Implement constraints in web UI

html/index.html

@@ -139,12 +139,12 @@
 							<input type="text" id="txtSeed" value="">
 						</label>
 					</div>
-					<!--<div class="subheading">
+					<div class="subheading">
 						Constraints:
 					</div>
 					<div>
 						<input type="file" id="conFile">
-					</div>-->
+					</div>
 				</div>
 				<div class="col-6 cols-12" style="align-self: start;">
 					<div class="col-12 subheading">

html/index.js

@@ -90,11 +90,22 @@ async function clickCount() {
 	}
 	
 	// Read BLT file
-	let filePath = document.getElementById('bltFile').value;
+	let bltPath = document.getElementById('bltFile').value;
-	filePath = filePath.substring(Math.max(filePath.lastIndexOf('\\'), filePath.lastIndexOf('/')) + 1);
+	bltPath = bltPath.substring(Math.max(bltPath.lastIndexOf('\\'), bltPath.lastIndexOf('/')) + 1);
 	
 	let bltFile = document.getElementById('bltFile').files[0];
-	let electionData = await bltFile.text();
+	let bltData = await bltFile.text();
+	
+	// Read CON file (if applicable)
+	let conPath = null;
+	let conData = null;
+	if (document.getElementById('conFile').files.length > 0) {
+		conPath = document.getElementById('conFile').value;
+		conPath = conPath.substring(Math.max(conPath.lastIndexOf('\\'), conPath.lastIndexOf('/')) + 1);
+		
+		let conFile = document.getElementById('conFile').files[0];
+		conData = await conFile.text();
+	}
 	
 	// Init STV options
 	let optsStr = [
@@ -127,9 +138,11 @@ async function clickCount() {
 	// Dispatch to worker
 	worker.postMessage({
 		'type': 'countElection',
-		'electionData': electionData,
+		'bltData': bltData,
+		'conData': conData,
 		'optsStr': optsStr,
-		'filePath': filePath,
+		'bltPath': bltPath,
+		'conPath': conPath,
 		'numbers': document.getElementById('selNumbers').value,
 		'decimals': document.getElementById('txtDP').value,
 		'normaliseBallots': document.getElementById('chkNormaliseBallots').checked,

html/worker.js

@@ -27,12 +27,17 @@ onmessage = function(evt) {
 		}
 		
 		// Init election
-		election = wasm['election_from_blt_' + numbers](evt.data.electionData);
+		election = wasm['election_from_blt_' + numbers](evt.data.bltData);
 		
 		if (evt.data.normaliseBallots) {
 			wasm['election_normalise_ballots_' + numbers](election);
 		}
 		
+		// Init constraints if applicable
+		if (evt.data.conData) {
+			wasm['election_load_constraints_' + numbers](election, evt.data.conData);
+		}
+		
 		// Init STV options
 		opts = wasm.STVOptions.new.apply(null, evt.data.optsStr);
 		
@@ -40,7 +45,7 @@ onmessage = function(evt) {
 		opts.validate();
 		
 		// Describe count
-		postMessage({'type': 'describeCount', 'content': wasm['describe_count_' + numbers](evt.data.filePath, election, opts)});
+		postMessage({'type': 'describeCount', 'content': wasm['describe_count_' + numbers](evt.data.bltPath, election, opts)});
 		
 		// Init results table
 		postMessage({'type': 'initResultsTable', 'content': wasm['init_results_table_' + numbers](election, opts)});

src/stv/wasm.rs

@@ -17,6 +17,7 @@
 
 #![allow(rustdoc::private_intra_doc_links)]
 
+use crate::constraints::Constraints;
 use crate::election::{CandidateState, CountState, Election};
 use crate::numbers::{Fixed, GuardedFixed, NativeFloat64, Number, Rational};
 use crate::stv;
@@ -66,6 +67,13 @@ macro_rules! impl_type {
 			election.0.normalise_ballots();
 		}
 		
