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Editor.java
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Editor.java
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package org.zanata.webtrans.client.ui;
import org.zanata.webtrans.client.editor.table.EditorTextArea;
import org.zanata.webtrans.client.editor.table.TableResources;
import org.zanata.webtrans.client.editor.table.TargetContentsDisplay;
import org.zanata.webtrans.client.resources.NavigationMessages;
import com.allen_sauer.gwt.log.client.Log;
import com.google.common.base.Strings;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyDownEvent;
import com.google.gwt.event.dom.client.KeyDownHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.PushButton;
import com.google.gwt.user.client.ui.Widget;
public class Editor extends Composite implements ToggleEditor
{
private TargetContentsDisplay.Listener listener;
interface EditorUiBinder extends UiBinder<Widget, Editor>
{
}
private static EditorUiBinder uiBinder = GWT.create(EditorUiBinder.class);
private static final int INITIAL_LINES = 3;
private static final int HEIGHT_PER_LINE = 16;
private final int TYPING_TIMER_INTERVAL = 500; // ms
private final int TYPING_TIMER_RECURRENT_VALIDATION_PERIOD = 5; // intervals
@UiField
HorizontalPanel topContainer;
@UiField
HorizontalPanel bottomContainer;
@UiField
FlowPanel validationMessagePanelContainer;
@UiField
HorizontalPanel buttons;
@UiField
PushButton validateButton, saveButton, fuzzyButton, cancelButton;
@UiField
TableResources images;
@UiField
NavigationMessages messages;
@UiField
EditorTextArea textArea;
@UiField
HighlightingLabel label;
@UiField
PushButton copySourceButton;
private boolean keypressed;
private boolean typing;
private int typingCycles;
public Editor(String displayString, String findMessage, final TargetContentsDisplay.Listener listener)
{
this.listener = listener;
initWidget(uiBinder.createAndBindUi(this));
saveButton.addClickHandler(acceptHandler);
fuzzyButton.addClickHandler(fuzzyHandler);
label.setText(displayString);
if (displayString == null || displayString.isEmpty())
{
label.setText(messages.clickHere());
label.setStylePrimaryName("TableEditorContent-Empty");
}
else
{
label.setText(displayString);
label.setStylePrimaryName("TableEditorContent");
}
if (!Strings.isNullOrEmpty(findMessage))
{
label.highlightSearch(findMessage);
}
label.setTitle(messages.clickHere());
// textArea.setStyleName("TableEditorContent-Edit");
textArea.setVisible(false);
textArea.addValueChangeHandler(new ValueChangeHandler<String>()
{
@Override
public void onValueChange(ValueChangeEvent<String> event)
{
autoSize();
fireValidationEvent();
}
});
final Timer typingTimer = new Timer()
{
@Override
public void run()
{
if (keypressed)
{
// still typing, validate periodically
keypressed = false;
typingCycles++;
if (typingCycles % TYPING_TIMER_RECURRENT_VALIDATION_PERIOD == 0)
{
fireValidationEvent();
}
}
else
{
// finished, validate immediately
this.cancel();
typing = false;
fireValidationEvent();
}
}
};
// used to determine whether user is still typing
textArea.addKeyDownHandler(new KeyDownHandler()
{
@Override
public void onKeyDown(KeyDownEvent event)
{
if (typing)
{
keypressed = true;
}
else
{
// set false so that next keypress is detectable
keypressed = false;
typing = true;
typingCycles = 0;
typingTimer.scheduleRepeating(TYPING_TIMER_INTERVAL);
}
}
});
}
private void fireValidationEvent()
{
if (!Strings.isNullOrEmpty(getContent()))
{
listener.validate(this);
}
}
@UiHandler("copySourceButton")
