Example usage for com.google.gwt.event.dom.client KeyDownHandler KeyDownHandler

Introduction

In this page you can find the example usage for com.google.gwt.event.dom.client KeyDownHandler KeyDownHandler.

Prototype

KeyDownHandler

Source Link

Usage

From source file:ar.com.kyol.jet.client.wrappers.FloatBox.java

License:Open Source License

/**
 * Instantiates a new float box.//from   w  w w .j  a v a 2s.  c om
 * 
 * @param maximumFractionDigits - 1 or more digits
 * @param acceptNegatives - true if you want to allow the minus sign
 */
public FloatBox(final int maximumFractionDigits, final boolean acceptNegatives) {
    sinkEvents(Event.ONPASTE);
    //addKeyPressHandler(new KeyPressHandler() {
    addKeyDownHandler(new KeyDownHandler() {

        @Override
        //public void onKeyPress(KeyPressEvent event) { //GWT bug: Issue 5558:    KeyPressEvent.getCharCode returns zero for special keys like enter, escape, tab
        public void onKeyDown(KeyDownEvent event) {

            switch (event.getNativeKeyCode()) {
            case KeyCodes.KEY_LEFT:
            case KeyCodes.KEY_DOWN:
            case KeyCodes.KEY_RIGHT:
            case KeyCodes.KEY_UP:
            case KeyCodes.KEY_BACKSPACE:
            case KeyCodes.KEY_DELETE:
            case KeyCodes.KEY_TAB:
            case KeyCodes.KEY_HOME:
            case KeyCodes.KEY_END:
                return;
            }

            if (event.getNativeKeyCode() == 109 || event.getNativeKeyCode() == 189) { //minus sign or dash
                if ((getCursorPos() != 0) || getValue().contains("-") || !acceptNegatives) {
                    ((TextBoxBase) event.getSource()).cancelKey();
                } else {
                    return;
                }
            }

            if (event.getNativeKeyCode() == 188 || event.getNativeKeyCode() == 190
                    || event.getNativeKeyCode() == 110) { //comma, point and decimal separator
                //TODO internationalization!!! use com.google.gwt.i18n.client.LocaleInfo.getNumberConstants().decimalSeparator()
                if (getValue().contains(".")) {
                    ((TextBoxBase) event.getSource()).cancelKey();
                } else {
                    if (getCursorPos() < getValue().length() - maximumFractionDigits) {
                        ((TextBoxBase) event.getSource()).cancelKey();
                    } else {
                        return;
                    }
                }
            }

            if (((event.getNativeKeyCode() < 48 || event.getNativeKeyCode() > 57) && //numeric keys
            (event.getNativeKeyCode() < 96 || event.getNativeKeyCode() > 105)) //numeric pad
                    || event.isAnyModifierKeyDown() || event.isAltKeyDown()) {
                ((TextBoxBase) event.getSource()).cancelKey();
            } else {
                if (getValue().contains(".")) {
                    int cursorPos = getCursorPos();
                    int posicionPunto = getValue().indexOf(".");
                    int longitudTexto = getValue().length();
                    if (cursorPos > posicionPunto
                            && longitudTexto >= posicionPunto + 1 + maximumFractionDigits) {
                        ((TextBoxBase) event.getSource()).cancelKey();
                    }
                }
            }

        }
    });
}

---

From source file:ar.com.kyol.jet.client.wrappers.NumericBox.java

License:Open Source License

/**
 * Instantiates a new numeric box.//ww  w. ja v a  2 s .  c  o  m
 * <i>allowNegative</i> allows the minus sign.
 */
public NumericBox(final boolean allowNegative) {
    sinkEvents(Event.ONPASTE);
    //addKeyPressHandler(new KeyPressHandler() {
    addKeyDownHandler(new KeyDownHandler() {

