--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2012 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.browsing.ui.swt.contentassist;\r
+\r
+import java.util.ArrayList;\r
+import java.util.List;\r
+\r
+import org.eclipse.swt.SWT;\r
+import org.eclipse.swt.widgets.Composite;\r
+import org.eclipse.swt.widgets.Event;\r
+import org.eclipse.swt.widgets.Listener;\r
+import org.eclipse.swt.widgets.TreeItem;\r
+import org.simantics.browsing.ui.NodeContext;\r
+import org.simantics.browsing.ui.common.modifiers.EnumeratedValue;\r
+import org.simantics.browsing.ui.common.modifiers.Enumeration;\r
+import org.simantics.browsing.ui.content.Labeler.CustomModifier;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+abstract public class AbstractContentAssistModifier<T> implements CustomModifier {\r
+\r
+ protected final Enumeration<T> enumeration;\r
+ protected final T value;\r
+\r
+ protected ContentAssistTextField text;\r
+\r
+ public AbstractContentAssistModifier(Enumeration<T> enumeration, T value) {\r
+ if (enumeration == null)\r
+ throw new NullPointerException("null enumeration");\r
+ if (enumeration.size() == 0)\r
+ throw new IllegalArgumentException("");\r
+\r
+ this.enumeration = enumeration;\r
+ this.value = value;\r
+ }\r
+\r
+ @Override\r
+ public String getValue() {\r
+ if (value != null)\r
+ return value.toString();\r
+ return enumeration.values().get(0).getName();\r
+ }\r
+\r
+ @Override\r
+ public String isValid(String label) {\r
+ if (enumeration.findByName(label) == null)\r
+ return "Value '" + label + "' is not among the enumerated values " + enumeration.values();\r
+ return null;\r
+ }\r
+\r
+ @Override\r
+ public void modify(String label) {\r
+ String error = isValid(label); \r
+ if(error != null)\r
+ throw new IllegalArgumentException(error);\r
+ modifyWithValue(this.value, label);\r
+ }\r
+\r
+ abstract void modifyWithValue(T oldEnumValue, String enumValue);\r
+\r
+ /**\r
+ * Override to customize the content assist proposal objects created from\r
+ * the enumerated values.\r
+ * \r
+ * @param value\r
+ * @return\r
+ */\r
+ protected NamedObject<T> createNamedObject(EnumeratedValue<T> value) {\r
+ return new NamedObject<T>(value.getObject(), value.getName());\r
+ }\r
+\r
+ protected List<NamedObject<T>> toNamedObjects(Enumeration<T> enumeration) {\r
+ List<NamedObject<T>> namedObjects = new ArrayList<NamedObject<T>>();\r
+ for (EnumeratedValue<T> v : enumeration.values())\r
+ namedObjects.add(createNamedObject(v));\r
+ return namedObjects;\r
+ }\r
+\r
+ @Override\r
+ public Object createControl(Object parentControl, Object controlItem, final int columnIndex, NodeContext context) {\r
+ Composite parent = (Composite) parentControl;\r
+ final TreeItem item = (TreeItem) controlItem;\r
+\r
+ List<NamedObject<T>> possibleValues = toNamedObjects(enumeration);\r
+ \r
+ EnumeratedValue<T> enuValue = enumeration.find(value);\r
+ \r
+ NamedObject<T> selectedValue = enuValue != null ? createNamedObject(enuValue) : null;\r
+\r
+ text = new ContentAssistTextField(parent, selectedValue, possibleValues, SWT.NONE);\r
+\r
+ Listener textListener = new Listener() {\r
+ String error;\r
+\r
+ @Override\r
+ public void handleEvent(final Event e) {\r
+ switch (e.type) {\r
+ case SWT.Modify: {\r
+ String newText = text.getControl().getText();\r
