Extjs4——表单与输入控件

Posted 2020-10-07

 

1.表单的简单形式：

 

  var form = new Ext.form.FormPanel({
        title: ‘form‘,
        defaultType: ‘textfield‘,
        buttonAlign: ‘center‘,
        frame: true,
        width: 220,
        fieldDefaults: {
            labelAlign: ‘right‘,
            labelWidth: 70
        },

        items: [{
            fieldLabel: ‘文本框‘
        }],
        buttons: [{
            text: ‘按钮‘
        }]
    });
    form.render("form");

 

效果如下：

 

 2.Ext中的输入控件：

 

Ext中提供的包括的控件及其继承关系如下图：

 

 2.1 基本输入控件Ext.form.Field:

 

Field中定义了输入控件通用的属性和功能函数,它们大致分为三类：

 

 

 

    // htmlEditor需要这个
    Ext.tip.QuickTipManager.init();

    var field1 = new Ext.form.TextField({
        fieldLabel: ‘qtip‘,
        msgTarget: ‘qtip‘,
        allowBlank: false
    });
    var field2 = new Ext.form.TextField({
        fieldLabel: ‘title‘,
        msgTarget: ‘title‘,
        allowBlank: false
    });
    var field3 = new Ext.form.TextField({
        fieldLabel: ‘side‘,
        msgTarget: ‘side‘,
        allowBlank: false
    });
    var field4 = new Ext.form.TextField({
        fieldLabel: ‘under‘,
        msgTarget: ‘under‘,
        allowBlank: false
    });

    var form = new Ext.form.FormPanel({
        title: ‘form‘,
        frame: true,
        items: [field1, field2, field3, field4],
        renderTo: ‘form‘
    });


    form.getForm().isValid();

 

2.2 文本输入控件Ext.form.TextField:

 

除了Ext.form.Field提供的通用功能和属性外，TextField还可以检测输入的数据是否为空和输入内容的最大及最小长度

 

 // HtmlEditor需要这个
    Ext.QuickTips.init();

    var field = new Ext.form.TextField({
        fieldLabel: ‘empty‘,
        allowBlank: false,
        emptyText: ‘空‘,
        maxLength: 50,
        minLength: 10
    });

    var form = new Ext.form.FormPanel({
        title: ‘form‘,
        frame: true,
        items: [field],
        renderTo: ‘form‘
    });

});

 

效果如下：

 

 

2.3 多行文本输入控件Ext.form.TextArea

 

 // HtmlEditor需要这个
    Ext.QuickTips.init();

    var field = new Ext.form.TextArea({
        width: 200,
        grow: true,
//grow设为true时，多行文本框会根据输入内容自动修改高度，而Ext.form.TextFiel会自动修改宽度
        preventScrollbars: true,
//防止出现滚动条
        fieldLabel: ‘empty‘,
        allowBlank: false,
        emptyText: ‘空‘,
        maxLength: 50,
        minLength: 10,
        value: ‘第一行\\n第二行\\n第三行\\n第四行‘
    });

    var form = new Ext.form.FormPanel({
        title: ‘form‘,
        frame: true,
        items: [field],
        renderTo: ‘form‘
    });

 

2.4 日期输入控件Ext.form.DateField:

 

 var field = new Ext.form.DateField({
        fieldLabel: ‘日期‘,
        emptyText: ‘请选择‘,
        format: ‘Y-m-d‘,
        disabledDays: [0,6]//禁止选星期六和星期日
    });

 

2.5  时间输入控件Ext.form.TimeField:

 

    var field = new Ext.form.TimeField({
        fieldLabel: ‘时间‘,
        emptyText: ‘请选择‘,
        minValue: ‘10:00 AM‘,
        maxValue: ‘2:00 PM‘,
        increment: 30 //时间间隔
    });

 

2.6 在线编辑器Ext.form.HtmlEditor:

 

 通过enable选项启用或禁用对应的功能按钮

 

var field = new Ext.form.HtmlEditor({
        fieldLabel: ‘在线编辑器‘,
        enableAlignments: true,
        enableColors: true,
        enableFont: true,
        enableFontSize: true,
        enableFormat: true,
        enableLinks: true,
        enableLists: true,
        enableSourceEdit: true,
        fontFamilies: [‘宋体‘, ‘黑体‘]
    });

 

效果如下:

 

 

2.7 隐藏域ext.form.Hidden:

 

隐藏域ext.form.Hidden直接继承自Ext.form.Field,可以通过setValue（）和getValue（）函数对它执行赋值和取值操作，但她不会显示在页面上。