        @Override
        //public void onKeyPress(KeyPressEvent event) { //GWT bug: Issue 5558:    KeyPressEvent.getCharCode returns zero for special keys like enter, escape, tab
        public void onKeyDown(KeyDownEvent event) {

            switch (event.getNativeKeyCode()) {
            case KeyCodes.KEY_LEFT:
            case KeyCodes.KEY_DOWN:
            case KeyCodes.KEY_RIGHT:
            case KeyCodes.KEY_UP:
            case KeyCodes.KEY_BACKSPACE:
            case KeyCodes.KEY_DELETE:
            case KeyCodes.KEY_TAB:
            case KeyCodes.KEY_HOME:
            case KeyCodes.KEY_END:
                return;
            }

            if (event.getNativeKeyCode() == 109 || event.getNativeKeyCode() == 189) { //minus sign or dash
                if ((getCursorPos() != 0) || getValue().contains("-") || !allowNegative) {
                    ((TextBoxBase) event.getSource()).cancelKey();
                } else {
                    return;
                }
            }

            if ((event.getNativeKeyCode() >= 96 && event.getNativeKeyCode() <= 105)) { //numeric pad!
                return;
            }

            //FIXME shift!!!   
            if (event.getNativeKeyCode() < 48 || event.getNativeKeyCode() > 57 || event.isAnyModifierKeyDown()
                    || event.isAltKeyDown()) { //numeric keys
                ((TextBoxBase) event.getSource()).cancelKey();
            }

        }
    });
}

---

From source file:at.ait.dme.yuma.client.map.annotation.TagEnabledMapAnnotationForm.java

License:EUPL

@Override
protected KeyDownHandler createKeyDownHandler(ImageAnnotationComposite annotationComposite) {
    return new KeyDownHandler() {
        @Override//from w w w.j  a  v  a2s. c o  m
        public void onKeyDown(KeyDownEvent event) {
            if (event.getNativeKeyCode() == ' ' || event.getNativeKeyCode() == KeyCodes.KEY_BACKSPACE) {
                enrichmentService.getTagSuggestions(textArea.getValue(), WHICH_ENRICHMENT_SERVICE,
                        new AsyncCallback<Collection<SemanticTagGroup>>() {
                            @Override
                            public void onSuccess(Collection<SemanticTagGroup> result) {
                                for (SemanticTagGroup group : result) {
                                    for (SemanticTag tag : group.getAmbiguousTags()) {
                                        lAnnotations.modifyTagCloud(new SemanticTag[] { tag });
                                    }
                                }
                            }

                            @Override
                            public void onFailure(Throwable t) {
                                ErrorMessages errorMessages = (ErrorMessages) GWT.create(ErrorMessages.class);
                                MessageBox.error(errorMessages.error(), t.getMessage());
                            }
                        });
            }
        }
    };
}

---

From source file:burrito.client.crud.widgets.CrudRichTextArea.java

License:Apache License

public CrudRichTextArea(String value) {
    textArea = new FormattedRichTextArea();
    textArea.setHTML(value);/*from  ww  w. j  a v a 2s  .co  m*/
    formatter = textArea.getFormatter();
    richTextDock.add(createCommandsArea(), DockPanel.NORTH);
    textArea.addKeyDownHandler(new KeyDownHandler() {

        public void onKeyDown(KeyDownEvent event) {
            toggleButtons();
            checkForKeyBoardCombinations(event);
        }
    });
    textArea.addClickHandler(new ClickHandler() {

        public void onClick(ClickEvent event) {
            toggleButtons();
        }
    });
    textAreaWrapper.setWidget(textArea);
    richTextDock.add(textAreaWrapper, DockPanel.CENTER);
    HTML richTextHeader = new HTML(labels.richText());
    richTextHeader.addClickHandler(new ClickHandler() {

        public void onClick(ClickEvent event) {
            if (rawVisible) {
                textArea.setHTML(raw.getText());
                textAreaWrapper.clear();
                textAreaWrapper.setWidget(textArea);
            }
            rawVisible = false;
        }
    });
    tabPanel.add(richTextDock, richTextHeader);
    HTML rawHeader = new HTML(labels.rawHtml());
    rawHeader.addClickHandler(new ClickHandler() {

        public void onClick(ClickEvent event) {
            if (!rawVisible) {
                raw.setText(textArea.getHTML());
            }
            rawVisible = true;
        }
    });
    tabPanel.add(raw, rawHeader);

    imagePicker = new ImagePickerPopup(800, 800, false);
    imagePicker.addSaveHandler(new ImagePickerPopup.SaveHandler() {

        public void saved(String value) {
            formatter.insertImage("/blobstore/image?key=" + value);
        }
    });

    wrapper.add(tabPanel);

