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WebRoot/plugins/websocketInstantMsg/ext4/ux/FieldReplicator.js 1.66 KB
ad5081d3   孙向锦   初始化项目
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  /**
   * @class Ext.ux.FieldReplicator
   * <p>A plugin for Field Components which creates clones of the Field for as
   * long as the user keeps filling them. Leaving the final one blank ends the repeating series.</p>
   * <p>Usage:</p>
   * <pre><code>
      {
          xtype: 'combo',
          plugins: [ Ext.ux.FieldReplicator ],
          triggerAction: 'all',
          fieldLabel: 'Select recipient',
          store: recipientStore
      }
   * </code></pre>
   */
  Ext.define('Ext.ux.FieldReplicator', {
      singleton: true,
  
      init: function(field) {
          // Assign the field an id grouping it with fields cloned from it. If it already
          // has an id that means it is itself a clone.
          if (!field.replicatorId) {
              field.replicatorId = Ext.id();
          }
  
          field.on('blur', this.onBlur, this);
      },
  
      onBlur: function(field) {
          var ownerCt = field.ownerCt,
              replicatorId = field.replicatorId,
              isEmpty = Ext.isEmpty(field.getRawValue()),
              siblings = ownerCt.query('[replicatorId=' + replicatorId + ']'),
              isLastInGroup = siblings[siblings.length - 1] === field,
              clone, idx;
  
          // If a field before the final one was blanked out, remove it
          if (isEmpty && !isLastInGroup) {
              Ext.Function.defer(field.destroy, 10, field); //delay to allow tab key to move focus first
          }
          // If the field is the last in the list and has a value, add a cloned field after it
          else if(!isEmpty && isLastInGroup) {
              clone = field.cloneConfig({replicatorId: replicatorId});
              idx = ownerCt.items.indexOf(field);
              ownerCt.add(idx + 1, clone);
          }
      }
  
  });