CSSTUDIO-2371 Open links to logbook-entries in the Logbook application and add "Back"- and "Forward"-buttons

app/logbook/olog/ui/src/main/java/org/phoebus/logbook/olog/ui/LogEntryDisplayController.java

@@ -23,16 +23,22 @@
 import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.property.SimpleIntegerProperty;
 import javafx.beans.property.SimpleObjectProperty;
+import javafx.beans.value.ChangeListener;
 import javafx.fxml.FXML;
 import javafx.scene.Node;
 import javafx.scene.control.Button;
 import javafx.scene.control.ToggleButton;
 import javafx.scene.control.ToolBar;
+import javafx.scene.image.ImageView;
 import javafx.scene.layout.BorderPane;
+import javafx.scene.layout.HBox;
+import javafx.scene.layout.Priority;
+import javafx.scene.layout.Region;
 import org.phoebus.logbook.LogEntry;
 import org.phoebus.logbook.olog.ui.write.LogEntryEditorStage;
 import org.phoebus.olog.es.api.model.LogGroupProperty;
 import org.phoebus.olog.es.api.model.OlogLog;
+import org.phoebus.ui.javafx.ImageCache;
 
 
 public class LogEntryDisplayController {
@@ -52,12 +58,23 @@ public class LogEntryDisplayController {
     @FXML
     private Button replyButton;
     @FXML
+    private Region spring;
+    @FXML
+    private Button goBackButton;
+    @FXML
+    private Button goForwardButton;
+    @FXML
     private BorderPane emptyPane;
     @FXML
     private Node singleLogEntryDisplay;
     @FXML
     private Node mergedLogEntryDisplay;
 
+    ImageView goBackButtonIcon = ImageCache.getImageView(LogEntryDisplayController.class, "/icons/backward_nav.png");
+    ImageView goBackButtonIconDisabled = ImageCache.getImageView(LogEntryDisplayController.class, "/icons/backward_disabled.png");
+    ImageView goForwardButtonIcon = ImageCache.getImageView(LogEntryDisplayController.class, "/icons/forward_nav.png");
+    ImageView goForwardButtonIconDisabled = ImageCache.getImageView(LogEntryDisplayController.class, "/icons/forward_disabled.png");
+
     private final SimpleObjectProperty<LogEntry> logEntryProperty =
             new SimpleObjectProperty<>();
 
@@ -82,6 +99,19 @@ public void initialize() {
                 .bind(Bindings.createBooleanBinding(() -> currentViewProperty.get() == SINGLE, currentViewProperty));
         mergedLogEntryDisplay.visibleProperty()
                 .bind(Bindings.createBooleanBinding(() -> currentViewProperty.get() == MERGED, currentViewProperty));
+        HBox.setHgrow(spring, Priority.ALWAYS); // Spring to make subsequent elements right-aligned in the toolbar.
+
+        {
+            ChangeListener<Boolean> goBackButtonDisabledPropertyChangeListener = (property, oldValue, newValue) -> goBackButton.setGraphic(newValue ? goBackButtonIconDisabled : goBackButtonIcon);
+            goBackButton.disableProperty().addListener(goBackButtonDisabledPropertyChangeListener);
+            goBackButtonDisabledPropertyChangeListener.changed(goBackButton.disableProperty(), false, true);
+        }
+
+        {
+            ChangeListener<Boolean> goForwardButtonDisabledPropertyChangeListener = (property, oldValue, newValue) -> goForwardButton.setGraphic(newValue ? goForwardButtonIconDisabled : goForwardButtonIcon);
+            goForwardButton.disableProperty().addListener(goForwardButtonDisabledPropertyChangeListener);
+            goForwardButtonDisabledPropertyChangeListener.changed(goForwardButton.disableProperty(), false, true);
+        }
     }
 
     @FXML
@@ -116,6 +146,20 @@ public void newLogEntry(){
         new LogEntryEditorStage(new OlogLog(),  null, null).show();
     }
 
+    @FXML
+    public void goBack() {
+        if (logEntryTableViewController.goBackAndGoForwardActions.isPresent()) {
+            logEntryTableViewController.goBackAndGoForwardActions.get().goBack();
+        }
+    }
+
+    @FXML
+    public void goForward() {
+        if (logEntryTableViewController.goBackAndGoForwardActions.isPresent()) {
+            logEntryTableViewController.goBackAndGoForwardActions.get().goForward();
+        }
+    }
+
     public void setLogEntry(LogEntry logEntry) {
         if(logEntry == null){
             currentViewProperty.set(EMPTY);
@@ -147,5 +191,9 @@ public void updateLogEntry(LogEntry logEntry){
 
