#1723 WIP Adds paging controller to calls table view.

src/main/java/io/github/dsheirer/audio/call/CallRepository.java

@@ -19,11 +19,12 @@
 
 package io.github.dsheirer.audio.call;
 
-import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.jpa.repository.JpaRepository;
 
 /**
  * Calls database repository
  */
-public interface CallRepository extends CrudRepository<Call,Long>
+public interface CallRepository extends JpaRepository<Call,Long>
 {
+
 }

src/main/java/io/github/dsheirer/audio/call/CallViewPanel.java

@@ -26,30 +26,32 @@
 import jakarta.annotation.PostConstruct;
 import jakarta.annotation.PreDestroy;
 import jakarta.annotation.Resource;
-import java.util.ArrayList;
-import java.util.List;
 import javafx.application.Platform;
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import javafx.geometry.Insets;
 import javafx.geometry.Pos;
+import javafx.scene.control.ComboBox;
 import javafx.scene.control.Label;
 import javafx.scene.control.ProgressIndicator;
 import javafx.scene.control.TableColumn;
 import javafx.scene.control.TableView;
 import javafx.scene.control.TextField;
+import javafx.scene.control.Tooltip;
 import javafx.scene.control.cell.PropertyValueFactory;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.Priority;
 import javafx.scene.layout.VBox;
 import org.controlsfx.control.textfield.TextFields;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
 
 /**
  * Audio call events playback and audio event database control/view panel.
  */
-public class CallViewPanel extends VBox
+public class CallViewPanel extends VBox implements IPageRequestListener
 {
     private static final Logger LOGGER = LoggerFactory.getLogger(CallViewPanel.class);
 
@@ -64,7 +66,12 @@ public class CallViewPanel extends VBox
     private TableView<Call> mCallTableView;
     private ProgressIndicator mPlaceholderProgressIndicator;
     private HBox mSearchBox;
+    private HBox mPagingBox;
     private TextField mSearchField;
+    private PagingController mPagingController;
+    private ComboBox<Integer> mPageSizeComboBox;
+    private Label mCallsCountLabel;
+    private long mCallCount;
 
     /**
      * Constructs an instance
@@ -81,20 +88,14 @@ public CallViewPanel()
     public void postConstruct()
     {
         VBox.setVgrow(getCallTableView(), Priority.ALWAYS);
-        getChildren().addAll(getSearchBox(), getCallTableView());
+        getChildren().addAll(getSearchBox(), getCallTableView(), getPagingBox());
+
+        getPagingController().update(1, 20);
 
         //Register for call event notifications
         mAudioManager.add(mCallEventListener);
 
         getPlaceholderProgressIndicator().setVisible(true);
-        ThreadPool.CACHED.submit(() -> {
-            List<Call> calls = new ArrayList<>();
-            mCallRepository.findAll().forEach(call -> calls.add(call));
-            Platform.runLater(() -> {
-                mCalls.addAll(calls);
-                getPlaceholderProgressIndicator().setVisible(false);
-            });
-        });
 
     }
 
@@ -108,6 +109,91 @@ public void preDestroy()
         mAudioManager.remove(mCallEventListener);
     }
 
+    @Override
+    public void pageRequested(int page)
+    {
+        if(page >= 1)
+        {
+            Platform.runLater(() -> getPlaceholderProgressIndicator().setVisible(true));
+
+            ThreadPool.CACHED.submit(() -> {
+                Page<Call> callPage = mCallRepository.findAll(PageRequest.of(page - 1, getPageSize()));
+                Platform.runLater(() -> {
+                    mCalls.clear();
+                    mCalls.addAll(callPage.stream().toList());
+                    getPlaceholderProgressIndicator().setVisible(false);
+                    getPagingController().update(callPage.getNumber() + 1, callPage.getTotalPages());
+                    getCallsCountLabel().setText("Calls: " + callPage.getTotalElements());
+                });
+            });
+        }
+    }
+
+    /**
+     * Current page size
+     */
+    private int getPageSize()
+    {
+        return getPageSizeComboBox().getValue();
+    }
+
+    /**
+     * Calls label to display the number of calls in the database.
+     */
+    private Label getCallsCountLabel()
+    {
+        if(mCallsCountLabel == null)
+        {
+            mCallsCountLabel = new Label("Calls: 0");
+        }
+
+        return mCallsCountLabel;
+    }
+
+    /**
+     * Page size selection combo box.
+     *
+     * Note: when the user changes the page size, we always request page 1 again.
+     */
+    private ComboBox<Integer> getPageSizeComboBox()
+    {
+        if(mPageSizeComboBox == null)
+        {
+            ObservableList<Integer> pageSizes = FXCollections.observableArrayList();
+            pageSizes.addAll(25, 50, 100, 200);
+            mPageSizeComboBox = new ComboBox<>(pageSizes);
+            mPageSizeComboBox.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> pageRequested(1));
+            mPageSizeComboBox.setTooltip(new Tooltip("Select the page size"));
+            mPageSizeComboBox.getSelectionModel().select(0);
+        }
+
+        return mPageSizeComboBox;
+    }
+
+    /**
+     * Paging controls panel
+     */
+    private HBox getPagingBox()
+    {
+        if(mPagingBox == null)
+        {
+            mPagingBox = new HBox();
+            mPagingBox.setAlignment(Pos.CENTER_LEFT);
+            mPagingBox.setSpacing(3);
+            Label pageSizeLabel = new Label("Page Size:");
+            getPagingController().setPadding(new Insets(2, 0, 6, 20));
+            pageSizeLabel.setPadding(new Insets(0, 2, 0, 10));
+            getCallsCountLabel().setPadding(new Insets(0, 0, 0, 10));
+            mPagingBox.getChildren().addAll(getPagingController(), pageSizeLabel, getPageSizeComboBox(), getCallsCountLabel());
+        }
+
+        return mPagingBox;
+    }
+
+    /**
+     * Call table view
+     * @return
+     */
     private TableView<Call> getCallTableView()
     {
         if(mCallTableView == null)
@@ -185,6 +271,19 @@ private TableView<Call> getCallTableView()
         return mCallTableView;
     }
 
+    /**
+     * Paging controller
+     */
+    public PagingController getPagingController()
+    {
+        if(mPagingController == null)
+        {
+            mPagingController = new PagingController(this::pageRequested);
+        }
+
+        return mPagingController;
+    }
+
     /**
      * Progress indicator to convey data loading status when the table content is being updated.
      * @return progress indicator

src/main/java/io/github/dsheirer/audio/call/IPageRequestListener.java

@@ -0,0 +1,32 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2023 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+
+package io.github.dsheirer.audio.call;
+
+/**
+ * Listener interface for receiving paging requests from user initiated actions.
+ */
+public interface IPageRequestListener
+{
+    /**
+     * Indicates the user requests to display a page number
+     * @param page number to display.
+     */
+    void pageRequested(int page);
+}