+// System.out.println("VALIDATE NEW TEXT: " + newText);\r
+ error = isValid(newText);\r
+ if (error != null) {\r
+ text.getControl().setBackground(text.getDisplay().getSystemColor(SWT.COLOR_RED));\r
+// System.out.println("validation error: " + error);\r
+ } else {\r
+ text.getControl().setBackground(null);\r
+ }\r
+// text.getDisplay().asyncExec(new Runnable() {\r
+// @Override\r
+// public void run() {\r
+ //if (!text.getControl().isDisposed())\r
+ //text.getControl().traverse(SWT.TRAVERSE_ARROW_NEXT);\r
+ //text.getControl().setSelection(text.getControl().getCaretPosition());\r
+// }\r
+// });\r
+ break;\r
+ }\r
+ case SWT.Verify:\r
+ // Safety check since it seems that this may happen with\r
+ // virtual trees.\r
+// if (item.isDisposed())\r
+// return;\r
+\r
+// newText = text.getControl().getText();\r
+// String leftText = newText.substring(0, e.start);\r
+// String rightText = newText.substring(e.end, newText.length());\r
+// GC gc = new GC(text.getControl());\r
+// Point size = gc.textExtent(leftText + e.text + rightText);\r
+// gc.dispose();\r
+// size = text.getControl().computeSize(size.x, SWT.DEFAULT);\r
+// Rectangle itemRect = item.getBounds(columnIndex),\r
+// rect = tree.getClientArea();\r
+// editor.minimumWidth = Math.max(size.x, itemRect.width) + insetX * 2;\r
+// int left = itemRect.x,\r
+// right = rect.x + rect.width;\r
+// editor.minimumWidth = Math.min(editor.minimumWidth, right - left);\r
+// editor.minimumHeight = size.y + insetY * 2;\r
+// editor.layout();\r
+ break;\r
+// case SWT.FocusOut: {\r
+// System.out.println("focus out");\r
+// String t = text.getControl().getText();\r
+// modify(t);\r
+//\r
+// // Item may be disposed if the tree gets reset after a previous editing.\r
+// if (!item.isDisposed()) {\r
+// item.setText(columnIndex, t);\r
+// //queueSelectionRefresh(context);\r
+// }\r
+// text.dispose();\r
+// break;\r
+// }\r
+ case SWT.Traverse: {\r
+ //System.out.println(AbstractContentAssistEnumerationModifier.class.getSimpleName() + " TRAVERSE: " + e.detail);\r
+ switch (e.detail) {\r
+ case SWT.TRAVERSE_RETURN:\r
+ //System.out.println("TRAVERSE: RETURN");\r
+ INamedObject obj = text.getResult();\r
+ String txt = obj != null ? obj.getName() : text.getControl().getText();\r
+ if (txt == null || error != null) {\r
+ e.doit = false;\r
+ return;\r
+ }\r
+ modify(txt);\r
+ if (!item.isDisposed()) {\r
+ item.setText(columnIndex, txt);\r
+ //queueSelectionRefresh(context);\r
+ }\r
+ // FALL THROUGH\r
+ case SWT.TRAVERSE_ESCAPE:\r
+ //System.out.println("TRAVERSE: ESCAPE");\r
+ text.dispose();\r
+ e.doit = false;\r
+ break;\r
+ default:\r
+ //System.out.println("unhandled traversal: " + e.detail);\r
+ break;\r
+ }\r
+ break;\r
+ }\r
+ }\r
+ }\r
+ };\r
+ text.getControl().addListener(SWT.Modify, textListener);\r
+// text.getControl().addListener(SWT.Verify, textListener);\r
+// text.getControl().addListener(SWT.FocusOut, textListener);\r
+ text.getControl().addListener(SWT.Traverse, textListener);\r
+\r
+ text.setFocus();\r
+ text.text.selectAll();\r
+ text.getDisplay().asyncExec(new Runnable() {\r
+ @Override\r
+ public void run() {\r
+ if (!text.isDisposed())\r
+ text.openAssist();\r
+ }\r
+ });\r
+\r
+ return text;\r
+ }\r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff