Support appearance configuration

Signed-off-by: Hiroshi Miura <miurahr@linux.com>

src/main/java/io/github/eb4j/ebview/EBViewer.java

@@ -19,6 +19,7 @@
 package io.github.eb4j.ebview;
 
 import com.formdev.flatlaf.FlatLightLaf;
+import io.github.eb4j.ebview.core.Core;
 import io.github.eb4j.ebview.dictionary.DictionariesManager;
 import io.github.eb4j.ebview.gui.MainWindow;
 import io.github.eb4j.ebview.gui.MainWindowMenu;
@@ -32,29 +33,7 @@
 
 public class EBViewer implements Runnable {
 
-    private final DictionariesManager dictionariesManager;
-    private final MainWindow mw;
-
-    public EBViewer(final File dictionaryDirectory, final boolean remote) {
-        dictionariesManager = new DictionariesManager();
-        if (dictionaryDirectory != null) {
-            dictionariesManager.loadDictionaries(dictionaryDirectory);
-        }
-        mw = new MainWindow(dictionariesManager);
-        if (!remote) {
-            new MainWindowMenu(this);
-            mw.showMessage("Please add dictionaries from Dictionary menu at first.");
-        } else {
-            mw.showMessage("Please enter search word above input box.");
-        }
-    }
-
-    public DictionariesManager getDictionariesManager() {
-        return dictionariesManager;
-    }
-
-    public JFrame getApplicationFrame() {
-        return mw.getApplicationFrame();
+    public EBViewer() {
     }
 
     /**
@@ -76,7 +55,8 @@ public static void main(final String... args) {
         }
         try {
             Preferences.init();
-            EBViewer viewer = new EBViewer(dictionaryDirectory, remote);
+            Core.initializeGUI(dictionaryDirectory, remote);
+            EBViewer viewer = new EBViewer();
             Thread t = new Thread(viewer);
             t.start();
         } catch (Exception e) {
@@ -97,6 +77,6 @@ public static void main(final String... args) {
      */
     @Override
     public void run() {
-        mw.setVisible(true);
+        Core.run();
     }
 }

src/main/java/io/github/eb4j/ebview/core/Core.java

@@ -0,0 +1,101 @@
+/*
+ * EBViewer, a dictionary viewer application.
+ * Copyright (C) 2022 Hiroshi Miura.
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+package io.github.eb4j.ebview.core;
+
+import io.github.eb4j.ebview.data.DictionaryEntry;
+import io.github.eb4j.ebview.dictionary.DictionariesManager;
+import io.github.eb4j.ebview.gui.IMainWindow;
+import io.github.eb4j.ebview.gui.MainWindow;
+import io.github.eb4j.ebview.gui.MainWindowMenu;
+
+import javax.swing.JFrame;
+import javax.swing.SwingUtilities;
+import java.awt.Font;
+import java.io.File;
+import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+public class Core {
+
+    private static final List<IFontChangedListener> FONT_CHANGED_EVENT_LISTENERS = new CopyOnWriteArrayList<>();
+    private static DictionariesManager dictionariesManager;
+    private static MainWindow mw;
+
+    private Core() {
+    }
+
+    public static void initializeGUI(final File dictionaryDirectory, final boolean remote) {
+        dictionariesManager = new DictionariesManager();
+        mw = new MainWindow();
+        if (dictionaryDirectory != null) {
+            dictionariesManager.loadDictionaries(dictionaryDirectory);
+        }
+        if (!remote) {
+            new MainWindowMenu();
+            mw.showMessage("Please add dictionaries from Dictionary menu at first.");
+        } else {
+            mw.showMessage("Please enter search word above input box.");
+        }
+    }
+
+    public static void run() {
+        mw.setVisible(true);
+    }
+
+    public static IMainWindow getMainWindow() {
+        return mw;
+    }
+    public static DictionariesManager getDictionariesManager() {
+        return dictionariesManager;
+    }
+
+    public static JFrame getApplicationFrame() {
+        return mw.getApplicationFrame();
+    }
+
+    /** Register listener. */
+    public static void registerFontChangedEventListener(final IFontChangedListener listener) {
+        FONT_CHANGED_EVENT_LISTENERS.add(listener);
+    }
+
+    /** Unregister listener. */
+    public static void unregisterFontChangedEventListener(final IFontChangedListener listener) {
+        FONT_CHANGED_EVENT_LISTENERS.remove(listener);
+    }
+
+    /** Fire event. */
+    public static void fireFontChanged(final Font newFont) {
+        SwingUtilities.invokeLater(() -> {
+            for (IFontChangedListener listener : FONT_CHANGED_EVENT_LISTENERS) {
+                try {
+                    listener.onFontChanged(newFont);
+                } catch (Throwable ignored) {
+                }
+            }
+        });
+    }
+
+    public static void updateDictionaryPane(final List<DictionaryEntry> entries) {
+        mw.updateDictionaryPane(entries);
+    }
+
+    public static void moveTo(final int index) {
+        mw.moveTo(index);
+    }
+}

src/main/java/io/github/eb4j/ebview/core/IFontChangedListener.java

@@ -0,0 +1,25 @@
+/*
+ * EBViewer, a dictionary viewer application.
+ * Copyright (C) 2022 Hiroshi Miura.
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+package io.github.eb4j.ebview.core;
+
+import java.awt.Font;
+
+public interface IFontChangedListener {
+    void onFontChanged(Font newFont);
+}

