I am trying to create a plug-in, which will show local .html file inside internal browser. Currently i am extending class ViewPart, and writing code into its createPartControl method. Most of people are using this snippet
IWebBrowser browser = PlatformUI.getWorkbench().getBrowserSupport().createBrowser("SOMELABEL");
browser.openURL(url);
Problem is that this snippet opens another view where internal browser is opened, but in my case it needs to be in this view...
I also tried other forms of createBrowser method, e.g.
createBrowser(int style, String browserId, String name, String tooltip);
where i tried to configure flags, but all of these options just open another view or editor. Is there a way do draw HTML inside my view?
I have found the solution. Yes i have tried Browser control before, but i did not created Browser properly (wrong arguments). If anybody else tries to implement ViewPart displaying html pages via SWT, here is the code snippet.
public class CustomView extends ViewPart {
private static final String URL = "file:///d:/playground/d3/project.html";
#Override
public void createPartControl(Composite parent) {
final Browser browser = new Browser(parent, SWT.NONE);
browser.setUrl(URL);
}
#Override
public void setFocus() {
}
}
Related
I have a CellList that I want to style. I want to change the cursor style, the ugly color of a selected cell . I checked several questions and discussions on stack overflow,but none of them worked.
I checked these one:
CellList GWT CSS Style
How do I style a gwt 2.1 CellTables headers?
Her is my code:
public interface CellListResource extends CellList.Resources {
public static CellListResource INSTANCE = GWT.create(CellListResource.class);
interface CellListStyle extends CellList.Style {
}
#Source({CellList.Style.DEFAULT_CSS, "CellTableStyle.css"})
CellListStyle style();
}
public SearchViewImpl() {
CompanyCell companyCell = new CompanyCell();
//it doesn't work :S
companiesList = new CellList<Company>(companyCell, CellListResource.INSTANCE);
rootElement = ourUiBinder.createAndBindUi(this);
loadingImage.setVisible(false);
}
Am I missing something? I Cleared Browser cache, Restarted server, F5 F5 F5 .... F5 (pressed refresh again and again) and nothing ...!
Thanks for help in advance.
Besides injecting the CSS it's important that you call the CellListStyle style cellListStyle() and not just style():
public interface CellListResource extends CellList.Resources {
public static CellListResource INSTANCE = GWT.create(CellListResource.class);
interface CellListStyle extends CellList.Style {}
#Override
#Source("cellListStyle.css")
CellListStyle cellListStyle();
}
and then you do
CellListResource.INSTANCE.cellListStyle().ensureInjected();
companiesList = new CellList<Company>(companyCell, CellListResource.INSTANCE);
Make sure you inject the css resource.
CellTableResources.INSTANCE.cellTableStyle().ensureInjected();
myCellTable = new CellTable<T>(Integer.MAX_VALUE,CellTableResources.INSTANCE);
You can follow the following link
How do you change the mouse over highlighting?
I am using GWT 2.4. I have a Suggestbox and I have a requirement to hide the suggestion list under certain cases. The context is as below.
After user selects a suggestion from suggestion list, I am populating two other text box fields, with values corresponding to the selection. For example, suppose the suggestbox contains user-names, and user selects a user-name from suggestions, then other two fields, say user address and email are populated in two other text boxes. These two fields are read only now. Then user clicks on an 'Edit' button. Now the user can edit either user- name ( ie edit in suggestion box), user address and email. It doesn't make sense to show the suggestions again when the user is editing the user-name, since the user has already selected the user and decided to edit it. In a nutshell my SuggesBox should behave as a normal text box. I tried following code, (I know hideSuggestionList() is deprecated) but its not working.
display.getSuggestBox().hideSuggestionList();
Reading the javadoc for hideSuggestionList() it is said that, "Deprecated. use DefaultSuggestionDisplay.hideSuggestions() instead". I don't know how to use DefaultSuggestionDisplay, and I'm using SuggestBox with 'MultiWordSuggestOracle'.
Thanks for helping me out!!
What you can do is simply swap the SuggestionBox with a normal TextBox when the user clicks edit and back when edit is closed. Also because if you would hide the suggestions list, it still queried from the server. By swapping the widget you don't have to care about side effects. SuggestionBox itself uses also a TextBox and thus for the user it's not visible the widget has changed.