    ToggleButton maximize = new ToggleButton(labels.maximize(), labels.minimize());
    maximize.addClickHandler(new ClickHandler() {
        boolean max = false;

        public void onClick(ClickEvent event) {
            if (max) {
                raw.setSize("400px", "250px");
                textArea.setSize("400px", "250px");

            } else {
                raw.setSize("800px", "440px");
                textArea.setSize("800px", "440px");
            }
            max = !max;
        }
    });
    maximize.setWidth("80px");
    wrapper.add(maximize);
    initWidget(wrapper);
    addStyleName("k5-CrudRichTextArea");
    raw.setSize("400px", "250px");
    textArea.setSize("400px", "250px");
    tabPanel.selectTab(0);
}

---

From source file:burrito.client.widgets.ExpandingTextArea.java

License:Apache License

public ExpandingTextArea() {
    addKeyDownHandler(new KeyDownHandler() {

        @Override/*  w ww  . j  av  a  2  s.com*/
        public void onKeyDown(KeyDownEvent event) {
            if (event.getNativeKeyCode() == KeyCodes.KEY_ENTER) {
                updateHeight(true);
            }
        }
    });
    addKeyUpHandler(new KeyUpHandler() {

        @Override
        public void onKeyUp(KeyUpEvent event) {
            if (event.getNativeKeyCode() == KeyCodes.KEY_BACKSPACE
                    || event.getNativeKeyCode() == KeyCodes.KEY_DELETE) {
                updateHeight(false);
            }
        }
    });
}

---

From source file:ch.takoyaki.email.html.client.ui.generic.ClosableTabLayoutPanel.java

License:Open Source License

private void renameAction(final IsWidget content, final FlowPanel hpanel, final InlineHTML titlew,
        final Widget closeButton) {
    hpanel.clear();/*  w w  w .j av a2  s. c o m*/
    final TextBox tb = new TextBox();
    tb.addStyleName("tabrename");
    final String originalText = titlew.getText();
    tb.setText(originalText);

    tb.addKeyDownHandler(new KeyDownHandler() {

        @Override
        public void onKeyDown(KeyDownEvent event) {

            boolean enterPressed = KeyCodes.KEY_ENTER == event.getNativeEvent().getKeyCode();
            boolean escapePressed = KeyCodes.KEY_ESCAPE == event.getNativeEvent().getKeyCode();

            if (enterPressed) {
                if (renameTabEventHandler != null) {
                    if (renameTabEventHandler.onRename(ClosableTabLayoutPanel.this,
                            getTab().getWidgetIndex(content), originalText, tb.getText())) {
                        titlew.setText(tb.getText());
                    } else {
                        titlew.setHTML(originalText);
                    }
                } else {
                    titlew.setText(tb.getText());
                }
            }
            if (escapePressed) {
                titlew.setHTML(originalText);
            }

            if (enterPressed || escapePressed) {
                hpanel.clear();
                hpanel.add(titlew);
                hpanel.add(closeButton);
            }
        }
    });
    hpanel.add(tb);
    tb.selectAll();
    titlew.setHTML("");
}

