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POEclipse RCP: Generating views from form values
 

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  1. POEclipse RCP: Generating views from form values
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    <p>I want to build a user interface similar to the sketch below:</p> <p><a href="http://i39.tinypic.com/288uvz8.png" rel="nofollow noreferrer">sketch http://i39.tinypic.com/288uvz8.png</a></p> <p>When the user fills out the form on the right and clicks the 'Plot!' button, a new closeable tab opens on the left with a chart.</p> <p>I am new to RCP and have been following <a href="http://www.vogella.de/articles/RichClientPlatform/article.html" rel="nofollow noreferrer">this tutorial</a>. I am able to bring up tabs with charts triggered from a menu item. How do I go about:</p> <ol> <li>creating the tab (view?) with the form</li> <li>open a new chart tab when the user clicks the button</li> </ol> <p><strong>Edit</strong></p> <p>Here is my current code. It satisfies the basic requirements outlined in this question, but I am not sure if that is the best approach. I would be delighted if someone here can guide me in the right direction.</p> <p>A view with the form; the button's listener invokes a command.</p> <pre><code>public class FormView extends ViewPart { public static final String ID = FormView.class.getPackage().getName() + ".Form"; private FormToolkit toolkit; private Form form; public Text text; @Override public void createPartControl(Composite parent) { toolkit = new FormToolkit(parent.getDisplay()); form = toolkit.createForm(parent); form.setText("Pie Chucker"); GridLayout layout = new GridLayout(); form.getBody().setLayout(layout); layout.numColumns = 2; GridData gd = new GridData(); gd.horizontalSpan = 2; Label label = new Label(form.getBody(), SWT.NULL); label.setText("Chart Title:"); text = new Text(form.getBody(), SWT.BORDER); text.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); Button button = new Button(form.getBody(), SWT.PUSH); button.setText("Plot"); gd = new GridData(); gd.horizontalSpan = 2; button.setLayoutData(gd); button.addMouseListener(new MouseAdapter() { @Override public void mouseDown(MouseEvent e) { IHandlerService handlerService = (IHandlerService) getSite() .getService(IHandlerService.class); try { handlerService.executeCommand(ShowChartHandler.ID, null); } catch (Exception ex) { throw new RuntimeException(ShowChartHandler.ID + " not found"); } } }); } @Override public void setFocus() { } } </code></pre> <p>The command invoked by the button from the form. This opens a new view with a chart.</p> <pre><code>public class ShowChartHandler extends AbstractHandler implements IHandler { public static final String ID = ShowChartHandler.class.getPackage().getName() + ".ShowChart"; private int count = 0; @Override public Object execute(ExecutionEvent event) throws ExecutionException { IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindow(event); try { window.getActivePage().showView(ChartView.ID, String.valueOf(++count), IWorkbenchPage.VIEW_ACTIVATE); } catch (PartInitException e) { e.printStackTrace(); } return null; } } </code></pre> <p>The view with the chart. It looks up the form view and reads a value from a text field in the form (?!):</p> <pre><code>public class ChartView extends ViewPart { public static final String ID = ChartView.class.getPackage().getName() + ".Chart"; private static final Random random = new Random(); public ChartView() { // TODO Auto-generated constructor stub } @Override public void createPartControl(Composite parent) { FormView form = (FormView) Workbench.getInstance() .getActiveWorkbenchWindow() .getActivePage() .findView(FormView.ID); String title = form == null? null : form.text.getText(); if (title == null || title.trim().length() == 0) { title = "Pie Chart"; } setPartName(title); JFreeChart chart = createChart(createDataset(), title); new ChartComposite(parent, SWT.NONE, chart, true); } @Override public void setFocus() { // TODO Auto-generated method stub } /** * Creates the Dataset for the Pie chart */ private PieDataset createDataset() { Double[] nums = getRandomNumbers(); DefaultPieDataset dataset = new DefaultPieDataset(); dataset.setValue("One", nums[0]); dataset.setValue("Two", nums[1]); dataset.setValue("Three", nums[2]); dataset.setValue("Four", nums[3]); dataset.setValue("Five", nums[4]); dataset.setValue("Six", nums[5]); return dataset; } private Double[] getRandomNumbers() { Double[] nums = new Double[6]; int sum = 0; for (int i = 0; i &lt; 5; i++) { int r = random.nextInt(20); nums[i] = new Double(r); sum += r; } nums[5] = new Double(100 - sum); return nums; } /** * Creates the Chart based on a dataset */ private JFreeChart createChart(PieDataset dataset, String title) { JFreeChart chart = ChartFactory.createPieChart(title, // chart title dataset, // data true, // include legend true, false); PiePlot plot = (PiePlot) chart.getPlot(); plot.setSectionOutlinesVisible(false); plot.setLabelFont(new Font("SansSerif", Font.PLAIN, 12)); plot.setNoDataMessage("No data available"); plot.setCircular(false); plot.setLabelGap(0.02); return chart; } } </code></pre> <p>The perspective that ties it all together:</p> <pre><code>public class Perspective implements IPerspectiveFactory { public void createInitialLayout(IPageLayout layout) { layout.setEditorAreaVisible(false); layout.addStandaloneView(FormView.ID, false, IPageLayout.RIGHT, 0.3f, IPageLayout.ID_EDITOR_AREA); IFolderLayout charts = layout.createFolder("Charts", IPageLayout.LEFT, 0.7f, FormView.ID); charts.addPlaceholder(ChartView.ID + ":*"); } } </code></pre>
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    1. COAre the tabs on the left full eclipse views or are all of the tabs and the form in a single eclipse view? If they are in a single view then what class are you currently using to create the tabs on the left?
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    2. COI would like all tabs to be separate views. BY using RCP I am hoping to get away from writing code to implement functionality people expect in a decent desktop app - like docking tabs, being able to tile them side-by-side etc.
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