src/main/java/io/github/eb4j/ebview/dictionary/oxford/OxfordDriver.java

@@ -1,3 +1,21 @@
+/*
+ * EBViewer, a dictionary viewer application.
+ * Copyright (C) 2021-2022 Hiroshi Miura.
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
 package io.github.eb4j.ebview.dictionary.oxford;
 
 import io.github.eb4j.ebview.data.DictionaryEntry;

src/main/java/io/github/eb4j/ebview/gui/DictionaryPane.java

@@ -1,5 +1,6 @@
 package io.github.eb4j.ebview.gui;
 
+import io.github.eb4j.ebview.core.Core;
 import io.github.eb4j.ebview.data.DictionaryEntry;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -39,17 +40,12 @@ public class DictionaryPane extends JTextPane implements IThreadPane {
 
     private final HTMLEditorKit htmlEditorKit = new HTMLEditorKit();
 
-    private StyleSheet baseStyleSheet;
-    private int zoomLevel = 0;
-
-    public DictionaryPane() {
+    public DictionaryPane(final Font font) {
         super();
         setContentType("text/html");
         ((HTMLDocument) getDocument()).setPreservesUnknownTags(false);
-        setFont(getFont());
-        setStyle();
-        htmlEditorKit.setStyleSheet(baseStyleSheet);
-        setEditorKit(htmlEditorKit);
+        setFont(font);
+        Core.registerFontChangedEventListener(this::setFont);
         FocusListener listener = new FocusAdapter() {
             @Override
             public void focusGained(final FocusEvent e) {
@@ -70,58 +66,27 @@ public void setFont(final Font font) {
         Map attributes = font.getAttributes();
         attributes.put(TextAttribute.LIGATURES, TextAttribute.LIGATURES_ON);
         super.setFont(font.deriveFont(attributes));
-        Document doc = getDocument();
-        if (!(doc instanceof HTMLDocument)) {
-            return;
+        if (htmlEditorKit != null) {
+            setStyle();
         }
     }
 
     @SuppressWarnings({"avoidinlineconditionals"})
     private void setStyle() {
         Font font = getFont();
-        baseStyleSheet = new StyleSheet();
+        StyleSheet baseStyleSheet = new StyleSheet();
         baseStyleSheet.addRule("body { font-family: " + font.getName() + "; "
                 + " font-size: " + font.getSize() + "; "
                 + " font-style: " + (font.getStyle() == Font.BOLD ? "bold"
                 : font.getStyle() == Font.ITALIC ? "italic" : "normal") + "; "
                 + " color: " + toHex(UIManager.getColor("TextPane.foreground")) + "; "
                 + " background: " + toHex(UIManager.getColor("TextPane.background")) + "; } "
-                + ".word {font-size: " + (zoomLevel + 2 + font.getSize()) + "; font-style: bold; }"
-                + ".article {font-size: " + (zoomLevel + font.getSize()) + "; }"
+                + ".word {font-size: " + (2 + font.getSize()) + "; font-style: bold; }"
+                + ".article {font-size: " + (font.getSize()) + "; }"
                 + ".reference { font-style: italic; }"
         );
         htmlEditorKit.setStyleSheet(baseStyleSheet);
-    }
-
-    private void limitZoom() {
-        int size = getFont().getSize();
-        if (size + zoomLevel > 64) {
-            zoomLevel = 64 - size;
-            return;
-        }
-        if (size + zoomLevel < 6) {
-            zoomLevel = size - 6;
-        }
-    }
-
-    public void increaseZoom() {
-        zoomLevel++;
-        limitZoom();
-        setStyle();
-    }
-
-    public void decreaseZoom() {
-        zoomLevel--;
-        limitZoom();
-        setStyle();
-    }
-
-    public String getZoomLevel() {
-        if (zoomLevel > 0) {
-            return "+" + zoomLevel;
-        } else {
-            return String.valueOf(zoomLevel);
-        }
+        setEditorKit(htmlEditorKit);
     }
 
     @Override

src/main/java/io/github/eb4j/ebview/gui/EBViewerModel.java

@@ -18,6 +18,7 @@
 
 package io.github.eb4j.ebview.gui;
 
+import io.github.eb4j.ebview.core.Core;
 import io.github.eb4j.ebview.data.DictionaryEntry;
 
 import javax.swing.DefaultListModel;
@@ -113,7 +114,7 @@ public void updateResult() {
             }
         }
         updateHeadingsModel(wordList);
-        MainWindow.updateDictionaryPane(entries);
+        Core.updateDictionaryPane(entries);
     }
 
 }

src/main/java/io/github/eb4j/ebview/gui/IMainWindow.java

@@ -3,10 +3,12 @@
 import io.github.eb4j.ebview.dictionary.DictionariesManager;
 
 import javax.swing.JFrame;
+import java.awt.Font;
 
 public interface IMainWindow {
-
-    DictionariesManager getDictionariesManager();
+    void showMessage(String msg);
 
     JFrame getApplicationFrame();
+
+    Font getApplicationFont();
 }