X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.eclipse.ui%2Fsrc%2Forg%2Fargeo%2Feclipse%2Fui%2FEclipseUiUtils.java;h=fad0e0df9910208a0ad1599a85e6459c6334a3bd;hb=1c4bef5a000244060ac042ec210d9906ee672f1d;hp=8e1c7e63210cd34b75caff9b901d6f9bdf0585ec;hpb=e61dd9dda88354091625cca85aa7c96d196688b3;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/EclipseUiUtils.java b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/EclipseUiUtils.java
index 8e1c7e632..fad0e0df9 100644
--- a/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/EclipseUiUtils.java
+++ b/org.argeo.eclipse.ui/src/org/argeo/eclipse/ui/EclipseUiUtils.java
@@ -19,21 +19,118 @@ import org.eclipse.jface.resource.JFaceResources;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.graphics.Font;
+import org.eclipse.swt.layout.FormAttachment;
+import org.eclipse.swt.layout.FormData;
 import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 
 /** Utilities to simplify UI development. */
 public class EclipseUiUtils {
+
+	/** Dispose all children of a Composite */
+	public static void clear(Composite composite) {
+		for (Control child : composite.getChildren())
+			child.dispose();
+	}
+
 	/**
-	 * Create a label and a text field for a grid layout, the text field grabing
-	 * excess horizontal
+	 * Enables efficient call to the layout method of a composite, refreshing
+	 * only some of the children controls.
+	 */
+	public static void layout(Composite parent, Control... toUpdateControls) {
+		parent.layout(toUpdateControls);
+	}
+
+	//
+	// FONTS
+	//
+	/** Shortcut to retrieve default italic font from display */
+	public static Font getItalicFont(Composite parent) {
+		return JFaceResources.getFontRegistry().defaultFontDescriptor()
+				.setStyle(SWT.ITALIC).createFont(parent.getDisplay());
+	}
+
+	/** Shortcut to retrieve default bold font from display */
+	public static Font getBoldFont(Composite parent) {
+		return JFaceResources.getFontRegistry().defaultFontDescriptor()
+				.setStyle(SWT.BOLD).createFont(parent.getDisplay());
+	}
+
+	/** Shortcut to retrieve default bold italic font from display */
+	public static Font getBoldItalicFont(Composite parent) {
+		return JFaceResources.getFontRegistry().defaultFontDescriptor()
+				.setStyle(SWT.BOLD | SWT.ITALIC)
+				.createFont(parent.getDisplay());
+	}
+
+	//
+	// Simplify grid layouts management
+	//
+	public static GridLayout noSpaceGridLayout() {
+		return noSpaceGridLayout(new GridLayout());
+	}
+
+	public static GridLayout noSpaceGridLayout(GridLayout layout) {
+		layout.horizontalSpacing = 0;
+		layout.verticalSpacing = 0;
+		layout.marginWidth = 0;
+		layout.marginHeight = 0;
+		return layout;
+	}
+
+	public static GridData fillWidth() {
+		return grabWidth(SWT.FILL, SWT.FILL);
+	}
+
+	public static GridData fillWidth(int colSpan) {
+		GridData gd = grabWidth(SWT.FILL, SWT.FILL);
+		gd.horizontalSpan = colSpan;
+		return gd;
+	}
+
+	public static GridData fillAll() {
+		return new GridData(SWT.FILL, SWT.FILL, true, true);
+	}
+
+	public static GridData fillAll(int colSpan, int rowSpan) {
+		return new GridData(SWT.FILL, SWT.FILL, true, true, colSpan, rowSpan);
+	}
+
+	public static GridData grabWidth(int horizontalAlignment,
+			int verticalAlignment) {
+		return new GridData(horizontalAlignment, horizontalAlignment, true,
+				false);
+	}
+
+	//
+	// Simplify Form layout management
+	//
+
+	/**
+	 * Creates a basic form data that is attached to the 4 corners of the parent
+	 * composite
+	 */
+	public static FormData fillFormData() {
+		FormData formData = new FormData();
+		formData.top = new FormAttachment(0, 0);
+		formData.left = new FormAttachment(0, 0);
+		formData.right = new FormAttachment(100, 0);
+		formData.bottom = new FormAttachment(100, 0);
+		return formData;
+	}
+
+	/**
+	 * Create a label and a text field for a grid layout, the text field
+	 * grabbing excess horizontal
 	 * 
 	 * @param parent
 	 *            the parent composite
 	 * @param label
-	 *            the lable to display
+	 *            the label to display
 	 * @param modifyListener
 	 *            a {@link ModifyListener} to listen on events on the text, can
 	 *            be null
@@ -64,7 +161,7 @@ public class EclipseUiUtils {
 	}
 
 	/**
-	 * Creates one label and a text field not editable with background color of
+	 * Creates one label and a text field not editable with background colour of
 	 * the parent (like a label but with selectable text)
 	 */
 	public static Text createGridLL(Composite parent, String label, String text) {
@@ -79,6 +176,15 @@ public class EclipseUiUtils {
 	 * Create a label and a text field with password display for a grid layout,
 	 * the text field grabbing excess horizontal
 	 */
+	public static Text createGridLP(Composite parent, String label) {
+		return createGridLP(parent, label, null);
+	}
+
+	/**
+	 * Create a label and a text field with password display for a grid layout,
+	 * the text field grabbing excess horizontal. The given modify listener will
+	 * be added to the newly created text field if not null.
+	 */
 	public static Text createGridLP(Composite parent, String label,
 			ModifyListener modifyListener) {
 		Label lbl = new Label(parent, SWT.LEAD);
@@ -86,27 +192,20 @@ public class EclipseUiUtils {
 		lbl.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false));
 		Text txt = new Text(parent, SWT.LEAD | SWT.BORDER | SWT.PASSWORD);
 		txt.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
-		if (txt != null)
+		if (modifyListener != null)
 			txt.addModifyListener(modifyListener);
 		return txt;
 	}
 
-	/** Shortcut to retrieve default italic font from display */
-	public static Font getItalicFont(Composite parent) {
-		return JFaceResources.getFontRegistry().defaultFontDescriptor()
-				.setStyle(SWT.ITALIC).createFont(parent.getDisplay());
-	}
+	// MISCELLANEOUS
 
-	/** Shortcut to retrieve default bold font from display */
-	public static Font getBoldFont(Composite parent) {
-		return JFaceResources.getFontRegistry().defaultFontDescriptor()
-				.setStyle(SWT.BOLD).createFont(parent.getDisplay());
+	/** Simply checks if a string is not null nor empty */
+	public static boolean notEmpty(String stringToTest) {
+		return !(stringToTest == null || "".equals(stringToTest.trim()));
 	}
 
-	/** Shortcut to retrieve default bold italic font from display */
-	public static Font getBoldItalicFont(Composite parent) {
-		return JFaceResources.getFontRegistry().defaultFontDescriptor()
-				.setStyle(SWT.BOLD | SWT.ITALIC)
-				.createFont(parent.getDisplay());
+	/** Simply checks if a string is null or empty */
+	public static boolean isEmpty(String stringToTest) {
+		return stringToTest == null || "".equals(stringToTest.trim());
 	}
 }
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