 

 var field = new Ext.form.Hidden({
        name: ‘hiddenId‘
    });
    field.setValue("some thing");
    var value = field.getValue();

    var form = new Ext.form.FormPanel({
        title: ‘form‘,
        frame: true,
        items: [field],
        renderTo: ‘form‘
    });

 

2.8 复选框（Checkbox)和单选按钮（radio）：

2.8.1 复选框：

boxLabel是Checkbox和Radio两个控件独有的。

var form = new Ext.form.FormPanel({
        labelAlign: ‘right‘,
        title: ‘form‘,
        labelWidth: 50,
        buttonAlign: ‘center‘,
        frame:true,
        url: ‘form2.jsp‘,
        width: 280,

        items: [{
            xtype: ‘fieldset‘,
            title: ‘多选‘,
            autoHeight:true,
            defaultType: ‘checkbox‘,
            hideLabels: true,
            items: [
                {boxLabel: ‘多选一‘, inputValue: ‘1‘, checked: true},
                {boxLabel: ‘多选二‘, inputValue: ‘2‘},
                {boxLabel: ‘多选三‘, inputValue: ‘3‘}//inputValue来指定这三个CheckBox的值，以来区分它们
            ]
        }],
        buttons: [{
            text: ‘提交‘,
            handler: function() {
                form.getForm().submit();
            }
        }]
    });
    form.render("form");

 

2.8.2 单选按钮：

Ext中的单选按钮继承自复选框，radio有一个自己独有的getGroupValue（）函数，可以用来或得某个分组中被选中的Radio的值

var form = new Ext.form.FormPanel({
        labelAlign: ‘right‘,
        title: ‘form‘,
        labelWidth: 50,
        buttonAlign: ‘center‘,
        frame:true,
        url: ‘form2.jsp‘,
        width: 280,

        items: [{
            xtype: ‘fieldset‘,
            title: ‘单选‘,
            autoHeight:true,
            defaultType: ‘radio‘,
            hideLabels: true,
            items: [
                {boxLabel: ‘单选一‘, name: ‘radio‘, inputValue: ‘1‘, checked: true},
                {boxLabel: ‘单选二‘, name: ‘radio‘, inputValue: ‘2‘},
                {boxLabel: ‘单选三‘, name: ‘radio‘, inputValue: ‘3‘}
            ]
        }],
        buttons: [{
            text: ‘提交‘,
            handler: function() {
                form.getForm().submit();
            }
        }, {
            text: ‘getGroupValue‘,
            handler: function() {
                Ext.Msg.alert(‘信息‘, form.getForm().findField(‘radio‘).getGroupValue());
            }
        }]
    });
    form.render("form");

点击getGroupValue后的效果：

 

 

2.8.3 CheckBoxGroup和RadioGroup控件

 

有了这两个控件，我们就可以为复选框和单选按钮控件实现各种复杂的排列方式了,默认横向排列方式，可以通过设置column属性来设置按列（一列或多列）排列，还可以自定义多列排列。

    var form = new Ext.form.FormPanel({
        title: ‘radio group‘,
        frame: true,
        width: 600,
        items: [{
            xtype: ‘radiogroup‘,
            fieldLabel: ‘自动布局‘,
            items: [
                {boxLabel: ‘Item 1‘, name: ‘cb-auto-1‘},
                {boxLabel: ‘Item 2‘, name: ‘cb-auto-2‘, checked: true},
                {boxLabel: ‘Item 3‘, name: ‘cb-auto-3‘},
                {boxLabel: ‘Item 4‘, name: ‘cb-auto-4‘},
                {boxLabel: ‘Item 5‘, name: ‘cb-auto-5‘}
            ]
        },{
            xtype: ‘radiogroup‘,
            fieldLabel: ‘单列‘,
            itemCls: ‘x-check-group-alt‘,
            columns: 1,
            items: [
                {boxLabel: ‘Item 1‘, name: ‘cb-col-1‘},
                {boxLabel: ‘Item 2‘, name: ‘cb-col-2‘, checked: true},
                {boxLabel: ‘Item 3‘, name: ‘cb-col-3‘}
            ]
        },{
                xtype: ‘radiogroup‘,
                fieldLabel: ‘多列（水平）‘,
                columns: 3,
                items: [
                    {boxLabel: ‘Item 1‘, name: ‘cb-horiz-1‘},
                    {boxLabel: ‘Item 2‘, name: ‘cb-horiz-2‘, checked: true},
                    {boxLabel: ‘Item 3‘, name: ‘cb-horiz-3‘},
                    {boxLabel: ‘Item 4‘, name: ‘cb-horiz-4‘},
                    {boxLabel: ‘Item 5‘, name: ‘cb-horiz-5‘}
                ]
        },{
            xtype: ‘radiogroup‘,
            fieldLabel: ‘多列（竖直）‘,
            itemCls: ‘x-check-group-alt‘,
            columns: 3,
            vertical: true,
            items: [
                {boxLabel: ‘Item 1‘, name: ‘cb-vert-1‘},
                {boxLabel: ‘Item 2‘, name: ‘cb-vert-2‘, checked: true},
                {boxLabel: ‘Item 3‘, name: ‘cb-vert-3‘},
                {boxLabel: ‘Item 4‘, name: ‘cb-vert-4‘},
                {boxLabel: ‘Item 5‘, name: ‘cb-vert-5‘}
            ]
        },{
            xtype: ‘radiogroup‘,
            fieldLabel: ‘多列<br />（自定义）‘,
            columns: [100, 100],
            vertical: true,
            items: [
                {boxLabel: ‘Item 1‘, name: ‘cb-custwidth‘, inputValue: 1},
                {boxLabel: ‘Item 2‘, name: ‘cb-custwidth‘, inputValue: 2, checked: true},
                {boxLabel: ‘Item 3‘, name: ‘cb-custwidth‘, inputValue: 3},
                {boxLabel: ‘Item 4‘, name: ‘cb-custwidth‘, inputValue: 4},
                {boxLabel: ‘Item 5‘, name: ‘cb-custwidth‘, inputValue: 5}
            ]
        },{
            xtype: ‘radiogroup‘,
            itemCls: ‘x-check-group-alt‘,
            fieldLabel: ‘自自定义布局‘,
            allowBlank: false,
            anchor: ‘95%‘,
            items: [{
                columnWidth: ‘.25‘,
                items: [
                    {xtype: ‘label‘, text: ‘Heading 1‘, cls:‘x-form-check-group-label‘, anchor:‘-15‘},
                    {boxLabel: ‘Item 1‘, name: ‘cb-cust-1‘},
                    {boxLabel: ‘Item 2‘, name: ‘cb-cust-2‘}
                ]
            },{
                columnWidth: ‘.5‘,
                items: [
                    {xtype: ‘label‘, text: ‘Heading 2‘, cls:‘x-form-check-group-label‘, anchor:‘-15‘},
                    {boxLabel: ‘A long item just for fun‘, name: ‘cb-cust-3‘}
                ]
            },{
                columnWidth: ‘.25‘,
                items: [
                    {xtype: ‘label‘, text: ‘Heading 3‘, cls:‘x-form-check-group-label‘, anchor:‘-15‘},
                    {boxLabel: ‘Item 4‘, name: ‘cb-cust-4‘},
                    {boxLabel: ‘Item 5‘, name: ‘cb-cust-5‘}
                ]
            }]
        }]
    });

    form.render(document.body);

 

效果如下：

 

 2.9 滑动条表单控件：

 

 var form = new Ext.form.FormPanel({
        width : 400,
        height: 160,
        title : ‘滑动条表单控件‘,

        bodyStyle  : ‘padding: 10px;‘,
        renderTo   : ‘container‘,
        defaultType: ‘sliderfield‘,
        buttonAlign: ‘left‘,

        defaults: {
            anchor: ‘95%‘,
            tipText: function(thumb){
                return String(thumb.value) + ‘%‘;
            }
        },
        items: [{
            fieldLabel: ‘Sound Effects‘,
            value: 50,
            name: ‘fx‘
        },{
            fieldLabel: ‘Ambient Sounds‘,
            value: 80,
            name: ‘ambient‘
        },{
            fieldLabel: ‘Interface Sounds‘,
            value: 25,
            name: ‘iface‘
        }],
        buttons: [{
            text: ‘submit‘
        }, {
            text: ‘reset‘
        }]
    });

 

效果如下：

 

也可以在同一滑动条上指定多个滑块，让用户可以同时指定多个数值，只需为values属性指定一个数组

  var horizontal = new Ext.Slider({
        renderTo: ‘multi-slider-horizontal‘,
        width   : 214,
        minValue: 0,
        maxValue: 100,
        values  : [10, 50, 90],
        plugins : new Ext.slider.Tip()
    });

    var vertical = new Ext.Slider({
        renderTo : ‘multi-slider-vertical‘,
        vertical : true,
        height   : 214,
        minValue: 0,
        maxValue: 100,
        values  : [10, 50, 90],
        plugins : new Ext.slider.Tip()
    });

    Ext.get(‘btn‘).on(‘click‘, function() {
        Ext.Msg.alert(‘info‘, horizontal.getValues() + ‘|‘ + vertical.getValues());
    });

 

效果如下：

 2.10  ComboBox控件：

Ext中的combobox与HTML中的select没有任何关系，它完全是div重写的