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/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.terminal.gwt.client;
import com.google.gwt.core.client.JsArrayString;
import com.google.gwt.dom.client.Element;
public class MeasuredSize {
public static class MeasureResult {
private final boolean widthChanged;
private final boolean heightChanged;
private MeasureResult(boolean widthChanged, boolean heightChanged) {
this.widthChanged = widthChanged;
this.heightChanged = heightChanged;
}
public boolean isHeightChanged() {
return heightChanged;
}
public boolean isWidthChanged() {
return widthChanged;
}
public boolean isChanged() {
return heightChanged || widthChanged;
}
}
private int width = -1;
private int height = -1;
private int[] paddings = new int[4];
private int[] borders = new int[4];
private int[] margins = new int[4];
private FastStringSet dependents = FastStringSet.create();
public int getOuterHeight() {
return height;
}
public int getOuterWidth() {
return width;
}
public void addDependent(String pid) {
dependents.add(pid);
}
public void removeDependent(String pid) {
dependents.remove(pid);
}
public boolean hasDependents() {
return !dependents.isEmpty();
}
public JsArrayString getDependents() {
return dependents.dump();
}
private static int sumWidths(int[] sizes) {
return sizes[1] + sizes[3];
}
private static int sumHeights(int[] sizes) {
return sizes[0] + sizes[2];
}
public int getInnerHeight() {
return height - sumHeights(margins) - sumHeights(borders)
- sumHeights(paddings);
}
public int getInnerWidth() {
return width - sumWidths(margins) - sumWidths(borders)
- sumWidths(paddings);
}
public boolean setOuterHeight(int height) {
if (this.height != height) {
this.height = height;
return true;
} else {
return false;
}
}
public boolean setOuterWidth(int width) {
if (this.width != width) {
this.width = width;
return true;
} else {
return false;
}
}
public int getBorderHeight() {
return sumHeights(borders);
}
public int getBorderWidth() {
return sumWidths(borders);
}
public int getPaddingHeight() {
return sumHeights(paddings);
}
public int getPaddingWidth() {
return sumWidths(paddings);
}
public int getMarginHeight() {
return sumHeights(margins);
}
public int getMarginWidth() {
return sumWidths(margins);
}
public int getMarginTop() {
return margins[0];
}
public int getMarginRight() {
return margins[1];
}
public int getMarginBottom() {
return margins[2];
}
public int getMarginLeft() {
return margins[3];
}
public int getBorderTop() {
return margins[0];
}
public int getBorderRight() {
return margins[1];
}
public int getBorderBottom() {
return margins[2];
}
public int getBorderLeft() {
return margins[3];
}
public int getPaddingTop() {
return paddings[0];
}
public int getPaddingRight() {
return paddings[1];
}
public int getPaddingBottom() {
return paddings[2];
}
public int getPaddingLeft() {
return paddings[3];
}
public MeasureResult measure(Element element) {
boolean heightChanged = false;
boolean widthChanged = false;
ComputedStyle computedStyle = new ComputedStyle(element);
int[] paddings = computedStyle.getPadding();
if (!heightChanged && hasHeightChanged(this.paddings, paddings)) {
heightChanged = true;
}
if (!widthChanged && hasWidthChanged(this.paddings, paddings)) {
widthChanged = true;
}
this.paddings = paddings;
int[] margins = computedStyle.getMargin();
if (!heightChanged && hasHeightChanged(this.margins, margins)) {
heightChanged = true;
}
if (!widthChanged && hasWidthChanged(this.margins, margins)) {
widthChanged = true;
}
this.margins = margins;
int[] borders = computedStyle.getBorder();
if (!heightChanged && hasHeightChanged(this.borders, borders)) {
heightChanged = true;
}
if (!widthChanged && hasWidthChanged(this.borders, borders)) {
widthChanged = true;
}
this.borders = borders;
int requiredHeight = Util.getRequiredHeight(element);
int marginHeight = sumHeights(margins);
if (setOuterHeight(requiredHeight + marginHeight)) {
heightChanged = true;
}
int requiredWidth = Util.getRequiredWidth(element);
int marginWidth = sumWidths(margins);
if (setOuterWidth(requiredWidth + marginWidth)) {
widthChanged = true;
}
return new MeasureResult(widthChanged, heightChanged);
}
private static boolean hasWidthChanged(int[] sizes1, int[] sizes2) {
return sizes1[1] != sizes2[1] || sizes1[3] != sizes2[3];
}
private static boolean hasHeightChanged(int[] sizes1, int[] sizes2) {
return sizes1[0] != sizes2[0] || sizes1[2] != sizes2[2];
}
}
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