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/*
* Copyright (c) 2018 Alan Snyder.
* All rights reserved.
*
* You may not use, copy or modify this file, except in compliance with the license agreement. For details see
* accompanying license terms.
*/
/*
* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.violetlib.aqua;
import java.awt.*;
import java.beans.PropertyChangeEvent;
import javax.swing.*;
import javax.swing.event.DocumentEvent;
import javax.swing.text.*;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* Supports UI behavior specific to JTextField. This code copied from BasicTextFieldUI.
*/
public class AquaTextFieldUIDelegate implements AquaTextComponentUIDelegate {
@Override
public @NotNull String getPropertyPrefix() {
return "TextField";
}
@Override
public void install(@NotNull JTextComponent c) {
}
@Override
public void uninstall(@NotNull JTextComponent c) {
}
@Override
public boolean propertyChange(@NotNull PropertyChangeEvent ev) {
return false;
}
@Override
public @Nullable EditorKit getEditorKit(@NotNull JTextComponent c) {
return null;
}
@Override
public @Nullable View create(@NotNull JTextComponent c, Element elem) {
Document doc = elem.getDocument();
Object i18nFlag = doc.getProperty("i18n"/*AbstractDocument.I18NProperty*/);
if (Boolean.TRUE.equals(i18nFlag)) {
// To support bidirectional text, we build a more heavyweight
// representation of the field.
String kind = elem.getName();
if (kind != null) {
if (kind.equals(AbstractDocument.ContentElementName)) {
return new GlyphView(elem){
@Override
public float getMinimumSpan(int axis) {
// no wrap
return getPreferredSpan(axis);
}
};
} else if (kind.equals(AbstractDocument.ParagraphElementName)) {
return new I18nFieldView(elem);
}
}
// this shouldn't happen, should probably throw in this case.
}
return new FieldView(elem);
}
@Override
public int getBaseline(@NotNull JTextComponent c, int width, int height) {
View rootView = AquaTextComponentSupport.getRootView(c);
if (rootView.getViewCount() > 0) {
Insets insets = c.getInsets();
height = height - insets.top - insets.bottom;
if (height > 0) {
int baseline = insets.top;
View fieldView = rootView.getView(0);
int vspan = (int)fieldView.getPreferredSpan(View.Y_AXIS);
if (height != vspan) {
int slop = height - vspan;
baseline += slop / 2;
}
if (fieldView instanceof I18nFieldView) {
int fieldBaseline = AquaTextComponentSupport.getBaseline(
fieldView, width - insets.left - insets.right, height);
if (fieldBaseline < 0) {
return -1;
}
baseline += fieldBaseline;
}
else {
FontMetrics fm = c.getFontMetrics(c.getFont());
baseline += fm.getAscent();
}
return baseline;
}
}
return -1;
}
@Override
public @NotNull Component.BaselineResizeBehavior getBaselineResizeBehavior(JTextComponent c) {
return Component.BaselineResizeBehavior.CENTER_OFFSET;
}
@Override
public @Nullable ActionMap getActionMap(@NotNull JTextComponent c) {
return null;
}
private static class I18nFieldView extends ParagraphView {
I18nFieldView(Element elem) {
super(elem);
}
public int getFlowSpan(int index) {
return Integer.MAX_VALUE;
}
protected void setJustification(int j) {
// Justification is done in adjustAllocation(), so disable
// ParagraphView's justification handling by doing nothing here.
}
static boolean isLeftToRight( java.awt.Component c ) {
return c.getComponentOrientation().isLeftToRight();
}
Shape adjustAllocation(Shape a) {
if (a != null) {
Rectangle bounds = a.getBounds();
int vspan = (int) getPreferredSpan(Y_AXIS);
int hspan = (int) getPreferredSpan(X_AXIS);
if (bounds.height != vspan) {
int slop = bounds.height - vspan;
bounds.y += slop / 2;
bounds.height -= slop;
}
// horizontal adjustments
Component c = getContainer();
if (c instanceof JTextField) {
JTextField field = (JTextField) c;
BoundedRangeModel vis = field.getHorizontalVisibility();
int max = Math.max(hspan, bounds.width);
int value = vis.getValue();
int extent = Math.min(max, bounds.width - 1);
if ((value + extent) > max) {
value = max - extent;
}
vis.setRangeProperties(value, extent, vis.getMinimum(),
max, false);
if (hspan < bounds.width) {
// horizontally align the interior
int slop = bounds.width - 1 - hspan;
int align = ((JTextField)c).getHorizontalAlignment();
if(isLeftToRight(c)) {
if(align==LEADING) {
align = LEFT;
}
else if(align==TRAILING) {
align = RIGHT;
}
}
else {
if(align==LEADING) {
align = RIGHT;
}
else if(align==TRAILING) {
align = LEFT;
}
}
switch (align) {
case SwingConstants.CENTER:
bounds.x += slop / 2;
bounds.width -= slop;
break;
case SwingConstants.RIGHT:
bounds.x += slop;
bounds.width -= slop;
break;
}
} else {
// adjust the allocation to match the bounded range.
bounds.width = hspan;
bounds.x -= vis.getValue();
}
}
return bounds;
}
return null;
}
void updateVisibilityModel() {
Component c = getContainer();
if (c instanceof JTextField) {
JTextField field = (JTextField) c;
BoundedRangeModel vis = field.getHorizontalVisibility();
int hspan = (int) getPreferredSpan(X_AXIS);
int extent = vis.getExtent();
int maximum = Math.max(hspan, extent);
extent = (extent == 0) ? maximum : extent;
int value = maximum - extent;
int oldValue = vis.getValue();
if ((oldValue + extent) > maximum) {
oldValue = maximum - extent;
}
value = Math.max(0, Math.min(value, oldValue));
vis.setRangeProperties(value, extent, 0, maximum, false);
}
}
public void paint(Graphics g, Shape a) {
Rectangle r = (Rectangle) a;
g.clipRect(r.x, r.y, r.width, r.height);
super.paint(g, adjustAllocation(a));
}
public int getResizeWeight(int axis) {
if (axis == View.X_AXIS) {
return 1;
}
return 0;
}
public Shape modelToView(int pos, Shape a, Position.Bias b) throws BadLocationException {
return super.modelToView(pos, adjustAllocation(a), b);
}
public Shape modelToView(int p0, Position.Bias b0,
int p1, Position.Bias b1, Shape a)
throws BadLocationException
{
return super.modelToView(p0, b0, p1, b1, adjustAllocation(a));
}
public int viewToModel(float fx, float fy, Shape a, Position.Bias[] bias) {
return super.viewToModel(fx, fy, adjustAllocation(a), bias);
}
public void insertUpdate(DocumentEvent changes, Shape a, ViewFactory f) {
super.insertUpdate(changes, adjustAllocation(a), f);
updateVisibilityModel();
}
public void removeUpdate(DocumentEvent changes, Shape a, ViewFactory f) {
super.removeUpdate(changes, adjustAllocation(a), f);
updateVisibilityModel();
}
}
}
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