Java tutorial
/** * Copyright 2008-2015 Qualogy Solutions B.V. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.qualogy.qafe.gwt.client.ui.renderer; import com.google.gwt.event.dom.client.BlurEvent; import com.google.gwt.event.dom.client.BlurHandler; import com.google.gwt.event.dom.client.KeyCodes; import com.google.gwt.event.dom.client.KeyPressEvent; import com.google.gwt.event.dom.client.KeyPressHandler; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.user.client.DOM; import com.google.gwt.user.client.Element; import com.google.gwt.user.client.Event; import com.google.gwt.user.client.ui.RichTextArea; import com.google.gwt.user.client.ui.UIObject; import com.google.gwt.user.client.ui.VerticalPanel; import com.google.gwt.user.client.ui.Widget; import com.qualogy.qafe.gwt.client.component.LabeledTextAreaFieldWidget; import com.qualogy.qafe.gwt.client.component.LabeledTextFieldWidget; import com.qualogy.qafe.gwt.client.component.QTextArea; import com.qualogy.qafe.gwt.client.context.ClientApplicationContext; import com.qualogy.qafe.gwt.client.ui.widget.RichTextToolbar; import com.qualogy.qafe.gwt.client.vo.ui.ComponentGVO; import com.qualogy.qafe.gwt.client.vo.ui.TextAreaGVO; public class TextAreaRenderer extends AbstractComponentRenderer { // CHECKSTYLE.OFF: CyclomaticComplexity public UIObject render(ComponentGVO component, String uuid, String parent, String context) { Widget uiObject = null; if (component != null) { if (component instanceof TextAreaGVO) { final ComponentGVO finalComponentGVO = component; final String finalUuid = uuid; final String finalParent = parent; TextAreaGVO gvo = (TextAreaGVO) component; if (gvo.getDisplayname() != null && gvo.getDisplayname().length() > 0) { if (gvo.getMenu() != null) { uiObject = new LabeledTextAreaFieldWidget(gvo.getDisplayname(), gvo.getOrientation(), gvo, uuid, parent) { @Override public void onBrowserEvent(Event event) { if (event.getTypeInt() == Event.ONCONTEXTMENU) { DOM.eventPreventDefault(event); applyContextMenu(event, finalComponentGVO, finalUuid, finalParent); } super.onBrowserEvent(event); } @Override protected void setElement(Element elem) { super.setElement(elem); sinkEvents(Event.ONCONTEXTMENU); } }; } else { uiObject = new LabeledTextAreaFieldWidget(gvo.getDisplayname(), gvo.getOrientation(), gvo, uuid, parent); } } else { if (gvo.getRich() != null) { if (gvo.getRich().booleanValue()) { // This sample is taken from the KitchenSick demo RichTextArea area = new RichTextArea(); RichTextToolbar tb = new RichTextToolbar(area); VerticalPanel p = null; if (gvo.getMenu() != null) { p = new VerticalPanel() { @Override public void onBrowserEvent(Event event) { if (event.getTypeInt() == Event.ONCONTEXTMENU) { DOM.eventPreventDefault(event); applyContextMenu(event, finalComponentGVO, finalUuid, finalParent); } super.onBrowserEvent(event); } @Override protected void setElement(Element elem) { super.setElement(elem); sinkEvents(Event.ONCONTEXTMENU); } }; } else { p = new VerticalPanel(); } p.add(tb); p.add(area); area.setHeight("14em"); area.setWidth("100%"); tb.setWidth("100%"); p.setWidth("100%"); //p.setStyleName("qafe_rich_textarea"); DOM.setStyleAttribute(p.getElement(), "marginRight", "4px"); RendererHelper.fillIn(component, area, uuid, parent, context); RendererHelper.fillIn(component, p, uuid, parent, context); area.setText(gvo.getValue()); area.setEnabled(gvo.getEditable().booleanValue()); uiObject = p; if (gvo.getRequired() != null && gvo.getRequired().booleanValue()) { DOM.setElementProperty(uiObject.getElement(), "required", "true"); RendererHelper.setStyleForElement(uiObject.getElement(), "background", "red"); } } else { if (gvo.getMenu() != null) { uiObject = new QTextArea() { @Override public void onBrowserEvent(Event event) { if (event.getTypeInt() == Event.ONCONTEXTMENU) { DOM.eventPreventDefault(event); applyContextMenu(event, finalComponentGVO, finalUuid, finalParent); } super.onBrowserEvent(event); } @Override protected void setElement(Element elem) { super.setElement(elem); sinkEvents(Event.ONCONTEXTMENU); } }; } else { uiObject = new QTextArea(); } QTextArea ta = (QTextArea) uiObject; RendererHelper.fillIn(component, uiObject, uuid, parent, context); if (gvo.getCols() > 0) { ta.setCharacterWidth(gvo.getCols()); } else { ta.setCharacterWidth(80); } if (gvo.getMaxLength() != null) { if (gvo.getMaxLength().intValue() > 0) { DOM.setElementAttribute(uiObject.getElement(), "maxlength", gvo.getMaxLength().toString()); } } ta.setVisibleLines(gvo.getRows()); ta.setText(gvo.getValue()); ta.setEditable(gvo.getEditable().booleanValue()); if (gvo.getRequired() != null && gvo.getRequired().booleanValue()) { DOM.setElementProperty(uiObject.getElement(), "required", "true"); RendererHelper.setStyleForElement(uiObject.getElement(), "background", "red"); ((QTextArea) uiObject).addValueChangeHandler(new ValueChangeHandler<String>() { public void onValueChange(ValueChangeEvent<String> event) { if (event.getSource() instanceof QTextArea) { UIObject ui = (UIObject) event.getSource(); String value = ((QTextArea) ui).getText(); if (value != null && value.length() > 0) { ui.removeStyleName("qafe_invalid_field"); } else { ui.addStyleName("qafe_invalid_field"); } } } }); } } } } //uiObject.setStylePrimaryName(gvo.getStyleClassName()); handleMaxLengthAttribute(gvo, uiObject); handleMinLengthAttribute(gvo, uiObject); } } return uiObject; } // CHECKSTYLE.ON: CyclomaticComplexity private void handleMinLengthAttribute(final TextAreaGVO gvo, UIObject uiObject) { if (gvo.getMinLength() != null) { final int minLength = gvo.getMinLength().intValue(); if (uiObject instanceof QTextArea) { ((QTextArea) uiObject).addKeyPressHandler(new KeyPressHandler() { public void onKeyPress(KeyPressEvent event) { if (event.getCharCode() == KeyCodes.KEY_TAB || event.getCharCode() == KeyCodes.KEY_ENTER) { if (event.getSource() instanceof QTextArea) { QTextArea textArea = (QTextArea) event.getSource(); if ((textArea.getText() != null && textArea.getText().length() < minLength)) { ClientApplicationContext .getInstance().log( "Textarea minimum length check", "The length of this field [" + gvo.getId() + "] must be larger than " + minLength, true); } } } } }); ((QTextArea) uiObject).addBlurHandler(new BlurHandler() { public void onBlur(BlurEvent event) { if (event.getSource() instanceof QTextArea) { QTextArea textArea = (QTextArea) event.getSource(); if ((textArea.getText() != null && textArea.getText().length() < minLength)) { ClientApplicationContext.getInstance().log("Textarea minimum length check", "The length of this field [" + gvo.getId() + "] must be larger than " + minLength, true); } } } }); } else if (uiObject instanceof LabeledTextFieldWidget) { final String prompt = ((LabeledTextFieldWidget) uiObject).getLabel().getText(); ((LabeledTextFieldWidget) uiObject).addKeyPressHandler(new KeyPressHandler() { public void onKeyPress(KeyPressEvent event) { if (event.getCharCode() == KeyCodes.KEY_TAB || event.getCharCode() == KeyCodes.KEY_ENTER) { if (event.getSource() instanceof QTextArea) { QTextArea textArea = (QTextArea) event.getSource(); if ((textArea.getText() != null && textArea.getText().length() < minLength)) { ClientApplicationContext.getInstance().log("Textarea minimum length check", "The length of this field [" + prompt + "] must be larger than " + minLength, true); } } } } }); ((LabeledTextFieldWidget) uiObject).addBlurHandler(new BlurHandler() { public void onBlur(BlurEvent event) { if (event.getSource() instanceof LabeledTextFieldWidget) { QTextArea textArea = (QTextArea) event.getSource(); if ((textArea.getText() != null && textArea.getText().length() < minLength)) { ClientApplicationContext.getInstance().log("Textarea minimum length check", "The length of this field [" + prompt + "] must be larger than " + minLength, true); } } } }); } } } private void handleMaxLengthAttribute(final TextAreaGVO gvo, UIObject uiObject) { if (gvo.getMaxLength() != null) { final int maxLength = gvo.getMaxLength().intValue(); if (uiObject instanceof QTextArea) { ((QTextArea) uiObject).setMaxlength(gvo.getMaxLength().intValue()); ((QTextArea) uiObject).addKeyPressHandler(new KeyPressHandler() { public void onKeyPress(KeyPressEvent event) { if (event.getCharCode() == KeyCodes.KEY_TAB || event.getCharCode() == KeyCodes.KEY_ENTER) { if (event.getSource() instanceof QTextArea) { QTextArea textArea = (QTextArea) event.getSource(); if ((textArea.getText() != null && textArea.getText().length() > maxLength)) { ClientApplicationContext .getInstance().log( "Textarea maximum length check", "The length of this field [" + gvo.getId() + "] must be smaller than " + maxLength, true); } } } } }); ((QTextArea) uiObject).addBlurHandler(new BlurHandler() { public void onBlur(BlurEvent event) { if (event.getSource() instanceof QTextArea) { QTextArea textArea = (QTextArea) event.getSource(); if ((textArea.getText() != null && textArea.getText().length() > maxLength)) { ClientApplicationContext .getInstance().log( "Textarea maximum length check", "The length of this field [" + gvo.getId() + "] must be smaller than " + maxLength, true); } } } }); } else if (uiObject instanceof LabeledTextFieldWidget) { ((LabeledTextFieldWidget) uiObject).setMaxLength(gvo.getMaxLength().intValue()); final String prompt = ((LabeledTextFieldWidget) uiObject).getLabel().getText(); ((LabeledTextFieldWidget) uiObject).addKeyPressHandler(new KeyPressHandler() { public void onKeyPress(KeyPressEvent event) { if (event.getCharCode() == KeyCodes.KEY_TAB || event.getCharCode() == KeyCodes.KEY_ENTER) { if (event.getSource() instanceof QTextArea) { QTextArea textArea = (QTextArea) event.getSource(); if ((textArea.getText() != null && textArea.getText().length() > maxLength)) { ClientApplicationContext.getInstance().log("Textarea maximum length check", "The length of this field [" + prompt + "] must be smaller than " + maxLength, true); } } } } }); ((LabeledTextFieldWidget) uiObject).addBlurHandler(new BlurHandler() { public void onBlur(BlurEvent event) { if (event.getSource() instanceof LabeledTextFieldWidget) { QTextArea textArea = (QTextArea) event.getSource(); if ((textArea.getText() != null && textArea.getText().length() > maxLength)) { ClientApplicationContext.getInstance().log("Textarea maximum length check", "The length of this field [" + prompt + "] must be smaller than " + maxLength, true); } } } }); } } } }