|
| 1 | +/* |
| 2 | + * #%L |
| 3 | + * GwtMaterial |
| 4 | + * %% |
| 5 | + * Copyright (C) 2015 - 2022 GwtMaterialDesign |
| 6 | + * %% |
| 7 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | + * you may not use this file except in compliance with the License. |
| 9 | + * You may obtain a copy of the License at |
| 10 | + * |
| 11 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | + * |
| 13 | + * Unless required by applicable law or agreed to in writing, software |
| 14 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | + * See the License for the specific language governing permissions and |
| 17 | + * limitations under the License. |
| 18 | + * #L% |
| 19 | + */ |
| 20 | +package gwt.material.design.client.base; |
| 21 | + |
| 22 | +import com.google.gwt.dom.client.Style; |
| 23 | +import com.google.gwt.event.dom.client.ClickEvent; |
| 24 | +import com.google.gwt.event.shared.HandlerRegistration; |
| 25 | +import com.google.gwt.user.client.ui.Widget; |
| 26 | +import gwt.material.design.client.base.mixin.ToggleStyleMixin; |
| 27 | +import gwt.material.design.client.constants.Display; |
| 28 | +import gwt.material.design.client.constants.IconType; |
| 29 | +import gwt.material.design.client.ui.*; |
| 30 | + |
| 31 | +import java.util.List; |
| 32 | + |
| 33 | +import static gwt.material.design.client.js.JsMaterialElement.$; |
| 34 | + |
| 35 | +public class DefaultMoreChipHandler implements MoreChipHandler { |
| 36 | + |
| 37 | + protected int visibleChipsSize = 0; |
| 38 | + protected MaterialLink more = new MaterialLink(); |
| 39 | + protected String localizedMoreText = "Show {0} more items"; |
| 40 | + protected MaterialChipContainer container; |
| 41 | + protected ToggleStyleMixin<MaterialChipContainer> toggleStyleMixin; |
| 42 | + protected HandlerRegistration handlerRegistration; |
| 43 | + protected MaterialLabel collapseLabel = new MaterialLabel(); |
| 44 | + protected MaterialIcon collapseIcon = new MaterialIcon(IconType.KEYBOARD_ARROW_UP); |
| 45 | + protected ToggleStyleMixin<Widget> collapsibleMixin; |
| 46 | + protected ToggleStyleMixin<Widget> collapseMixin; |
| 47 | + |
| 48 | + public DefaultMoreChipHandler(MaterialChipContainer container) { |
| 49 | + this.container = container; |
| 50 | + more.setDisplay(Display.BLOCK); |
| 51 | + more.setMarginLeft(4); |
| 52 | + more.setMarginTop(12); |
| 53 | + } |
| 54 | + |
| 55 | + @Override |
| 56 | + public void setVisibleChipsSize(int visibleChipsSize) { |
| 57 | + this.visibleChipsSize = visibleChipsSize; |
| 58 | + } |
| 59 | + |
| 60 | + @Override |
| 61 | + public void load() { |
| 62 | + showHiddenChips(false); |
| 63 | + collapseIcon.addStyleName("collapse"); |
| 64 | + collapseLabel.addStyleName("collapse-label"); |
| 65 | + collapseIcon.addClickHandler(this::toggle); |
| 66 | + collapseLabel.addClickHandler(this::toggle); |
| 67 | + if (!collapseIcon.isAttached()) { |
| 68 | + collapseIcon.setVisible(false); |
| 69 | + collapseLabel.setVisible(false); |
| 70 | + container.add(collapseIcon); |
| 71 | + container.add(collapseLabel); |
| 72 | + } |
| 73 | + } |
| 74 | + |
| 75 | + public void collapse() { |
| 76 | + getCollapseMixin().setOn(true); |
| 77 | + } |
| 78 | + |
| 79 | + public void expand() { |