If you don't use your own SuggestionDisplay, then this should Just Workâ˘:
((DefaultSuggestionDisplay) suggestBox.getSuggestionDisplay()).hideSuggestions();
Here is the Solution
My Entry Point Class
public class SuggestionEntryPoint implements EntryPoint {
#Override
public void onModuleLoad() {
SuggestBoxWidget suggestBoxWidget = new SuggestBoxWidget();
RootPanel rootPanel = RootPanel.get();
suggestBoxWidget.createOracle();
suggestBoxWidget.createWidgetAndShow(rootPanel);
rootPanel.add(suggestBoxWidget);
DOM.getElementById("loader").removeFromParent();
}
}
And here is my Widget
public class SuggestBoxWidget extends Composite {
private TextBox textSuggestBox = new TextBox();
private SuggestBox suggestBox = null;
DefaultSuggestionDisplay suggestionDisplay = new DefaultSuggestionDisplay();
MultiWordSuggestOracle suggestOracle = new MultiWordSuggestOracle();
private static SuggestBoxWidgetUiBinder uiBinder = GWT
.create(SuggestBoxWidgetUiBinder.class);
interface SuggestBoxWidgetUiBinder extends
UiBinder<Widget, SuggestBoxWidget> {
}
public SuggestBoxWidget() {
initWidget(uiBinder.createAndBindUi(this));
}
public void registerEvents(){
suggestBox.addKeyUpHandler(new KeyUpHandler() {
#Override
public void onKeyUp(KeyUpEvent event) {
if(suggestBox.getText().equalsIgnoreCase("1")){
suggestionDisplay.hideSuggestions();
}
}
});
}
public void createWidgetAndShow(HasWidgets container){
suggestBox = new SuggestBox(suggestOracle,textSuggestBox,suggestionDisplay);
container.clear();
container.add(suggestBox);
registerEvents();
}
public void createOracle(){
for(int i=1;i<=100;i++){
suggestOracle.add(i+"");
}
}
}
Actually you have to create a SuggestBox with 3 Parameters to the Constructor.
I'm trying to implement a hovering HTML help page over a link or widget in a GWT GUI.
I tried to do something similar to change image on hover using gwt and ui-binder and http://examples.roughian.com/index.htm#Listeners~PopupListener
ui.xml
<layout:cell horizontalAlign="LEFT">
<widget:ButtonLink ui:field="manageApps" text="Applications"/>
</layout:cell>
ui.java
PopupPanel popup = new PopupPanel(true);
HTML html = new HTML("<p>Hello</p>");
//popup.setStyleName("demo-popup");
popup.add(html);
#UiHandler("manageApps")
public void onMouseOver(MouseOverEvent event) {
popup.center();
}
However compilation fails on the #UiHandler with the message: Field manageApps doesn't have 'addHandler' method for com...MouseOverHandler.
Any idea or pointer helps. Thanks.
I have a solution so far that can be improved later:
ui.java
#Override
public void onMouseOver(MouseOverEvent mouseOverEvent) {
//To change body of implemented methods use File | Settings | File Templates.
popup.center();
}
manageApps.addHandler(this, MouseOverEvent.getType());
What is a ButtonLink? If you made it yourself, did you implement HasMouseOverHandlers? Chances are the problem is that the widget doesn't know how to throw a MouseOverEvent, but you're trying to catch them anyway.
I have a solution so far that can be improved later:
ui.java
#Override
public void onMouseOver(MouseOverEvent mouseOverEvent) {
//To change body of implemented methods use File | Settings | File Templates.
popup.center();
}
manageApps.addHandler(this, MouseOverEvent.getType());
I'm using GWT 2.4 with JUnit 4.8.1. When writing my class that extends GWTTestCase, I want to simulate clicking on a button on the page. Currently, in my onModuleLoad method, this button is only a local field ...
public void onModuleLoad() {
final Button submitButton = Button.wrap(Document.get().getElementById(SUBMIT_BUTTON_ID));
...
