Add getTitle method

lib/sequence-diagram-web.js

@@ -10362,6 +10362,7 @@
 				generator: SharedGenerator,
 				isInteractive: false,
 				latestProcessed: null,
+				latestTitle: '',
 				parser: SharedParser,
 				registerCodeMirrorMode,
 				renderer: new Renderer(Object.assign({
@@ -10527,6 +10528,10 @@
 			};
 		}
 
+		getTitle() {
+			return this.latestTitle;
+		}
+
 		_revertParent(state) {
 			const dom = this.renderer.dom();
 			if(dom.parentNode !== state.originalParent) {
@@ -10563,6 +10568,10 @@
 				if(!state.processed) {
 					state.processed = this.process(this.code);
 				}
+				const titleParts = state.processed.meta.title || [];
+				this.latestTitle = titleParts
+					.map((ln) => ln.map((p) => p.text).join(''))
+					.join(' ');
 				this.renderer.optimisedRenderPreReflow(state.processed);
 			} catch(e) {
 				this._sendRenderError(e);

lib/sequence-diagram.js

@@ -10362,6 +10362,7 @@
 				generator: SharedGenerator,
 				isInteractive: false,
 				latestProcessed: null,
+				latestTitle: '',
 				parser: SharedParser,
 				registerCodeMirrorMode,
 				renderer: new Renderer(Object.assign({
@@ -10527,6 +10528,10 @@
 			};
 		}
 
+		getTitle() {
+			return this.latestTitle;
+		}
+
 		_revertParent(state) {
 			const dom = this.renderer.dom();
 			if(dom.parentNode !== state.originalParent) {
@@ -10563,6 +10568,10 @@
 				if(!state.processed) {
 					state.processed = this.process(this.code);
 				}
+				const titleParts = state.processed.meta.title || [];
+				this.latestTitle = titleParts
+					.map((ln) => ln.map((p) => p.text).join(''))
+					.join(' ');
 				this.renderer.optimisedRenderPreReflow(state.processed);
 			} catch(e) {
 				this._sendRenderError(e);

library.htm

@@ -679,6 +679,17 @@ Returns an object containing <code>width</code> and <code>height</code>
 properties, corresponding to the size of the diagram in units.
 </p>
 
+<h3 id="API_getTitle">.getTitle</h3>
+
+<pre data-lang="javascript">
+title = diagram.getTitle();
+</pre>
+
+<p>
+Returns the document title as a string. All formatting is lost, and
+newlines are replaced with spaces. Returns a blank string if no title is set.
+</p>
+
 <h3 id="API_setContainer">.setContainer</h3>
 
 <pre data-lang="javascript">

scripts/sequence/SequenceDiagram.mjs

@@ -92,6 +92,7 @@ export default class SequenceDiagram extends EventObject {
 			generator: SharedGenerator,
 			isInteractive: false,
 			latestProcessed: null,
+			latestTitle: '',
 			parser: SharedParser,
 			registerCodeMirrorMode,
 			renderer: new Renderer(Object.assign({
@@ -257,6 +258,10 @@ export default class SequenceDiagram extends EventObject {
 		};
 	}
 
+	getTitle() {
+		return this.latestTitle;
+	}
+
 	_revertParent(state) {
 		const dom = this.renderer.dom();
 		if(dom.parentNode !== state.originalParent) {
@@ -293,6 +298,10 @@ export default class SequenceDiagram extends EventObject {
 			if(!state.processed) {
 				state.processed = this.process(this.code);
 			}
+			const titleParts = state.processed.meta.title || [];
+			this.latestTitle = titleParts
+				.map((ln) => ln.map((p) => p.text).join(''))
+				.join(' ');
 			this.renderer.optimisedRenderPreReflow(state.processed);
 		} catch(e) {
 			this._sendRenderError(e);

scripts/sequence/SequenceDiagram_spec.mjs

@@ -185,4 +185,10 @@ describe('SequenceDiagram', () => {
 		expect(svg).toContain('<?xml version="1.0" encoding="UTF-8" ?>');
 		expect(svg).toContain('<svg width="');
 	});
+
+	it('makes the raw title text available', () => {
+		const diagram = makeDiagram('title "foo **bold**\nbar"');
+
+		expect(diagram.getTitle()).toEqual('foo bold bar');
+	});
 });

web/scripts/interface/Interface_spec.mjs

@@ -15,6 +15,7 @@ describe('Interface', () => {
 			'render',
 			'clone',
 			'getSize',
+			'getTitle',
 			'process',
 			'getThemeNames',
 			'on',
@@ -28,6 +29,7 @@ describe('Interface', () => {
 		});
 		sequenceDiagram.on.and.returnValue(sequenceDiagram);
 		sequenceDiagram.getSize.and.returnValue({height: 20, width: 10});
+		sequenceDiagram.getTitle.and.returnValue('');
 		sequenceDiagram.dom.and.returnValue(dom.createElement('svg'));
 		container = dom.createElement('div');