DanilaFe/Abacus
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Code Issues Releases Wiki Activity

Run calculations via thread, and stop thread if necessary.

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This commit is contained in:
Danila Fedorin 2017-08-05 14:34:31 -07:00
parent 2523b9b04b
commit 99be2d80f1
2 changed files with 41 additions and 19 deletions
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58
src/main/java/org/nwapw/abacus/fx/AbacusController.java
View File

@ -1,5 +1,6 @@
package org.nwapw.abacus.fx;
import javafx.application.Platform;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
@ -10,6 +11,7 @@ import javafx.util.Callback;
import javafx.util.StringConverter;
import org.nwapw.abacus.Abacus;
import org.nwapw.abacus.config.Configuration;
import org.nwapw.abacus.number.ComputationInterruptedException;
import org.nwapw.abacus.number.NumberInterface;
import org.nwapw.abacus.plugin.PluginListener;
import org.nwapw.abacus.plugin.PluginManager;
@ -110,6 +112,39 @@ public class AbacusController implements PluginListener {
* The alert shown when a press to "apply" is needed.
*/
private Alert reloadAlert;
/**
* The runnable used to perform the calculation.
*/
private final Runnable CALCULATION_RUNNABLE = new Runnable() {
private String attemptCalculation(){
TreeNode constructedTree = abacus.parseString(inputField.getText());
if (constructedTree == null) {
return ERR_SYNTAX;
}
try {
NumberInterface evaluatedNumber = abacus.evaluateTree(constructedTree);
if (evaluatedNumber == null) {
return ERR_EVAL;
}
historyData.add(new HistoryModel(inputField.getText(), constructedTree.toString(), evaluatedNumber.toString()));
} catch (ComputationInterruptedException exception) {
return ERR_STOP;
}
return "";
}
@Override
public void run() {
String calculation = attemptCalculation();
Platform.runLater(() -> {
outputText.setText(calculation);
inputButton.setDisable(false);
stopButton.setDisable(true);
});
}
};
private Thread calculationThread;
/**
* Alerts the user if the changes they made
@ -174,28 +209,15 @@ public class AbacusController implements PluginListener {
@FXML
private void performCalculation() {
inputButton.setDisable(true);
TreeNode constructedTree = abacus.parseString(inputField.getText());
if (constructedTree == null) {
outputText.setText(ERR_SYNTAX);
inputButton.setDisable(false);
return;
}
NumberInterface evaluatedNumber = abacus.evaluateTree(constructedTree);
if (evaluatedNumber == null) {
outputText.setText(ERR_EVAL);
inputButton.setDisable(false);
return;
}
outputText.setText(evaluatedNumber.toString());
historyData.add(new HistoryModel(inputField.getText(), constructedTree.toString(), evaluatedNumber.toString()));
inputButton.setDisable(false);
inputField.setText("");
stopButton.setDisable(false);
calculationThread = new Thread(CALCULATION_RUNNABLE);
calculationThread.start();
}
@FXML
private void performStop(){
System.out.println("Stopping");
if(calculationThread != null)
calculationThread.interrupt();
}
@FXML

2
src/main/resources/abacus.fxml
View File

@ -35,7 +35,7 @@
<Button fx:id="inputButton" text="Calculate" maxWidth="Infinity"
onAction="#performCalculation"/>
<Button fx:id="stopButton" text="Stop" maxWidth="Infinity"
onAction="#performStop"/>
onAction="#performStop" disable="true"/>
</VBox>
</bottom>
</BorderPane>