| 80 | + getCollapseMixin().setOn(false); |
| 81 | + } |
| 82 | + |
| 83 | + public void setCollapsible(boolean enableCollapsible) { |
| 84 | + getCollapsibleMixin().setOn(enableCollapsible); |
| 85 | + } |
| 86 | + |
| 87 | + protected void toggle(ClickEvent event) { |
| 88 | + if (!getCollapseMixin().isOn()) { |
| 89 | + collapse(); |
| 90 | + } else { |
| 91 | + expand(); |
| 92 | + } |
| 93 | + event.stopPropagation(); |
| 94 | + event.preventDefault(); |
| 95 | + } |
| 96 | + |
| 97 | + @Override |
| 98 | + public void reload() { |
| 99 | + showHiddenChips(false); |
| 100 | + } |
| 101 | + |
| 102 | + @Override |
| 103 | + public void update(MaterialChip chip) { |
| 104 | + if (getCollapseMixin().isOn()) { |
| 105 | + MaterialIcon icon = chip.getIcon(); |
| 106 | + icon.registerHandler(icon.addClickHandler(clickEvent -> updateCollapseLabel(chip))); |
| 107 | + updateCollapseLabel(chip); |
| 108 | + } |
| 109 | + } |
| 110 | + |
| 111 | + protected void updateCollapseLabel(MaterialChip chip) { |
| 112 | + int length = $(container.getElement()).find(".chip").length(); |
| 113 | + collapseIcon.setVisible(length > 0); |
| 114 | + collapseLabel.setVisible(length > 0); |
| 115 | + collapseLabel.setText(length + ""); |
| 116 | + } |
| 117 | + |
| 118 | + public void showHiddenChips(boolean showHiddenChips) { |
| 119 | + if (visibleChipsSize > 0) { |
| 120 | + if (handlerRegistration == null) { |
| 121 | + handlerRegistration = more.addClickHandler(clickEvent -> showHiddenChips(!getToggleStyleMixin().isOn())); |
| 122 | + } |
| 123 | + if (!more.isAttached()) { |
| 124 | + container.add(more); |
| 125 | + } |
| 126 | + List<MaterialChip> chipList = container.getChipList(); |
| 127 | + int hiddenChipsSize = chipList.size() - visibleChipsSize; |
| 128 | + for (MaterialChip widgets : chipList) { |
| 129 | + if (showHiddenChips) { |
| 130 | + $(widgets.getElement()).css("display", "block"); |
| 131 | + } else { |
| 132 | + if (chipList.indexOf(widgets) > visibleChipsSize) { |
| 133 | + $(widgets.getElement()).css("display", "none"); |
| 134 | + } |
| 135 | + } |
| 136 | + } |
| 137 | + |
| 138 | + if (showHiddenChips) { |
| 139 | + more.setVisibility(Style.Visibility.HIDDEN); |
| 140 | + } else { |
| 141 | + more.setVisibility(Style.Visibility.VISIBLE); |
| 142 | + more.setText(localizedMoreText.replace("{0}", hiddenChipsSize + "")); |
| 143 | + } |
| 144 | + } |
| 145 | + } |
| 146 | + |
| 147 | + public ToggleStyleMixin<Widget> getCollapseMixin() { |
| 148 | + if (collapseMixin == null) { |
| 149 | + collapseMixin = new ToggleStyleMixin<>(container, "collapse"); |
| 150 | + } |
| 151 | + return collapseMixin; |
| 152 | + } |
| 153 | + |
| 154 | + public ToggleStyleMixin<Widget> getCollapsibleMixin() { |
| 155 | + if (collapsibleMixin == null) { |
| 156 | + collapsibleMixin = new ToggleStyleMixin<>(container, "enable-collapsible"); |
| 157 | + } |
| 158 | + return collapsibleMixin; |
| 159 | + } |
| 160 | + |
| 161 | + public ToggleStyleMixin<MaterialChipContainer> getToggleStyleMixin() { |
| 162 | + if (toggleStyleMixin == null) { |
| 163 | + toggleStyleMixin = new ToggleStyleMixin<>(container, "expanded"); |
| 164 | + } |
| 165 | + return toggleStyleMixin; |
| 166 | + } |
| 167 | +} |
0 commit comments