public void onCopySource(ClickEvent event)
{
listener.copySource(this);
}
@UiHandler("validateButton")
public void onValidation(ClickEvent event)
{
fireValidationEvent();
}
@UiHandler("saveButton")
public void onSaveAsApproved(ClickEvent event)
{
listener.saveAsApproved(this);
event.stopPropagation();
}
@UiHandler("cancelButton")
public void onCancel(ClickEvent event)
{
listener.onCancel(this);
event.stopPropagation();
}
@UiHandler("label")
public void onLabelClick(ClickEvent event)
{
listener.toggleView(this);
// toggleView();
}
@Override
public ViewMode getViewMode()
{
if (label.isVisible())
{
return ViewMode.VIEW;
}
else
{
return ViewMode.EDIT;
}
}
@Override
public void setViewMode(ViewMode viewMode)
{
label.setVisible(viewMode == ViewMode.VIEW);
textArea.setVisible(viewMode == ViewMode.EDIT);
if (viewMode == ViewMode.EDIT)
{
textArea.setFocus(true);
listener.setValidationMessagePanel(this);
fireValidationEvent();
}
buttons.setVisible(viewMode == ViewMode.EDIT);
//sync label and text area
label.setText(textArea.getText());
}
@Override
public void setText(String text)
{
label.setText(text);
textArea.setText(text);
}
@Override
public String getText()
{
return textArea.getText();
}
/**
* The click listener used to save as fuzzy.
*/
private ClickHandler fuzzyHandler = new ClickHandler()
{
public void onClick(ClickEvent event)
{
// acceptFuzzyEdit();
}
};
/**
* The click listener used to accept.
*/
private ClickHandler acceptHandler = new ClickHandler()
{
public void onClick(ClickEvent event)
{
// saveApprovedAndMoveRow(NavigationType.NextEntry);
}
};
@Override
public void setSaveButtonTitle(String title)
{
saveButton.setTitle(title);
}
@Override
public void autoSize()
{
shrinkSize(true);
growSize();
}
/**
* forceShrink will resize the textArea to initialLines(3 lines) and growSize
* according to the scroll height
*
* @param forceShrink
*/
private void shrinkSize(boolean forceShrink)
{
if (forceShrink)
{
textArea.setVisibleLines(INITIAL_LINES);
}
else
{
if (textArea.getElement().getScrollHeight() <= (INITIAL_LINES * HEIGHT_PER_LINE))
{
textArea.setVisibleLines(INITIAL_LINES);
}
else
{
if (textArea.getElement().getScrollHeight() >= textArea.getElement().getClientHeight())
{
int newHeight = textArea.getElement().getScrollHeight() - textArea.getElement().getClientHeight() > 0 ? textArea.getElement().getScrollHeight() - textArea.getElement().getClientHeight() : HEIGHT_PER_LINE;
int newLine = (newHeight / HEIGHT_PER_LINE) - 1 > INITIAL_LINES ? (newHeight / HEIGHT_PER_LINE) - 1 : INITIAL_LINES;
textArea.setVisibleLines(textArea.getVisibleLines() - newLine);
}
growSize();
}
}
}
private String getContent()
{
return textArea.getText();
}
private void growSize()
{
if (textArea.getElement().getScrollHeight() > textArea.getElement().getClientHeight())
{
int newHeight = textArea.getElement().getScrollHeight() - textArea.getElement().getClientHeight();
int newLine = (newHeight / HEIGHT_PER_LINE) + 1;
textArea.setVisibleLines(textArea.getVisibleLines() + newLine);
}
}
@Override
public void addValidationMessagePanel(IsWidget validationMessagePanel)
{
validationMessagePanelContainer.clear();
validationMessagePanelContainer.add(validationMessagePanel);
}
@Override
public void insertTextInCursorPosition(String suggestion)
{
String preCursor = textArea.getText().substring(0, textArea.getCursorPos());
String postCursor = textArea.getText().substring(textArea.getCursorPos(), textArea.getText().length());
textArea.setText(preCursor + suggestion + postCursor);
}
}