// Add a handler to send the name to the server
GetHtmlHandler handler = new GetHtmlHandler();
submitButton.addClickHandler(handler);
How do I simulate clicking on this button from the GWTTestCase? Do I have to expose this button as a public member accessor is there a more elegant way to access it? Here is what I have in my test case so far ...
public class GetHtmlTest extends GWTTestCase {
// Entry point class of the GWT application being tested.
private Productplus_gwt productPlusModule;
#Override
public String getModuleName() {
return "com.myco.clearing.productplus.Productplus_gwt";
}
#Before
public void prepareTests() {
productPlusModule = new Productplus_gwt();
productPlusModule.onModuleLoad();
} // setUp
#Test
public void testSuccessEvent() {
// TODO: Simulate clicking on button
} // testSuccessEvent
}
Thanks, - Dave
It can be as easy as buttonElement.click() (or ButtonElement.as(buttonWidget.getElement()).click(), or ButtonElement.as(Document.get().getElementById(SUBMIT_BUTTON_ID)).click())
But remember that a GWTTestCase doesn't run in your own HTML host page, but an empty one, so you'll first have to insert your button within the page before simulating your module's load.
gwt-test-utils seems to be the perfect framework to answer your need. Instead of inheriting from GWTTestCase, extend the gwt-test-utils GwtTest class and implement your click test with the Browser class, like shown in the getting starting guide :
#Test
public void checkClickOnSendMoreThan4chars() {
// Arrange
Browser.fillText(app.nameField, "World");
// Act
Browser.click(app.sendButton);
// Assert
assertTrue(app.dialogBox.isShowing());
assertEquals("", app.errorLabel.getText());
assertEquals("Hello, World!", app.serverResponseLabel.getHTML());
assertEquals("Remote Procedure Call", app.dialogBox.getText());
}
If you want to keep your button private, you'd be able to retrieve it by introspection. But my advice is to make you view's widgets package protected and to write your unit test in the same package so it could access them. It's more convinent and refactoring-friendly.
gwt-test-utils provide introspection convinence. For example, to retrieve the "dialogBox" field which could have been private, you could have do this :
DialogBox dialogBox = GwtReflectionUtils.getPrivateFieldValue(app, "dialogBox");
But note that using GwtReflectionUtils is not mandatory. gwt-test-utils allows you to use ANY java classes in GWT client side tests, without restriction :)
You can do it like this:
YourComposite view = new YourComposite();
RootPanel.get().add(view);
view.getSubmitButton.getElement().<ButtonElement>cast().click();
I have a larger application that I'm working with but the GWT History documentation has a simple example that demonstrates the problem. The example is copied for convenience:
public class HistoryTest implements EntryPoint, ValueChangeHandler
{
private Label lbl = new Label();
public void onModuleLoad()
{
Hyperlink link0 = new Hyperlink("link to foo", "foo");
Hyperlink link1 = new Hyperlink("link to bar", "bar");
Hyperlink link2 = new Hyperlink("link to baz", "baz");
String initToken = History.getToken();
if (initToken.length() == 0)
{
History.newItem("baz");
}
// Add widgets to the root panel.
VerticalPanel panel = new VerticalPanel();
panel.add(lbl);
panel.add(link0);
panel.add(link1);
panel.add(link2);
RootPanel.get().add(panel);
History.addValueChangeHandler(this); // Add history listener
History.fireCurrentHistoryState();
}
#Override
public void onValueChange(ValueChangeEvent event)
{
lbl.setText("The current history token is: " + event.getValue());
}
}
The problem is that if you refresh the application, the history stack gets blown away. How do you preserve the history so that if the user refreshes the page, the back button is still useful?
I have just tested it with Firefox and Chrome for my application and page refresh does not clear the history. Which browser do you use? Do you have the
<iframe src="javascript:''" id='__gwt_historyFrame' style='position:absolute;width:0;height:0;border:0'></iframe>
in your HTML?
GWT has catered for this problem by providing the History object. By making a call to it's static method History.newItem("your token"), you will be able to pass a token into your query string.
However you need to be aware that any time there is a history change in a gwt application, the onValueChange(ValueChangeEvent event){} event is fired, and in the method you can call the appropriate pages. Below is a list of steps which i use to solve this problem.
Add a click listener to the object that needs too call a new page. In handling the event add a token to the history.(History.newItem("new_token").
Implement the ValueChangeHandler in the class that implements your EntryPoint.
Add onValueChangeHandler(this) listener to the class that implements the EntryPoint. Ensure that the line is add in the onModuleLoad() method (it is important it is added in this method) of the class that implements the EntryPoint(pretty obvious ha!)
Finally implement onValueChange(ValueChangeEvent event){ //call a new page } method.
That's it