private static final String CLASSNAME_PROMPT = "prompt";
private static final String ATTR_INPUTPROMPT = "prompt";
+ private static final String VAR_CURSOR = "c";
private String inputPrompt = null;
private boolean prompting = false;
+ private int lastCursorPos = -1;
public VTextField() {
this(DOM.createInputText());
}
valueBeforeEdit = uidl.getStringVariable("text");
+
+ if (uidl.hasAttribute("selpos")) {
+ final int pos = uidl.getIntAttribute("selpos");
+ final int length = uidl.getIntAttribute("sellen");
+ /*
+ * Gecko defers setting the text so we need to defer the selection.
+ */
+ DeferredCommand.addCommand(new Command() {
+ public void execute() {
+ setSelectionRange(pos, length);
+ }
+ });
+ }
}
private void setMaxLength(int newMaxLength) {
valueBeforeEdit = newText;
}
+ /*
+ * also send cursor position, no public api yet but for easier
+ * extension
+ */
+ updateCursorPosition();
+
if (sendBlurEvent || sendValueChange) {
client.sendPendingVariableChanges();
}
}
}
+ /**
+ * Updates the cursor position variable if it has changed since the last
+ * update.
+ *
+ * @return true iff the value was updated
+ */
+ protected boolean updateCursorPosition() {
+ int cursorPos = getCursorPos();
+ if (lastCursorPos != cursorPos) {
+ client.updateVariable(id, VAR_CURSOR, cursorPos, false);
+ lastCursorPos = cursorPos;
+ return true;
+ } else {
+ return false;
+ }
+ }
+
private static VTextField focusedTextField;
public static void flushChangesFromFocusedTextField() {
*/
private int maxLength = -1;
+ private int selectionPosition = -1;
+
+ private int selectionLength;
+
/* Constructors */
/**
if (inputPrompt != null) {
target.addAttribute("prompt", inputPrompt);
}
+ if (selectionPosition != -1) {
+ target.addAttribute("selpos", selectionPosition);
+ target.addAttribute("sellen", selectionLength);
+ selectionPosition = -1;
+ }
// Adds the number of column and rows
final int columns = getColumns();
removeListener(BlurEvent.EVENT_ID, BlurEvent.class, listener);
}
+ /**
+ * Selects all text in the field.
+ *
+ * @since 6.4
+ */
+ public void selectAll() {
+ String text = getValue() == null ? "" : getValue().toString();
+ setSelectionRange(0, text.length());
+ }
+
+ /**
+ * Sets the range of text to be selected.
+ *
+ * As a side effect the field will become focused.
+ *
+ * @since 6.4
+ *
+ * @param pos
+ * the position of the first character to be selected
+ * @param length
+ * the number of characters to be selected
+ */
+ public void setSelectionRange(int pos, int length) {
+ selectionPosition = pos;
+ selectionLength = length;
+ focus();
+ requestRepaint();
+ }
+
+ /**
+ * Sets the cursor position in the field. As a side effect the field will
+ * become focused.
+ *
+ * @since 6.4
+ *
+ * @param pos
+ * the position for the cursor
+ * */
+ public void setCursorPosition(int pos) {
+ setSelectionRange(pos, 0);
+ }
+
}
--- /dev/null
+package com.vaadin.tests.components.textfield;
+
+import com.vaadin.data.Property;
+import com.vaadin.data.Property.ValueChangeEvent;
+import com.vaadin.tests.components.TestBase;
+import com.vaadin.ui.Button;
+import com.vaadin.ui.CheckBox;
+import com.vaadin.ui.FormLayout;
+import com.vaadin.ui.HorizontalLayout;
+import com.vaadin.ui.Panel;
+import com.vaadin.ui.TextField;
+import com.vaadin.ui.Button.ClickEvent;
+import com.vaadin.ui.Button.ClickListener;
+
+public class SelectionAndCursorPosition extends TestBase {
+
+ TextField tf = new TextField();
+
+ @Override
+ protected void setup() {
+
+ tf.setCaption("Text field");
+ tf.setValue("So we have some text to select");
+ tf.setWidth("400px");
+
+ FormLayout fl = new FormLayout();
+ Panel panel = new Panel(fl);
+ panel.setCaption("Hackers panel");
+ CheckBox ml = new CheckBox("Multiline");
+ ml.setImmediate(true);
+ ml.addListener(new Property.ValueChangeListener() {
+ public void valueChange(ValueChangeEvent event) {
+ if (tf.getHeight() < 0) {
+ tf.setHeight("50px");
+ } else {
+ tf.setSizeUndefined();
+ tf.setRows(0);
+ }
+ tf.setWidth("400px");
+ }
+ });
+ fl.addComponent(ml);
+
+ Button b = new Button("Select all ( selectAll() )");
+ b.addListener(new ClickListener() {
+ public void buttonClick(ClickEvent event) {
+ tf.selectAll();
+ }
+ });
+ fl.addComponent(b);
+
+ HorizontalLayout selectRange = new HorizontalLayout();
+ selectRange
+ .setCaption("Select range of text ( setSelectionRange(int start, int lengt) )");
+ final TextField start = new TextField("From:");
+ final TextField length = new TextField("Selection length:");
+ b = new Button("select");
+ b.addListener(new ClickListener() {
+ public void buttonClick(ClickEvent event) {
+ int startPos = Integer.parseInt((String) start.getValue());
+ int lenght = Integer.parseInt((String) length.getValue());
+ tf.setSelectionRange(startPos, lenght);
+ }
+ });
+
+ selectRange.addComponent(start);
+ selectRange.addComponent(length);
+ selectRange.addComponent(b);
+ fl.addComponent(selectRange);
+
+ HorizontalLayout setCursorPosition = new HorizontalLayout();
+ final TextField pos = new TextField("Position:");
+ b = new Button("set");
+ b.addListener(new ClickListener() {
+ public void buttonClick(ClickEvent event) {
+ int startPos = Integer.parseInt((String) pos.getValue());
+ tf.setCursorPosition(startPos);
+ }
+ });
+
+ setCursorPosition.addComponent(pos);
+ setCursorPosition.addComponent(b);
+ setCursorPosition
+ .setCaption("Set cursor position ( setCursorPosition(int pos) )");
+ fl.addComponent(setCursorPosition);
+
+ getLayout().addComponent(tf);
+ getLayout().addComponent(panel);
+
+ }
+
+ @Override
+ protected String getDescription() {
+ return "For usability reasons it is often essential that developer "
+ + "can hint how to select the text in the "
+ + "field or where to set the cursor position.";
+ }
+
+ @Override
+ protected Integer getTicketNumber() {
+ return 2058;
+ }
+
+}
projects / vaadin-framework.git / commitdiff