Pull request #2849: BI-106835 style：表单左侧标题可支持样式定义

Merge in VISUAL/fineui from ~CLAIRE.TANG/fineui:master to master

* commit 'afa9d7b18f976a0c3b8a96e1ac33d16f144d5431':
  BI-106835 style：表单左侧标题可支持样式定义
  BI-106835 style：表单左侧标题可支持样式定义

src/component/form/form.field.js

@@ -9,6 +9,7 @@
         baseCls: "bi-form-field",
         label: "",
         el: {},
+        headerCls: "",
         labelAlign: "right", // 文字默认右对齐
         validate: function () {
             return true;
@@ -69,6 +70,7 @@
                     textAlign: o.labelAlign,
                     text: o.label,
                     width: o.labelWidth,
+                    cls: o.headerCls,
                     rgap: 20 // 表单文字与右侧输入间距均为20px
                 }
             }, field] : [field]

src/component/form/form.js

@@ -18,7 +18,8 @@
             label: "",
             el: {}
         }],
-        labelWidth: ""
+        labelWidth: "",
+        headerCls: "", // 左侧文字样式
     },
 
     render: function () {
@@ -44,6 +45,7 @@
                 height: item.el.height || 28,
                 labelAlign: o.labelAlign,
                 labelWidth: o.labelWidth,
+                headerCls: o.headerCls,
                 el: item.el,
                 label: item.label,
                 tip: item.tip,