DataUtility 入门教程二[按钮：Button]

一、效果

二、代码

public class MideaNoAttrClassificationPickerDataUtility extends AbstractDataUtility {
	@Override
    public Object getDataValue(String component_id, Object datum, ModelContext modelcontext) throws WTException {
        NmCommandBean commandBean = modelcontext.getNmCommandBean();
        Object component = null;
        ComponentMode componentMode = modelcontext.getDescriptorMode();

        if (componentMode.equals(ComponentMode.EDIT) || componentMode.equals(ComponentMode.CREATE)) {
            component = createPickerComponent(component_id, datum, modelcontext, componentMode);
        } else {
            com.ptc.core.components.rendering.guicomponents.Label lable = new com.ptc.core.components.rendering.guicomponents.Label("");
            String rawValue = (String) modelcontext.getRawValue();
            if (rawValue != null) {
                LWCStructEnumAttTemplate claObj = MPLUtil.getLWCStructEnumAttTemplateByName(rawValue);
                String resPath = ClassificationQueryUtil.getClassificationPath(claObj);
                lable.setValue(resPath);
                component = lable;
            }
        }
        return component;
    }

    private Object createPickerComponent(String component_id, Object datum, ModelContext mc, ComponentMode componentMode) throws WTException {
        ArrayList<GuiComponent> components = new ArrayList<GuiComponent>();
        //默认值
        String rawValue = (String) mc.getRawValue();
        if(rawValue == null){
        	rawValue = "";
        }
        
        TextBox clsPageState11 = createTextBox("", componentMode);
        clsPageState11.setId("==");
        clsPageState11.setName("==");
        clsPageState11.setInputType("hidden");
        clsPageState11.setHidden(true);
        String hiddenDefaultValue11 = "=============";
        clsPageState11.setValue(hiddenDefaultValue11);//设置默认值
        components.add(clsPageState11);
        
        /***** TEXT BOX for data store *****/
        TextBox textBoxForStore = createTextBox(component_id, componentMode);
        textBoxForStore.setId(component_id);
        //textBoxForStore.setName(component_id);
        textBoxForStore.setInputType("hidden");
        textBoxForStore.setColumnName(AttributeDataUtilityHelper.getColumnName(component_id, datum, mc));
        textBoxForStore.setValue(rawValue);//设置默认值
        components.add(textBoxForStore);

        /***** TEXT BOX for data display *****/
        TextBox textBoxDisplay = createTextBox(component_id + "_display", componentMode);
        textBoxDisplay.setId(component_id + "_display");
        textBoxDisplay.setName(component_id + "_display");
        textBoxDisplay.setEnabled(true);
        textBoxDisplay.setEditable(true);
        textBoxDisplay.setReadOnly(true);
        textBoxDisplay.setRequired(isRequired(mc, component_id));
        //textBoxDisplay.setColumnName(AttributeDataUtilityHelper.getColumnName(component_id, datum, mc));
        LWCStructEnumAttTemplate claObj = null;
        String resPath = "";
        if (!(rawValue ==null || rawValue.equals(""))) {//设置默认全路径名称
        	try{
        		claObj = MPLUtil.getLWCStructEnumAttTemplateByName(rawValue);
        		if(claObj==null){
        			textBoxDisplay.setValue(rawValue+"(错误分类！)");
        		}else{
        			resPath = ClassificationQueryUtil.getClassificationPath(claObj);
        			textBoxDisplay.setValue(resPath);
        		}
            }catch (Exception e) {
    			e.printStackTrace();
    			textBoxDisplay.setValue(rawValue+"(错误分类！)");
    		}
        }
        components.add(textBoxDisplay);
        
//        //如果有默认值，则增加隐藏字段，在页通过此隐藏字段决定是否显示分类页面。
//        if (rawValue != null && !rawValue.equals("")) {
//        	if(claObj!=null){
//        		TextBox clsPageState = createTextBox("", componentMode);
//                clsPageState.setId("_id_has_Cls_Value_");
//                clsPageState.setName("_has_Cls_Value_");
//                clsPageState.setInputType("hidden");
//                clsPageState.setHidden(true);
//                String hiddenDefaultValue = "{'clsInternalName':'" + claObj.getName() + "', 'clsOid':'" + PersistenceHelper.getObjectIdentifier(claObj).getStringValue() + "'," + " 'componentId':'"
//                        + component_id + "' }";
//                clsPageState.setValue(hiddenDefaultValue);//设置默认值
//                components.add(clsPageState);
//        	}
//        }
        //String imgClean = "netmarkets/images/clear_16x16.gif";
        
