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Merge pull request #48 from itsallcode/add-file-cache
Autocomplete for comments
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88 changes: 88 additions & 0 deletions
88
jfxui/src/main/java/org/itsallcode/whiterabbit/jfxui/ui/widget/AutoCompleteTextField.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| package org.itsallcode.whiterabbit.jfxui.ui.widget; | ||
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| import java.util.List; | ||
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| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
| import org.itsallcode.whiterabbit.logic.autocomplete.AutocompleteEntrySupplier; | ||
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| import javafx.geometry.Side; | ||
| import javafx.scene.control.ContextMenu; | ||
| import javafx.scene.control.CustomMenuItem; | ||
| import javafx.scene.control.Label; | ||
| import javafx.scene.control.TextField; | ||
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| /** | ||
| * Based on https://gist.github.com/floralvikings/10290131 | ||
| */ | ||
| @SuppressWarnings("java:S110") // Deep inheritance tree required by API | ||
| public class AutoCompleteTextField extends TextField | ||
| { | ||
| private static final Logger LOG = LogManager.getLogger(AutoCompleteTextField.class); | ||
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| private static final int MAX_ENTRY_COUNT = 10; | ||
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| private final AutocompleteEntrySupplier autocompleteEntriesSupplier; | ||
| private final ContextMenu entriesPopup; | ||
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| public AutoCompleteTextField(AutocompleteEntrySupplier autocompleteEntriesSupplier) | ||
| { | ||
| this.autocompleteEntriesSupplier = autocompleteEntriesSupplier; | ||
| entriesPopup = new ContextMenu(); | ||
| textProperty().addListener((observableValue, oldValue, newValue) -> textUpdated(getText())); | ||
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| focusedProperty().addListener((observableValue, oldValue, newValue) -> entriesPopup.hide()); | ||
| } | ||
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| private void textUpdated(final String currentText) | ||
| { | ||
| if (currentText.isBlank()) | ||
| { | ||
| entriesPopup.hide(); | ||
| return; | ||
| } | ||
| final List<String> searchResult = autocompleteEntriesSupplier.getEntries(currentText); | ||
| if (searchResult.isEmpty()) | ||
| { | ||
| entriesPopup.hide(); | ||
| return; | ||
| } | ||
| populatePopup(searchResult); | ||
| if (!entriesPopup.isShowing()) | ||
| { | ||
| showPopup(); | ||
| } | ||
| } | ||
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| private void showPopup() | ||
| { | ||
| if (getScene() == null) | ||
| { | ||
| LOG.warn("Scene not available for {}", this); | ||
| return; | ||
| } | ||
| entriesPopup.show(this, Side.BOTTOM, 0, 0); | ||
| } | ||
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| private void populatePopup(List<String> searchResult) | ||
| { | ||
| final int count = Math.min(searchResult.size(), MAX_ENTRY_COUNT); | ||
| entriesPopup.getItems().clear(); | ||
| for (int i = 0; i < count; i++) | ||
| { | ||
| final String result = searchResult.get(i); | ||
| entriesPopup.getItems().add(createMenuItem(result)); | ||
| } | ||
| } | ||
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| private CustomMenuItem createMenuItem(final String result) | ||
| { | ||
| final Label entryLabel = new Label(result); | ||
| final CustomMenuItem item = new CustomMenuItem(entryLabel, true); | ||
| item.setOnAction(actionEvent -> { | ||
| setText(result); | ||
| entriesPopup.hide(); | ||
| }); | ||
| return item; | ||
| } | ||
| } |
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