---

From source file:ch.unifr.pai.twice.widgets.client.RemoteTextBox.java

License:Apache License

/**
 * Define a static, unique identifier for this text box. This is needed for
 * the linkage between the different clients. Make sure that this value is
 * not composed dynamically - the best is a usage of a simple string not
 * coming from any other method.//ww w  .  j  a v a 2  s. com
 * 
 * @param uniqueIdentifier
 */
public RemoteTextBox(String uniqueIdentifier, ServerPushEventBus eventBus) {
    super();
    this.uniqueIdentifier = uniqueIdentifier;
    this.eventBus = eventBus;
    this.interpreter = new RemoteTextInputInterpreter(new Command() {

        @Override
        public void execute() {
            updateState();
        }
    }, eventBus, uniqueIdentifier);

    addKeyDownHandler(new KeyDownHandler() {

        @Override
        public void onKeyDown(KeyDownEvent event) {
            tmpNativeCursor = getCursorPos();
            tmpLocalValue = getValue();
        }
    });
    addKeyUpHandler(new KeyUpHandler() {

        @Override
        public void onKeyUp(KeyUpEvent event) {
            final String newValue = getValue();
            final String oldValue = tmpLocalValue.toString();
            final int cursorPos = getCursorPos();
            // Make sure, that the event has been interpreted by the textbox
            calculateDifferenceAndFire(oldValue, newValue, cursorPos);
        }
    });
}

---

From source file:cl.uai.client.chat.ChatInterface.java

License:Open Source License

/**
 * Creates a new chat interface/*from  w ww .j  ava2s . c  o  m*/
 */
public ChatInterface() {

    this.source = NodeChat.SOURCE_CHAT;

    this.addStyleName(Resources.INSTANCE.css().chatdialog());

    // Dialog parameters
    this.setAutoHideEnabled(false);
    this.setAnimationEnabled(true);
    this.setModal(false);
    this.setHTML(MarkingInterface.messages.Chat());

    // Initialize interfaces and assign css
    messagesPanel = new VerticalPanel();
    messagesPanel.addStyleName(Resources.INSTANCE.css().chatmessages());

    scrollMessagesPanel = new ScrollPanel(messagesPanel);
    scrollMessagesPanel.addStyleName(Resources.INSTANCE.css().chatscrollmessages());
    scrollMessagesPanel.scrollToBottom();

    usersConnectedPanel = new ConnectedUsersPanel();

    sendMessageTextArea = new TextArea();
    sendMessageTextArea.setVisibleLines(2);
    sendMessageTextArea.addStyleName(Resources.INSTANCE.css().chatTextarea());

    // KeyDown for text area for sending message
    sendMessageTextArea.addKeyDownHandler(new KeyDownHandler() {

        @Override
        public void onKeyDown(KeyDownEvent event) {
            if (event.getNativeKeyCode() == KeyCodes.KEY_ENTER) {
                event.stopPropagation();
                String msg = sendMessageTextArea.getValue();
                msg = msg.replace("\n", "");
                sendMessage(msg);
                sendMessageTextArea.setValue(null);
            }
        }
    });

    // Vertical panel that contains everything
    mainPanel = new VerticalPanel();
    mainPanel.addStyleName(Resources.INSTANCE.css().chatmainpanel());

    mainPanel.add(usersConnectedPanel);
    mainPanel.setCellHorizontalAlignment(usersConnectedPanel, HasAlignment.ALIGN_CENTER);
    mainPanel.add(scrollMessagesPanel);
    mainPanel.add(sendMessageTextArea);

    closeButton = new Button(MarkingInterface.messages.Close());
    closeButton.addClickHandler(new ClickHandler() {
        @Override
        public void onClick(ClickEvent event) {
            hide();
        }
    });

    mainPanel.add(closeButton);
    mainPanel.setCellHorizontalAlignment(closeButton, HasAlignment.ALIGN_RIGHT);

    timer = new Timer() {
        @Override
        public void run() {
            for (int i = 0; i < messagesPanel.getWidgetCount(); i++) {
                if (messagesPanel.getWidget(i) instanceof ChatMessage) {
                    ChatMessage chatMessage = (ChatMessage) messagesPanel.getWidget(i);
                    chatMessage.updateElapsedTime();
                }
            }
        }
    };

    timer.scheduleRepeating(1000 * 60); // Every minute

    this.setWidget(mainPanel);
}

---

From source file:com.alkacon.acacia.client.widgets.StringWidget.java

License:Open Source License

/**
 * @see com.google.gwt.event.logical.shared.HasValueChangeHandlers#addValueChangeHandler(com.google.gwt.event.logical.shared.ValueChangeHandler)
 *//*from  w  w w .j ava2s .com*/
@Override
public HandlerRegistration addValueChangeHandler(ValueChangeHandler<String> handler) {

