jsyntaxpane.actions.gui.MemberCell Maven / Gradle / Ivy
/*
* Copyright 2008 Ayman Al-Sairafi [email protected]
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License
* at http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jsyntaxpane.actions.gui;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import javax.swing.ImageIcon;
import javax.swing.JList;
import javax.swing.JPanel;
import jsyntaxpane.SyntaxView;
import jsyntaxpane.actions.ActionUtils;
import jsyntaxpane.util.ReflectUtils;
/**
* This class will render a Member. There are Method, Field and Constructor subclasses
* @author Ayman Al-Sairafi
*/
abstract class MemberCell extends JPanel {
private final JList list;
private final boolean isSelected;
private final Color backColor;
private final Member member;
private final Class theClass;
public MemberCell(JList list, boolean isSelected, Color backColor, Member member, Class clazz) {
super();
this.list = list;
this.isSelected = isSelected;
this.backColor = backColor;
this.member = member;
this.theClass = clazz;
}
@Override
public void paintComponent(Graphics g) {
SyntaxView.setRenderingHits((Graphics2D) g);
g.setFont(list.getFont());
super.paintComponent(g);
FontMetrics fm = g.getFontMetrics();
g.setColor(isSelected ? list.getSelectionBackground() : backColor);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(isSelected ? list.getSelectionForeground() : list.getForeground());
g.drawImage(getIcon(), 2, 0, null);
int x = 6 + getIcon().getWidth(this);
int y = fm.getHeight();
if (member.getDeclaringClass().equals(theClass)) {
Font bold = list.getFont().deriveFont(Font.BOLD);
g.setFont(bold);
}
x = drawString(getMemberName(), x, y, g);
g.setFont(list.getFont());
x = drawString(getArguments(), x, y, g);
String right = getReturnType();
int rw = fm.stringWidth(right);
g.drawString(right, getWidth() - rw - 4, fm.getAscent());
}
@Override
public Dimension getPreferredSize() {
Font font = list.getFont();
Graphics g = getGraphics();
FontMetrics fm = g.getFontMetrics(font);
// total text for this component:
String total = getMemberName() + getArguments() + getReturnType() + " ";
return new Dimension(fm.stringWidth(total) + 20, Math.max(fm.getHeight(), 16));
}
private int drawString(String string, int x, int y, Graphics g) {
if(ActionUtils.isEmptyOrBlanks(string)) {
return x;
}
int w = g.getFontMetrics().stringWidth(string);
g.drawString(string, x, y);
return x + w;
}
/**
* Read all relevant icons and returns the Map. The loc should contain the
* fully qualified URL for the icons. The icon names read will have the words
* _private, protected, _static, _static_private and _static_protected and the
* extension ".png" appended.
* @param loc root for icon locations
* @return Map (can be used directly with getModifiers & 0xf)
*/
Map readIcons(String loc) {
Map icons = new HashMap();
icons.put(Modifier.PUBLIC, readImage(loc, ""));
icons.put(Modifier.PRIVATE, readImage(loc, "_private"));
icons.put(Modifier.PROTECTED, readImage(loc, "_protected"));
icons.put(Modifier.STATIC | Modifier.PUBLIC, readImage(loc, "_static"));
icons.put(Modifier.STATIC | Modifier.PRIVATE, readImage(loc, "_static_private"));
icons.put(Modifier.STATIC | Modifier.PROTECTED, readImage(loc, "_static_protected"));
return icons;
}
private Image readImage(String iconLoc, String kind) {
String fullPath = iconLoc + kind + ".png";
URL loc = this.getClass().getResource(fullPath);
if (loc == null) {
return null;
} else {
Image i = new ImageIcon(loc).getImage();
return i;
}
}
protected String getMemberName() {
return member.getName();
}
abstract protected String getArguments();
abstract protected String getReturnType();
abstract protected Image getIcon();
}
/**
* Renders a Method
* @author Ayman Al-Sairafi
*/
class MethodCell extends MemberCell {
private final Method method;
public MethodCell(JList list, boolean isSelected, Color backColor, Method method, Class clazz) {
super(list, isSelected, backColor, method, clazz);
this.method = method;
}
@Override
protected String getArguments() {
return ReflectUtils.getParamsString(method.getParameterTypes());
}
@Override
protected String getReturnType() {
return method.getReturnType().getSimpleName();
}
@Override
protected Image getIcon() {
int type = method.getModifiers() & 0xf; // only get public/private/protected/static
if (icons == null) {
icons = readIcons(METHOD_ICON_LOC);
}
return icons.get(type);
}
private static Map icons = null;
public static final String METHOD_ICON_LOC = "/META-INF/images/completions/method";
}
/**
* Renders a Field
* @author Ayman Al-Sairafi
*/
class FieldCell extends MemberCell {
private final Field field;
public FieldCell(JList list, boolean isSelected, Color backColor, Field field, Class clazz) {
super(list, isSelected, backColor, field, clazz);
this.field = field;
}
@Override
protected String getArguments() {
return "";
}
@Override
protected String getReturnType() {
return field.getType().getSimpleName();
}
@Override
protected Image getIcon() {
int type = field.getModifiers() & 0xf; // only get public/private/protected/static
if (icons == null) {
icons = readIcons(FIELD_ICON_LOC);
}
if (icons.get(type) == null) {
System.err.println("Unable to get icon for type: " + field.getModifiers());
}
return icons.get(type);
}
private static Map icons = null;
public static final String FIELD_ICON_LOC = "/META-INF/images/completions/field";
}
/**
* Renders a Field
* @author Ayman Al-Sairafi
*/
class ConstructorCell extends MemberCell {
private final Constructor cons;
public ConstructorCell(JList list, boolean isSelected, Color backColor, Constructor cons, Class clazz) {
super(list, isSelected, backColor, cons, clazz);
this.cons = cons;
}
@Override
protected String getMemberName() {
return cons.getDeclaringClass().getSimpleName();
}
@Override
protected String getArguments() {
return ReflectUtils.getParamsString(cons.getParameterTypes());
}
@Override
protected String getReturnType() {
return cons.getDeclaringClass().getSimpleName();
}
@Override
protected Image getIcon() {
int type = cons.getModifiers() & 0x7; // only get public/private/protected, mask out static
if (icons == null) {
icons = readIcons(FIELD_ICON_LOC);
}
if (icons.get(type) == null) {
System.out.println("Unable to get icon for type: " + cons.getModifiers());
}
return icons.get(type);
}
private static Map icons = null;
public static final String FIELD_ICON_LOC = "/META-INF/images/completions/constructor";
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