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SimpleTree.java 5.6KB

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  1. /*
  2. * Copyright 2000-2014 Vaadin Ltd.
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  5. * use this file except in compliance with the License. You may obtain a copy of
  6. * the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  12. * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  13. * License for the specific language governing permissions and limitations under
  14. * the License.
  15. */
  16. package com.vaadin.client;
  17. import com.google.gwt.dom.client.Document;
  18. import com.google.gwt.dom.client.SpanElement;
  19. import com.google.gwt.dom.client.Style;
  20. import com.google.gwt.dom.client.Style.Cursor;
  21. import com.google.gwt.dom.client.Style.Display;
  22. import com.google.gwt.dom.client.Style.TextAlign;
  23. import com.google.gwt.dom.client.Style.Unit;
  24. import com.google.gwt.event.dom.client.ClickEvent;
  25. import com.google.gwt.event.dom.client.ClickHandler;
  26. import com.google.gwt.event.dom.client.DoubleClickEvent;
  27. import com.google.gwt.event.dom.client.DoubleClickHandler;
  28. import com.google.gwt.event.dom.client.HasDoubleClickHandlers;
  29. import com.google.gwt.event.shared.HandlerManager;
  30. import com.google.gwt.event.shared.HandlerRegistration;
  31. import com.google.gwt.user.client.Element;
  32. import com.google.gwt.user.client.ui.ComplexPanel;
  33. import com.google.gwt.user.client.ui.Label;
  34. import com.google.gwt.user.client.ui.Widget;
  35. /**
  36. * @author Vaadin Ltd
  37. *
  38. * @deprecated as of 7.1. This class was mainly used by the old debug console
  39. * but is retained for now for backwards compatibility.
  40. */
  41. @Deprecated
  42. public class SimpleTree extends ComplexPanel implements HasDoubleClickHandlers {
  43. private Element children = Document.get().createDivElement().cast();
  44. private SpanElement handle = Document.get().createSpanElement();
  45. private SpanElement text = Document.get().createSpanElement();
  46. private HandlerManager textDoubleClickHandlerManager;
  47. public SimpleTree() {
  48. setElement(Document.get().createDivElement());
  49. Style style = getElement().getStyle();
  50. style.setProperty("whiteSpace", "nowrap");
  51. style.setPadding(3, Unit.PX);
  52. style.setPaddingLeft(12, Unit.PX);
  53. // handle styling
  54. style = handle.getStyle();
  55. style.setDisplay(Display.NONE);
  56. style.setTextAlign(TextAlign.CENTER);
  57. style.setWidth(0.5, Unit.EM);
  58. style.setHeight(0.5, Unit.EM);
  59. style.setCursor(Cursor.POINTER);
  60. style.setBackgroundColor("gray");
  61. style.setColor("white");
  62. style.setPadding(4, Unit.PX);
  63. style.setMarginRight(3, Unit.PX);
  64. style.setLineHeight(0.5, Unit.EM);
  65. handle.setInnerHTML("+");
  66. getElement().appendChild(handle);
  67. getElement().appendChild(text);
  68. // children styling
  69. style = children.getStyle();
  70. style.setPaddingLeft(1.5, Unit.EM);
  71. style.setDisplay(Display.NONE);
  72. getElement().appendChild(children);
  73. addDomHandler(new ClickHandler() {
  74. @Override
  75. public void onClick(ClickEvent event) {
  76. if (event.getNativeEvent().getEventTarget().cast() == handle) {
  77. if (children.getStyle().getDisplay().intern() == Display.NONE
  78. .getCssName()) {
  79. open(event.getNativeEvent().getAltKey());
  80. } else {
  81. close();
  82. }
  83. } else if (event.getNativeEvent().getEventTarget().cast() == text) {
  84. select(event);
  85. }
  86. }
  87. }, ClickEvent.getType());
  88. }
  89. protected void select(ClickEvent event) {
  90. }
  91. public void close() {
  92. children.getStyle().setDisplay(Display.NONE);
  93. handle.setInnerHTML("+");
  94. }
  95. public void open(boolean recursive) {
  96. handle.setInnerHTML("-");
  97. children.getStyle().setDisplay(Display.BLOCK);
  98. if (recursive) {
  99. for (Widget w : getChildren()) {
  100. if (w instanceof SimpleTree) {
  101. SimpleTree str = (SimpleTree) w;
  102. str.open(true);
  103. }
  104. }
  105. }
  106. }
  107. public SimpleTree(String caption) {
  108. this();
  109. setText(caption);
  110. }
  111. public void setText(String text) {
  112. this.text.setInnerText(text);
  113. }
  114. public void addItem(String text) {
  115. Label label = new Label(text);
  116. add(label, children);
  117. }
  118. @Override
  119. public void add(Widget child) {
  120. add(child, children);
  121. }
  122. @Override
  123. protected void add(Widget child, Element container) {
  124. super.add(child, container);
  125. handle.getStyle().setDisplay(Display.INLINE_BLOCK);
  126. getElement().getStyle().setPaddingLeft(3, Unit.PX);
  127. }
  128. /**
  129. * {@inheritDoc} Events are not fired when double clicking child widgets.
  130. */
  131. @Override
  132. public HandlerRegistration addDoubleClickHandler(DoubleClickHandler handler) {
  133. if (textDoubleClickHandlerManager == null) {
  134. textDoubleClickHandlerManager = new HandlerManager(this);
  135. addDomHandler(new DoubleClickHandler() {
  136. @Override
  137. public void onDoubleClick(DoubleClickEvent event) {
  138. if (event.getNativeEvent().getEventTarget().cast() == text) {
  139. textDoubleClickHandlerManager.fireEvent(event);
  140. }
  141. }
  142. }, DoubleClickEvent.getType());
  143. }
  144. return textDoubleClickHandlerManager.addHandler(
  145. DoubleClickEvent.getType(), handler);
  146. }
  147. }