    // Initialization code
    if (!m_valueChangeHandlerInitialized) {
        m_valueChangeHandlerInitialized = true;
        addDomHandler(new KeyDownHandler() {

            /** The text selection range. */
            protected JavaScriptObject m_range;

            /** The Element of this widget. */
            protected com.google.gwt.dom.client.Element m_element;

            /** Helper text area to store the text that should be pasted. */
            protected TextArea m_helpfield;

            public void onKeyDown(KeyDownEvent event) {

                // check if something was pasted to the field
                if (event.isShiftKeyDown() || event.isControlKeyDown()) {
                    int charCode = event.getNativeEvent().getCharCode();
                    if ((charCode == 'v') || (charCode == 45)) {
                        m_helpfield = new TextArea();
                        m_helpfield.getElement().getStyle().setPosition(Position.FIXED);
                        m_range = getSelection();
                        m_element = event.getRelativeElement();
                        m_element.setAttribute("contentEditable", "false");
                        RootPanel.get().add(m_helpfield);
                        m_helpfield.setFocus(true);
                    }
                }
                // prevent adding line breaks
                if (KeyCodes.KEY_ENTER == event.getNativeEvent().getKeyCode()) {
                    event.preventDefault();
                    event.stopPropagation();
                }

                // schedule the change event, so the key press can take effect
                Scheduler.get().scheduleDeferred(new ScheduledCommand() {

                    public void execute() {

                        if (m_range != null) {
                            String pasteValue = m_helpfield.getText();
                            m_helpfield.removeFromParent();
                            m_element.setAttribute("contentEditable", "true");
                            setFocus(true);
                            setSelection(m_range, pasteValue);
                            m_range = null;

                        }
                        fireValueChange(false);
                    }
                });
            }

        }, KeyDownEvent.getType());

        addDomHandler(new ChangeHandler() {

            public void onChange(ChangeEvent event) {

                fireValueChange(false);

            }
        }, ChangeEvent.getType());
        addDomHandler(new BlurHandler() {

            public void onBlur(BlurEvent event) {

                fireValueChange(false);
            }
        }, BlurEvent.getType());
    }
    return addHandler(handler, ValueChangeEvent.getType());
}

---

From source file:com.areahomeschoolers.baconbits.client.content.calendar.InteractiveWidget.java

License:Open Source License

public InteractiveWidget() {

    initWidget(rootPanel);//from  w  w w . j  av  a 2  s .  c o  m

    // Sink events, mouse and keyboard for now
    sinkEvents(Event.ONMOUSEDOWN | Event.ONDBLCLICK | Event.KEYEVENTS | Event.ONMOUSEOVER);

    hideFocusPanel();

    // Add key handler events to the focus panel
    focusPanel.addKeyPressHandler(new KeyPressHandler() {
        @Override
        public void onKeyPress(KeyPressEvent event) {
            if (!lastWasKeyDown) {
                keyboardNavigation(event.getNativeEvent().getKeyCode());
            }
            lastWasKeyDown = false;
        }
    });

    focusPanel.addKeyUpHandler(new KeyUpHandler() {
        @Override
        public void onKeyUp(KeyUpEvent event) {
            lastWasKeyDown = false;
        }
    });
    focusPanel.addKeyDownHandler(new KeyDownHandler() {
        @Override
        public void onKeyDown(KeyDownEvent event) {
            keyboardNavigation(event.getNativeEvent().getKeyCode());
            lastWasKeyDown = true;
        }
    });
}

---

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