+		/// Call [Constraints::from_con] and set [Election::constraints]
+		#[wasm_bindgen]
+		#[allow(non_snake_case)]
+		pub fn [<election_load_constraints_$type>](election: &mut [<Election$type>], text: String) {
+			election.0.constraints = Some(Constraints::from_con(text.lines().map(|s| s.to_string()).into_iter()));
+		}
+		
 		/// Wrapper for [stv::count_init]
 		#[wasm_bindgen]
 		#[allow(non_snake_case)]
@@ -303,22 +311,31 @@ fn update_results_table<N: Number>(stage_num: usize, state: &CountState<N>, opts
 	result.push(&format!(r#"<td{}>{}</td>"#, tdclasses1, state.title).into());
 	for candidate in state.election.candidates.iter() {
 		let count_card = state.candidates.get(candidate).unwrap();
-		if count_card.state == stv::CandidateState::Elected {
+		match count_card.state {
-			result.push(&format!(r#"<td class="{}count elected">{}</td>"#, tdclasses2, pp(&count_card.transfers, opts.pp_decimals)).into());
+			CandidateState::Hopeful | CandidateState::Guarded => {
-			result.push(&format!(r#"<td class="{}count elected">{}</td>"#, tdclasses2, pp(&count_card.votes, opts.pp_decimals)).into());
+				result.push(&format!(r#"<td class="{}count">{}</td>"#, tdclasses2, pp(&count_card.transfers, opts.pp_decimals)).into());
-		} else if count_card.state == stv::CandidateState::Excluded {
+				result.push(&format!(r#"<td class="{}count">{}</td>"#, tdclasses2, pp(&count_card.votes, opts.pp_decimals)).into());
-			result.push(&format!(r#"<td class="{}count excluded">{}</td>"#, tdclasses2, pp(&count_card.transfers, opts.pp_decimals)).into());
+			}
-			if count_card.votes.is_zero() {
+			CandidateState::Elected => {
-				result.push(&format!(r#"<td class="{}count excluded">Ex</td>"#, tdclasses2).into());
+				result.push(&format!(r#"<td class="{}count elected">{}</td>"#, tdclasses2, pp(&count_card.transfers, opts.pp_decimals)).into());
-			} else {
+				result.push(&format!(r#"<td class="{}count elected">{}</td>"#, tdclasses2, pp(&count_card.votes, opts.pp_decimals)).into());
+			}
+			CandidateState::Doomed => {
+				result.push(&format!(r#"<td class="{}count excluded">{}</td>"#, tdclasses2, pp(&count_card.transfers, opts.pp_decimals)).into());
 				result.push(&format!(r#"<td class="{}count excluded">{}</td>"#, tdclasses2, pp(&count_card.votes, opts.pp_decimals)).into());
 			}
-		} else if count_card.state == stv::CandidateState::Withdrawn {
+			CandidateState::Withdrawn => {
-			result.push(&format!(r#"<td class="{}count excluded"></td>"#, tdclasses2).into());
+				result.push(&format!(r#"<td class="{}count excluded"></td>"#, tdclasses2).into());
-			result.push(&format!(r#"<td class="{}count excluded">WD</td>"#, tdclasses2).into());
+				result.push(&format!(r#"<td class="{}count excluded">WD</td>"#, tdclasses2).into());
-		} else {
+			}
-			result.push(&format!(r#"<td class="{}count">{}</td>"#, tdclasses2, pp(&count_card.transfers, opts.pp_decimals)).into());
+			CandidateState::Excluded => {
-			result.push(&format!(r#"<td class="{}count">{}</td>"#, tdclasses2, pp(&count_card.votes, opts.pp_decimals)).into());
+				result.push(&format!(r#"<td class="{}count excluded">{}</td>"#, tdclasses2, pp(&count_card.transfers, opts.pp_decimals)).into());
+				if count_card.votes.is_zero() {
+					result.push(&format!(r#"<td class="{}count excluded">Ex</td>"#, tdclasses2).into());
+				} else {
+					result.push(&format!(r#"<td class="{}count excluded">{}</td>"#, tdclasses2, pp(&count_card.votes, opts.pp_decimals)).into());
+				}
+			}
 		}
 	}
 	result.push(&format!(r#"<td class="{}count">{}</td>"#, tdclasses2, pp(&state.exhausted.transfers, opts.pp_decimals)).into());