };
    ko.bindingHandlers.autowidth = {
        update: function (element, valueAccessor, allBindingsAccessor, viewModel) {
            var that = $(element), obserable = valueAccessor(),
               width = $.isFunction(obserable) ? obserable() : obserable;
            that.width($(window).width() - width);
            $(window).resize(function () { that.width($(window).width() - width); });
        }
    };
    
    /**
     * 实现js与页面绑定
     */
    ko.bindingViewModel = function (viewModelInstance,node) {
        using(‘parser‘, function () {
            $.parser.onComplete = function () {
                ko.applyBindings(viewModelInstance, node || document.body);
            };
        });
    };
 
})(jQuery, ko);

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN">
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
 <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>材料收料单</title>
    <%@ include file="/common/head.jsp"%>
 </head>
 <body>
     <div class="toolbar">
        <a href="#" plain="true" class="easyui-linkbutton"  icon="icon-arrow_refresh"   title="刷新" data-bind="click:refreshClick">刷新</a>
        <a href="#" plain="true" class="easyui-linkbutton"  icon="icon-add"             title="新增" data-bind="click:addClick"    >新增</a>
        <a href="#" plain="true" class="easyui-linkbutton"  icon="icon-edit"            title="编辑" data-bind="click:editClick"   >编辑</a>
        <a href="#" plain="true" class="easyui-linkbutton"  icon="icon-cross"           title="删除" data-bind="click:deleteClick" >删除</a>    
        <a href="#" plain="true" class="easyui-linkbutton"  icon="icon-user-accept"     title="审核" data-bind="click:auditClick"  >审核</a>
    </div>
    
    <div class="container_12" style="position:relative;">
        <div class="grid_1 lbl">收料单号</div>
        <div class="grid_2 val"><input type="text" data-bind="value:form.billNo" class="easyui-autocomplete txtBox" data-options="url:rootPath+‘/mms/receive!getBillNo.do‘"/></div>
           
        <div class="grid_1 lbl">供应商</div>
        <div class="grid_2 val"><input type="text" data-bind="value:form.supplierName" class="easyui-autocomplete txtBox" data-options="url:rootPath+‘/mms/merchants!getNames.do‘"/></div>
        <div class="grid_1 lbl">合同名称</div>
        <div class="grid_2 val"><input type="text" data-bind="value:form.contractCode" class="txtBox"/></div>
           
        <div class="clear"></div>         
        
        <div class="grid_1 lbl">库房</div>
        <div class="grid_2 val"><input type="text" data-bind="comboboxValue:form.warehouseCode,datasource:dataSource.warehouseItems" class="easyui-combobox txtBox " data-options="showblank:true"/></div>
        <div class="grid_1 lbl">供应类型</div>
        <div class="grid_2 val"><input type="text" data-bind="comboboxValue:form.supplyType,datasource:dataSource.supplyType" class="easyui-combobox txtBox " data-options="showblank:true" /></div>
        <div class="grid_1 lbl">收料日期</div>
        <div class="grid_2 val"><input type="text" data-bind="value:form.receiveDate,readOnly:true" class="txtBox easyui-daterange"/></div>
        
        <div class="clear"></div>  
        
        <div class="prefix_9" style="position:absolute;top:5px;height:0;">  
            <a id="search" href="#" class="buttonHuge button-blue" data-bind="click:searchClick" style="margin:0 15px;">查询</a> 
            <a id="reset"  href="#" class="buttonHuge button-blue" data-bind="click:clearClick">清空</a>
        </div>                    
    </div>
    
    <table data-bind="datagrid:grid">
        <thead>  
            <tr>  
                <th field="billNo"              sortable="true" align="left"    width="90"                              >收料单号   </th>                       
                <th field="supplierName"        sortable="true" align="left"    width="200"                             >供应商     </th> 
                <th field="supplyType"          sortable="true" align="center"  width="70"  formatter="com.formateSupplyType" >供应类型   </th> 
                <th field="contractCode"        sortable="true" align="left"    width="100"                              >合同名称   </th> 
                <th field="warehouseName"       sortable="true" align="left"    width="100"                             >库房       </th> 
                <th field="receiveDate"         sortable="true" align="center"  width="120"  formatter="com.formatTime"  >收料日期   </th>                       
                <th field="totalMoney"          sortable="true" align="right"   width="70"  formatter="com.formatMoney" >金额       </th>  
                <th field="originalNum"         sortable="true" align="left"    width="90"                              >原始票号   </th>  
                <th field="doPerson"            sortable="true" align="left"    width="60"                              >经办人     </th>                                           
                <th field="remark"              sortable="true" align="left"    width="150"                             >备注       </th>   
            </tr>                            
        </thead>      
    </table> 
            
    <%@ include file="/common/foot.jsp"%>
    <script type="text/javascript" src="viewModel/mms/mms.com.js"></script>
    <script type="text/javascript" src="viewModel/mms/receive.js"></script>
    
    <script type="text/javascript">    
        using([‘messager‘, ‘dialog‘], function(){
            var data = ${data};                
            ko.bindingViewModel(new viewModelReceive(data));
        });
    </script>
 </body>
</html>

function viewModelReceive(data){ 
    com.formateSupplyType = utils.fnValueToText(data.dataSource.supplyType);
    
    var self = this;
    this.dataSource = data.dataSource;
    this.form = ko.mapping.fromJS(data.form);
    delete this.form.__ko_mapping__;
    this.grid = {
        size: { w: 4, h: 94 },
        url: rootPath + ‘/mms/receive!list.do‘,
        queryParams: ko.observable(),
        pagination: true,
        customLoad: false
    };
    
    this.grid.queryParams(data.form);
            
    this.refreshClick = function () {
        window.location.reload();
    };  
    
    this.addClick = function () {
        window.location.href = rootPath + ‘/mms/receive!add.do‘;
    }; 
    
    this.deleteClick = function () {
        var row = self.grid.datagrid(‘getSelected‘);
        if (!row) return com.message(‘warning‘, ‘请先选择一条收料单！‘);
        com.message(‘confirm‘, ‘确定要删除选中的收料单吗？‘, function (b) {
            if (b) {
                com.ajax({
                    type: ‘DELETE‘, 
                    url: rootPath + "/mms/receive!delete.do?billNo=" + row[‘billNo‘], 
                    success: function () {
                        com.message(‘success‘, ‘删除成功！‘);
                        self.searchClick();
                    }
                });
            }
        });
    };
    
    this.editClick = function () {
        var row = self.grid.datagrid(‘getSelected‘);
        if (!row) return com.message(‘warning‘, ‘请先选择一条收料单！‘);
        window.location.href = rootPath + ‘/mms/receive!edit.do?billNo=‘ + row[‘billNo‘];
    }; 
    
    this.searchClick = function () {
        var param = ko.toJS(this.form);
        this.grid.queryParams(param);
    }; 
    
    this.clearClick = function () {
        $.each(self.form, function () { this(‘‘); });
        this.searchClick();
    };     
    
    this.grid.onDblClickRow = this.editClick;

    this.auditClick = function () {
        var row = self.grid.datagrid(‘getSelected‘);
        if (!row) return com.message(‘warning‘, ‘请先选择一条收料单！‘);
        mms.com.auditDialogList(function (d) {
            com.ajax({
                type: ‘POST‘,
                url: rootPath + "/mms/receive!audit.do?billNo=" + row[‘billNo‘],
                data: JSON.stringify(d),
                success: function () {
                    com.message(‘success‘, ‘单据已审核！‘);
                }
            });
        });
    };        
}