        String host = com.midea.issue.ConstantResource.host;
        String url = "javascript:window.open('" + host + "netmarkets/jsp/midea/common/noAttrClassificationSelectorWizardHome.jsp?componentId=" + component_id
                + "','','toolbar=no,menubar=no,location=no,status=no,resizable=yes')";

        IconComponent picker = new IconComponent("Search...");
        picker.setName("Search...");
        picker.setSrc("netmarkets/images/search.gif");
        picker.setId(component_id + "_picker");

        picker.addJsAction("onClick", url);
        picker.addJsAction("href", "javascript:void(0)");
        components.add(picker);
        
        IconComponent iconComponentClean = new IconComponent("Clean...");
        iconComponentClean.setName("Clean...");
        iconComponentClean.setSrc("netmarkets/images/clear_16x16.gif");
        iconComponentClean.addJsAction("onClick", "javascript:cleanMideaClsValue('" + component_id + "','" + component_id + "_display')");
        iconComponentClean.addJsAction("href", "javascript:void(0)");
        components.add(iconComponentClean);
        return new GUIComponentArray(components);
    }

    private Object displayDataUtility(String component_id, Object datum, ModelContext mc) throws WTException {
        String value = "";
        Label inheritedFrom = new Label("");
        inheritedFrom.setColumnName(AttributeDataUtilityHelper.getColumnName(component_id, datum, mc));
        inheritedFrom.setId(component_id);
        String oids = (String) mc.getRawValue();
        if (oids != null) {
            String[] oidArray = oids.split(";");
            for (int i = 0; i < oidArray.length; i++) {
                String oid = oidArray[i];
                ReferenceFactory rf = new ReferenceFactory();
                Persistable p = rf.getReference(oid).getObject();

                if (p instanceof WTDocumentMaster) {
                    WTDocumentMaster docMaster = (WTDocumentMaster) p;

                    if (i == 0) {
                        value = docMaster.getNumber();
                    } else {
                        value = value + ";" + docMaster.getNumber();
                    }
                }
            }
        }
        inheritedFrom.setValue(value);
        return inheritedFrom;
    }
    
    private TextBox createTextBox(String component_id, ComponentMode componentMode) throws WTException {
        TextBox text = new TextBox();
        text.setMaxLength(200);
        text.setWidth(30);
        text.setId(component_id);
        //text.setEditable(isComponentEditable(component_id, componentMode));
        return text;
    }

    
    private static boolean isRequired(ModelContext mc, String attrName) {
        boolean flag = false;
        TypeIdentifier typeIden = null;
        try {
            typeIden = mc.getTypeIdentifier();
            List<String> ret = getIBAConstraintBySofttypeIBA(typeIden, attrName);
            for (String contString : ret) {
                if (contString.indexOf("ValueRequiredConstraint") > -1) {
                    flag = true;
                    break;
                }
            }
        } catch (WTException e) {
            e.printStackTrace();
        }
        return flag;
    }
    
    private static List<String> getIBAConstraintBySofttypeIBA(
            TypeIdentifier typeIden, String attrname) throws WTException {
        List<String> ret = new ArrayList<String>();
        TypeDefinitionReadView tdrv = TypeDefinitionServiceHelper.service
                .getTypeDefView(typeIden);
        AttributeDefinitionReadView adrv = tdrv.getAttributeByName(attrname);
        if (adrv == null) {
            return ret;
        }
        Collection<ConstraintDefinitionReadView> constraints = adrv
                .getAllConstraints();
        for (ConstraintDefinitionReadView constraint : constraints) {
            ConstraintRuleDefinitionReadView crdrv = constraint.getRule();
            if (crdrv != null) {
                String defClassname = crdrv.getDefClassname();
                String ruleClassName = crdrv.getRuleClassname();
                String constraintStr = defClassname + ":" + ruleClassName;
                ret.add(constraintStr);
            }
        }
        return ret;
    }
}