在primefaces中使用颜色选择器的JQuery自然界面

Question

<h:outputText value="#{bean.color}" id="colorId"/>
<p:colorPicker value="#{bean.color}" />

JQuery颜色选择器组件有一个很好的接口来实现这一点。但我该怎么用呢？如何在生成组件的颜色选择器中注册onChange事件？

$('#colorSelector').ColorPicker({
    color: '#0000ff',
    onChange: function (hsb, hex, rgb) {
        $('#colorSelector div').css('backgroundColor', '#' + hex);
    }
});

Answer 1

我在网上找你的问题，但也找不到任何有用的解决办法。所以我决定使用与我的答案相同的方法。

以下是我的建议：

从primefaces中获取JS代码并重写它：

        <h:form prependId="false">

                <h:outputText value="t#{testas.color}" id="colorId3"/>
                <p:colorPicker id="cid" value="#{testas.color}" widgetVar="co" />           

        </h:form>


        <script type="text/javascript">

        PrimeFaces.widget.ColorPicker = PrimeFaces.widget.BaseWidget.extend({

            init: function(cfg) {
                this._super(cfg);

                this.input = $(this.jqId + '_input');
                this.cfg.popup = this.cfg.mode == 'popup';    
                this.jqEl = this.cfg.popup ? $(this.jqId + '_button') : $(this.jqId + '_inline');
                this.cfg.flat = !this.cfg.popup;
                this.cfg.livePreview = false;
                this.cfg.nestedInDialog = this.jqEl.parents('.ui-dialog:first').length == 1;

                this.bindCallbacks();

                //ajax update check
                if(this.cfg.popup) {
                    this.clearOrphanOverlay();
                }

                //create colorpicker
                this.jqEl.ColorPicker(this.cfg);

                //popup ui
                if(this.cfg.popup) {
                    PrimeFaces.skinButton(this.jqEl);
                    this.overlay = $(PrimeFaces.escapeClientId(this.jqEl.data('colorpickerId')));
                    this.livePreview = $(this.jqId + '_livePreview');
                }
            },

            bindCallbacks: function() {
                var _self = this;

                this.cfg.onChange = function(hsb, hex, rgb) {
                    _self.input.val(hex);

                    if(_self.cfg.popup) {

                        _self.livePreview.css('backgroundColor', '#' + hex);
                    }
                };

                this.cfg.onShow = function() {
                    if(_self.cfg.popup) {
                        _self.overlay.css('z-index', ++PrimeFaces.zindex);
                    }

                    var win = $(window),
                    positionOffset = _self.cfg.nestedInDialog ? '-' + win.scrollLeft() + ' -' + win.scrollTop() : null;

                    if(_self.cfg.nestedInDialog) {
                        _self.overlay.css('position', 'fixed');
                    }

                    //position the overlay relative to the button
                    _self.overlay.css({
                                left:'',
                                top:''
                        })
                        .position({
                            my: 'left top'
                            ,at: 'left bottom'
                            ,of: _self.jqEl,
                            offset : positionOffset
                        });
                }

                this.cfg.onHide = function(cp) {
                    _self.overlay.css('z-index', ++PrimeFaces.zindex);

                    $('#colorId3').html(_self.input.val()); // -> ADDED BY ME

                    $(cp).fadeOut('fast');
                    return false;
                }
            },

            /**
             * When a popup colorpicker is updated with ajax, a new overlay is appended to body and old overlay
             * would be orphan. We need to remove the old overlay to prevent memory leaks.
             */
            clearOrphanOverlay: function() {
                var _self = this;

                $(document.body).children('.ui-colorpicker-container').each(function(i, element) {
                    var overlay = $(element),
                    options = overlay.data('colorpicker');

                    if(options.id == _self.id) {
                        overlay.remove();
                        return false;   //break;
                    }
                });
            }

        });

        </script>