refactor button ui, rename resources to work with image cache

platform/platform-impl/src/com/intellij/ide/ui/laf/intellij/MacIntelliJButtonUI.java

@@ -15,7 +15,6 @@
  */
 package com.intellij.ide.ui.laf.intellij;
 
-import com.intellij.ide.ui.laf.darcula.DarculaLaf;
 import com.intellij.ide.ui.laf.darcula.ui.DarculaButtonUI;
 import com.intellij.ui.Gray;
 import sun.swing.SwingUtilities2;
@@ -34,21 +33,6 @@ public class MacIntelliJButtonUI extends DarculaButtonUI {
   private static Rectangle textRect = new Rectangle();
   private static Rectangle iconRect = new Rectangle();
 
-  private static final Icon LEFT = DarculaLaf.loadIcon("buttonLeft.png");
-  private static final Icon RIGHT = DarculaLaf.loadIcon("buttonRight.png");
-  private static final Icon MIDDLE = DarculaLaf.loadIcon("buttonMiddle.png");
-  private static final Icon LEFT_SELECTED = DarculaLaf.loadIcon("selectedButtonLeft.png");
-  private static final Icon RIGHT_SELECTED = DarculaLaf.loadIcon("selectedButtonRight.png");
-  private static final Icon MIDDLE_SELECTED = DarculaLaf.loadIcon("selectedButtonMiddle.png");
-  private static final Icon LEFT_FOCUSED = DarculaLaf.loadIcon("focusedButtonLeft.png");
-  private static final Icon RIGHT_FOCUSED = DarculaLaf.loadIcon("focusedButtonRight.png");
-  private static final Icon MIDDLE_FOCUSED = DarculaLaf.loadIcon("focusedButtonMiddle.png");
-  private static final Icon LEFT_SELECTED_FOCUSED = DarculaLaf.loadIcon("focusedSelectedButtonLeft.png");
-  private static final Icon RIGHT_SELECTED_FOCUSED = DarculaLaf.loadIcon("focusedSelectedButtonRight.png");
-  private static final Icon MIDDLE_SELECTED_FOCUSED = DarculaLaf.loadIcon("focusedSelectedButtonMiddle.png");
-  private static final Icon HELP_BUTTON = DarculaLaf.loadIcon("helpButton.png");
-  private static final Icon HELP_BUTTON_FOCUSED = DarculaLaf.loadIcon("focusedHelpButton.png");
-
   @SuppressWarnings({"MethodOverridesStaticMethodOfSuperclass", "UnusedDeclaration"})
   public static ComponentUI createUI(JComponent c) {
     return new MacIntelliJButtonUI();
@@ -59,7 +43,7 @@ public class MacIntelliJButtonUI extends DarculaButtonUI {
     int w = c.getWidth();
     int h = c.getHeight();
     if (isHelpButton(c)) {
-      Icon icon = c.hasFocus() ? HELP_BUTTON_FOCUSED : HELP_BUTTON;
+      Icon icon = MacIntelliJIconCache.getIcon("helpButton", false, c.hasFocus(), false);
       int x = (w - icon.getIconWidth()) / 2;
       int y = (h - icon.getIconHeight()) / 2;
       icon.paintIcon(c, g, x, y);
@@ -79,22 +63,19 @@ public class MacIntelliJButtonUI extends DarculaButtonUI {
         int x = isFocused ? 0 : 2;
         int y = isFocused ? 0 : (h - viewRect.height) / 2;
         Icon icon;
-        icon = isDefault ? isFocused ? LEFT_SELECTED_FOCUSED : LEFT_SELECTED
-                         : isFocused ? LEFT_FOCUSED : LEFT;
+        icon = MacIntelliJIconCache.getIcon("buttonLeft", isDefault, isFocused, false);
         icon.paintIcon(b, g, x, y);
         x += icon.getIconWidth();
-        int stop = w - (isFocused ? 0 : 2) - (isFocused ? RIGHT_FOCUSED.getIconWidth() : RIGHT.getIconWidth());
+        int stop = w - (isFocused ? 0 : 2) - (MacIntelliJIconCache.getIcon("buttonRight", isDefault, isFocused, false).getIconWidth());
         Graphics gg = g.create(0, 0, w, h);
         gg.setClip(x, y, stop - x, h);
-        icon = isDefault ? isFocused ? MIDDLE_SELECTED_FOCUSED : MIDDLE_SELECTED
-                         : isFocused ? MIDDLE_FOCUSED : MIDDLE;
+        icon = MacIntelliJIconCache.getIcon("buttonMiddle", isDefault, isFocused, false);
         while (x < stop) {
           icon.paintIcon(b, gg, x, y);
           x += icon.getIconWidth();
         }
         gg.dispose();
-        icon = isDefault ? isFocused ? RIGHT_SELECTED_FOCUSED : RIGHT_SELECTED
-                         : isFocused ? RIGHT_FOCUSED : RIGHT;
+        icon = MacIntelliJIconCache.getIcon("buttonRight", isDefault, isFocused, false);
         icon.paintIcon(b, g, stop, y);
 
         clearTextShiftOffset();