     public void setLogEntryTableViewController(LogEntryTableViewController logEntryTableViewController){
         this.logEntryTableViewController = logEntryTableViewController;
+        if (logEntryTableViewController.goBackAndGoForwardActions.isPresent()) {
+            goBackButton.disableProperty().bind(Bindings.isEmpty(logEntryTableViewController.goBackAndGoForwardActions.get().goBackActions));
+            goForwardButton.disableProperty().bind(Bindings.isEmpty(logEntryTableViewController.goBackAndGoForwardActions.get().goForwardActions));
+        }
     }
 }

app/logbook/olog/ui/src/main/java/org/phoebus/logbook/olog/ui/LogEntryTable.java

@@ -1,5 +1,7 @@
 package org.phoebus.logbook.olog.ui;
 
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.control.Alert;
 import org.phoebus.framework.nls.NLS;
@@ -29,8 +31,11 @@ public class LogEntryTable implements AppInstance {
     private final LogEntryTableApp app;
     private LogEntryTableViewController controller;
 
+    public GoBackAndGoForwardActions goBackAndGoForwardActions;
+
     public LogEntryTable(final LogEntryTableApp app) {
         this.app = app;
+        goBackAndGoForwardActions = new GoBackAndGoForwardActions();
         try {
             OlogQueryManager ologQueryManager = OlogQueryManager.getInstance();
             SearchParameters searchParameters = new SearchParameters();
@@ -44,13 +49,16 @@ public LogEntryTable(final LogEntryTableApp app) {
                 try {
                     if (app.getClient() != null) {
                         if (clazz.isAssignableFrom(LogEntryTableViewController.class)) {
-                            return clazz.getConstructor(LogClient.class, OlogQueryManager.class, SearchParameters.class)
-                                    .newInstance(app.getClient(), ologQueryManager, searchParameters);
+                            LogEntryTableViewController logEntryTableViewController = (LogEntryTableViewController) clazz.getConstructor(LogClient.class, OlogQueryManager.class, SearchParameters.class).newInstance(app.getClient(), ologQueryManager, searchParameters);
+                            logEntryTableViewController.setGoBackAndGoForwardActions(goBackAndGoForwardActions);
+                            return logEntryTableViewController;
                         } else if (clazz.isAssignableFrom(AdvancedSearchViewController.class)) {
                             return clazz.getConstructor(LogClient.class, SearchParameters.class)
                                     .newInstance(app.getClient(), searchParameters);
                         } else if (clazz.isAssignableFrom(SingleLogEntryDisplayController.class)) {
-                            return clazz.getConstructor(LogClient.class).newInstance(app.getClient());
+                            SingleLogEntryDisplayController singleLogEntryDisplayController = (SingleLogEntryDisplayController) clazz.getConstructor(LogClient.class).newInstance(app.getClient());
+                            singleLogEntryDisplayController.setSelectLogEntryInUI(id -> goBackAndGoForwardActions.loadLogEntryWithID(id));
+                            return singleLogEntryDisplayController;
                         } else if (clazz.isAssignableFrom(LogEntryDisplayController.class)) {
                             return clazz.getConstructor().newInstance();
                         } else if (clazz.isAssignableFrom(LogPropertiesController.class)) {
@@ -118,4 +126,76 @@ public void save(final Memento memento) {
     public void logEntryChanged(LogEntry logEntry){
         controller.logEntryChanged(logEntry);
     }
+
+    protected class GoBackAndGoForwardActions {
+
+        private GoBackAndGoForwardActions() {
+            goBackActions = FXCollections.observableArrayList();
+            goForwardActions = FXCollections.observableArrayList();
+        }
+
+        protected ObservableList<Runnable> goBackActions;
+        protected ObservableList<Runnable> goForwardActions;
+
+        private boolean isRecordingHistoryDisabled = false; // Used to not add go-back actions when clicking "back".
+
+        protected boolean getIsRecordingHistoryDisabled() {
+            return isRecordingHistoryDisabled;
+        }
+        public void setIsRecordingHistoryDisabled(boolean isRecordingHistoryDisabled) {
+            this.isRecordingHistoryDisabled = isRecordingHistoryDisabled;
+        }
+
+        private void gotoLogEntry(LogEntry logEntry) {
+            isRecordingHistoryDisabled = true;
+            boolean selected = controller.selectLogEntry(logEntry);
+            if (!selected) {
+                // The log entry was not available in the TreeView. Set the log entry without selecting it in the treeview:
+                controller.setLogEntry(logEntry);
+            }
+            isRecordingHistoryDisabled = false;
+        }
+
+        protected void addGoBackAction() {
+            LogEntry currentLogEntry = controller.getLogEntry();
+
+            if (currentLogEntry != null) {
+                goBackActions.add(0, () -> gotoLogEntry(currentLogEntry));
+            }
+        }
+
+        private void addGoForwardAction() {
+            LogEntry currentLogEntry = controller.getLogEntry();
+
+            if (currentLogEntry != null) {
+                goForwardActions.add(0, () -> gotoLogEntry(currentLogEntry));
+            }
+        }
+
+        private void loadLogEntryWithID(Long id) {
+            goForwardActions.clear();
+            addGoBackAction();
+
+            LogEntry logEntry = controller.client.getLog(id);
+            gotoLogEntry(logEntry);
+        }
+
+        protected void goBack() {
+            if (goBackActions.size() > 0) {
+                addGoForwardAction();
+                Runnable goBackAction = goBackActions.get(0);
+                goBackActions.remove(0);
+                goBackAction.run();
+            }
+        }
+
+        protected void goForward() {
+            if (goForwardActions.size() > 0) {
+                addGoBackAction();
+                Runnable goForwardAction = goForwardActions.get(0);
+                goForwardActions.remove(0);
+                goForwardAction.run();
+            }
+        }
+    }
 }

