| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.myfaces.tobago.internal.component; |
| |
| import org.apache.myfaces.tobago.component.RendererTypes; |
| import org.apache.myfaces.tobago.component.Tags; |
| import org.apache.myfaces.tobago.component.Visual; |
| import org.apache.myfaces.tobago.layout.AlignItems; |
| import org.apache.myfaces.tobago.layout.Measure; |
| import org.apache.myfaces.tobago.layout.MeasureList; |
| import org.apache.myfaces.tobago.util.ComponentUtils; |
| |
| import javax.faces.component.UIComponent; |
| import javax.faces.context.FacesContext; |
| import javax.faces.event.ComponentSystemEvent; |
| import javax.faces.event.ListenerFor; |
| import javax.faces.event.PostAddToViewEvent; |
| |
| /** |
| * {@link org.apache.myfaces.tobago.internal.taglib.component.FlexLayoutTagDeclaration} |
| * |
| * @since 3.0.0 |
| */ |
| @ListenerFor(systemEventClass = PostAddToViewEvent.class) |
| public abstract class AbstractUIFlexLayout extends AbstractUILayoutBase { |
| |
| public static final String COMPONENT_FAMILY = "org.apache.myfaces.tobago.FlexLayout"; |
| |
| @Override |
| public void processEvent(final ComponentSystemEvent event) { |
| |
| if (event instanceof PostAddToViewEvent) { |
| final FacesContext facesContext = getFacesContext(); |
| |
| final boolean horizontal = isHorizontal(); |
| |
| MeasureList tokens = horizontal ? getColumns() : getRows(); |
| if (tokens == null) { |
| tokens = new MeasureList(); |
| tokens.add(Measure.AUTO); |
| } |
| |
| if (tokens.getSize() > 0) { |
| int i = 0; |
| |
| for (final UIComponent child : getChildren()) { |
| if (child instanceof Visual) { |
| if (i >= tokens.getSize()) { |
| i = 0; |
| } |
| final Measure token = tokens.get(i++); |
| final Measure.Unit unit = token.getUnit(); |
| if (unit != Measure.Unit.AUTO) { |
| AbstractUIStyle style = ComponentUtils.findChild(child, AbstractUIStyle.class); |
| if (style == null) { |
| style = (AbstractUIStyle) facesContext.getApplication().createComponent( |
| facesContext, Tags.style.componentType(), RendererTypes.Style.name()); |
| style.setTransient(true); |
| child.getChildren().add(style); |
| } |
| if (unit == Measure.Unit.FR) { |
| final float factor = token.getValue(); |
| style.setFlexGrow(factor); |
| style.setFlexShrink(0); |
| style.setFlexBasis(Measure.ZERO); |
| // style.setFlexBasis(Measure.AUTO); // is unbalanced when mixing e.g. <p> with <textarea> |
| } else { |
| if (horizontal) { |
| style.setWidth(token); |
| } else { |
| style.setHeight(token); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| public abstract MeasureList getColumns(); |
| |
| public abstract MeasureList getRows(); |
| |
| public abstract AlignItems getAlignItems(); |
| |
| public boolean isHorizontal() { |
| return getRows() == null; |
| } |
| } |