OO-2124 Add auto-resize option to rich text editor to optimize paragraph part in eportfolio

src/main/java/org/olat/core/gui/components/form/flexible/impl/elements/richText/RichTextConfiguration.java

@@ -112,6 +112,11 @@ public class RichTextConfiguration implements Disposable {
 	private static final String FORCED_ROOT_BLOCK_VALUE_NOROOT = "";
 	private static final String DOCUMENT_BASE_URL = "document_base_url";
 	private static final String PASTE_DATA_IMAGES = "paste_data_images";
+	private static final String AUTORESIZE_BOTTOM_MARGIN = "autoresize_bottom_margin";
+	private static final String AUTORESIZE_MAX_HEIGHT = "autoresize_max_height";
+	private static final String AUTORESIZE_MIN_HEIGHT = "autoresize_min_height";
+	private static final String AUTORESIZE_OVERFLOW_PADDING = "autoresize_overflow_padding";
+
 	//
 	// Generic boolean true / false values
 	private static final String VALUE_FALSE = "false";
@@ -573,6 +578,37 @@ public class RichTextConfiguration implements Disposable {
 		}
 	}
 
+
+	/**
+	 * Enable / disable the auto-resizing of the text input field. When enabled,
+	 * the editor will expand the input filed until the maxHeight is reached (if
+	 * set)
+	 * 
+	 * @param autoResizeEnabled true: enable auto-resize; false: no auto-resize (default)
+	 * @param maxHeight value of max height in pixels or -1 to indicate infinite height
+	 * @param minHeight value of min height in pixels or -1 to indicate no minimum height
+	 * @param bottomMargin value of bottom margin below or -1 to use html editor default
+	 */
+	public void setAutoResizeEnabled(boolean autoResizeEnabled, int maxHeight, int minHeight, int bottomMargin) {
+		if (autoResizeEnabled) {
+			this.tinyConfig = this.tinyConfig.enableAutoResize();
+			if (maxHeight > -1) {
+				setNonQuotedConfigValue(AUTORESIZE_MAX_HEIGHT, Integer.toString(maxHeight));
+			}
+			if (minHeight > -1) {
+				setNonQuotedConfigValue(AUTORESIZE_MIN_HEIGHT, Integer.toString(minHeight));				
+			}
+			if (bottomMargin > -1) {
+				setNonQuotedConfigValue(AUTORESIZE_BOTTOM_MARGIN, Integer.toString(bottomMargin));				
+			}
+		} else {
+			this.tinyConfig = this.tinyConfig.disableAutoResize();
+			
+		}
+	}
+	
+
+	
 	/**
 	 * Enable / disable the date and time insert plugin
 	 * 

src/main/java/org/olat/core/gui/components/form/flexible/impl/elements/richText/TinyConfig.java

@@ -133,7 +133,15 @@ public class TinyConfig {
 	public TinyConfig enableCode() {
 		return enableFeature("code");
 	}
-	
+
+	public TinyConfig enableAutoResize() {
+		return enableFeature("autoresize");
+	}
+
+	public TinyConfig disableAutoResize() {
+		return disableFeature("autoresize");
+	}
+
 	public TinyConfig enableImageAndMedia() {
 		return enableFeature("image")
 				.enableFeature("media")

src/main/java/org/olat/modules/portfolio/ui/editor/HTMLRawEditorController.java

@@ -79,6 +79,7 @@ public class HTMLRawEditorController extends FormBasicController implements Page
 		htmlItem = uifactory.addRichTextElementForStringDataCompact(cmpId, null, content, 8, 80, null, formLayout, ureq.getUserSession(), getWindowControl());
 		htmlItem.getEditorConfiguration().setSendOnBlur(true);
 		htmlItem.getEditorConfiguration().disableImageAndMovie();
+		htmlItem.getEditorConfiguration().setAutoResizeEnabled(true, -1, 40, 0);
 		
 		String formattedContent = Formatter.formatLatexFormulas(content);
 		staticItem = uifactory.addStaticTextElement(cmpId + "_static", formattedContent, formLayout);