app/logbook/olog/ui/src/main/java/org/phoebus/logbook/olog/ui/LogEntryTableViewController.java

@@ -105,12 +105,18 @@ public class LogEntryTableViewController extends LogbookSearchController {
      *
      * @param logClient Log client implementation
      */
-    public LogEntryTableViewController(LogClient logClient, OlogQueryManager ologQueryManager, SearchParameters searchParameters) {
+    public LogEntryTableViewController(LogClient logClient,
+                                       OlogQueryManager ologQueryManager,
+                                       SearchParameters searchParameters) {
         setClient(logClient);
         this.ologQueryManager = ologQueryManager;
         this.searchParameters = searchParameters;
     }
 
+    protected void setGoBackAndGoForwardActions(LogEntryTable.GoBackAndGoForwardActions goBackAndGoForwardActions) {
+        this.goBackAndGoForwardActions = Optional.of(goBackAndGoForwardActions);
+    }
+
     private final SimpleIntegerProperty hitCountProperty = new SimpleIntegerProperty(0);
     private final SimpleIntegerProperty pageSizeProperty =
             new SimpleIntegerProperty(LogbookUIPreferences.search_result_page_size);
@@ -121,6 +127,7 @@ public LogEntryTableViewController(LogClient logClient, OlogQueryManager ologQue
 
     private final SearchParameters searchParameters;
 
+    protected Optional<LogEntryTable.GoBackAndGoForwardActions> goBackAndGoForwardActions = Optional.empty();
 
     @FXML
     public void initialize() {
@@ -182,6 +189,10 @@ public void initialize() {
         tableView.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> {
             // Update detailed view, but only if selection contains a single item.
             if (newValue != null && tableView.getSelectionModel().getSelectedItems().size() == 1) {
+                if (goBackAndGoForwardActions.isPresent() && !goBackAndGoForwardActions.get().getIsRecordingHistoryDisabled()) {
+                    goBackAndGoForwardActions.get().addGoBackAction();
+                    goBackAndGoForwardActions.get().goForwardActions.clear();
+                }
                 logEntryDisplayController.setLogEntry(newValue.getLogEntry());
             }
             List<LogEntry> logEntries = tableView.getSelectionModel().getSelectedItems()
@@ -392,7 +403,16 @@ private void refresh() {
             for (TableViewListItem selectedItem : selectedLogEntries) {
                 for (TableViewListItem item : tableView.getItems()) {
                     if (item.getLogEntry().getId().equals(selectedItem.getLogEntry().getId())) {
-                        Platform.runLater(() -> tableView.getSelectionModel().select(item));
+                        Platform.runLater(() -> {
+                            if (goBackAndGoForwardActions.isPresent()) {
+                                goBackAndGoForwardActions.get().setIsRecordingHistoryDisabled(true); // Do not create a "Back" action for the automatic reload.
+                                tableView.getSelectionModel().select(item);
+                                goBackAndGoForwardActions.get().setIsRecordingHistoryDisabled(false);
+                            }
+                            else {
+                                tableView.getSelectionModel().select(item);
+                            }
+                        });
                     }
                 }
             }
@@ -530,6 +550,14 @@ public void logEntryChanged(LogEntry logEntry) {
         logEntryDisplayController.updateLogEntry(logEntry);
     }
 
+    protected LogEntry getLogEntry() {
+        return logEntryDisplayController.getLogEntry();
+    }
+
+    protected void setLogEntry(LogEntry logEntry) {
+        logEntryDisplayController.setLogEntry(logEntry);
+    }
+
     /**
      * Selects a log entry as a result of an action outside the {@link TreeView}, but selection happens on the
      * {@link TreeView} item, if it exists (match on log entry id). If it does not exist, selection is cleared

app/logbook/olog/ui/src/main/java/org/phoebus/logbook/olog/ui/Messages.java

@@ -19,6 +19,7 @@ public class Messages
             ArchivedLaunchExternalAppFailed,
             ArchivedNoEntriesFound,
             ArchivedSaveFailed,
+            Back,
             CloseRequestHeader,
             CloseRequestButtonContinue,
             CloseRequestButtonDiscard,
@@ -29,6 +30,7 @@ public class Messages
             FileSave,
             FileSaveFailed,
             FileTooLarge,
+            Forward,
             GroupingFailed,
             GroupSelectedEntries,
             Level,

app/logbook/olog/ui/src/main/java/org/phoebus/logbook/olog/ui/SingleLogEntryDisplayController.java

@@ -30,6 +30,8 @@
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
+import java.util.Optional;
+import java.util.function.Consumer;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import java.util.stream.Collectors;
@@ -87,11 +89,17 @@ public class SingleLogEntryDisplayController extends HtmlAwareController {
 
     private final SimpleBooleanProperty logEntryUpdated = new SimpleBooleanProperty();
 
+    private Optional<Consumer<Long>> selectLogEntryInUI = Optional.empty();
+
     public SingleLogEntryDisplayController(LogClient logClient) {
         super(logClient.getServiceUrl());
         this.logClient = logClient;
     }
 
+    public void setSelectLogEntryInUI(Consumer<Long> selectLogEntryInUI) {
+        this.selectLogEntryInUI = Optional.of(id -> selectLogEntryInUI.accept(id));
+    };
+
     @FXML
     public void initialize() {
 
@@ -101,9 +109,12 @@ public void initialize() {
         copyURLButton.visibleProperty().setValue(LogbookUIPreferences.web_client_root_URL != null
                 && !LogbookUIPreferences.web_client_root_URL.isEmpty());
 
-        webEngine = webView.getEngine();
-        // This will make links clicked in the WebView to open in default browser.
-        webEngine.getLoadWorker().stateProperty().addListener(new HyperLinkRedirectListener(webView));
+        {
+            Optional<String> webClientRoot = LogbookUIPreferences.web_client_root_URL == null || LogbookUIPreferences.web_client_root_URL.equals("") ? Optional.empty() : Optional.of(LogbookUIPreferences.web_client_root_URL);
+            webEngine = webView.getEngine();
+            // This will make links clicked in the WebView to open in default browser.
+            webEngine.getLoadWorker().stateProperty().addListener(new HyperLinkRedirectListener(webView, webClientRoot, selectLogEntryInUI));
+        }
 
         updatedIndicator.visibleProperty().bind(logEntryUpdated);
         updatedIndicator.setOnMouseEntered(me -> updatedIndicator.setCursor(Cursor.HAND));

app/logbook/olog/ui/src/main/resources/org/phoebus/logbook/olog/ui/LogEntryDisplay.fxml

@@ -32,6 +32,11 @@
                 <Button fx:id="replyButton" mnemonicParsing="false" onAction="#reply" text="%Reply" disable="true"/>
                 <ToggleButton fx:id="showHideLogEntryGroupButton" contentDisplay="RIGHT" mnemonicParsing="false"
                               text="%ShowHideLogEntryGroup" disable="true" onAction="#showHideLogEntryGroup"/>
+                <Region fx:id="spring" /> <!-- Spring to make the next elements right-aligned. -->
+                <Button fx:id="goBackButton" mnemonicParsing="false"
+                        onAction="#goBack" text="%Back" disable="true" />
+                <Button fx:id="goForwardButton" mnemonicParsing="false"
+                        onAction="#goForward" text="%Forward" disable="true" />
             </items>
         </ToolBar>
     </top>

app/logbook/olog/ui/src/main/resources/org/phoebus/logbook/olog/ui/messages.properties

@@ -12,6 +12,7 @@ ArchivedLaunchExternalAppFailed=Unable to launch external application to view fi
 Author=Author:
 Attachments=Attachments
 AttachmentsSearchProperty=Attachments:
+Back=Back
 BrowseButton=Browse
 Cancel=Cancel
 CancelTooltip=Cancel the current entry.
@@ -40,6 +41,7 @@ File=File
 FileSave=Save Attachment
 FileSaveFailed=Failed to save attachment.
 FileTooLarge=File {0} too large, selected file(s) not added.
+Forward=Forward
 GoToFirstPage=Go to first page
 GoToLastPage=Go to last page
 GroupingFailed=Failed to create group, log entries already contained in different groups.