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Experimental components for JavaFX 2
/**
* BreadcrumbBar.java
*
* Copyright (c) 2011-2015, JFXtras
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the organization nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package jfxtras.labs.scene.control;
import java.util.ArrayList;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.ReadOnlyListProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.beans.property.SimpleListProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.scene.Node;
import javafx.scene.control.Control;
import javafx.scene.image.Image;
import javafx.scene.input.MouseEvent;
import javafx.scene.shape.SVGPath;
import jfxtras.labs.util.BreadcrumbBarEventHandler;
/**
* The container that will host BreadcrumbItem.
*
* @author Thierry Wasylczenko
*/
public class BreadcrumbBar extends Control {
private static final String DEFAULT_STYLE_CLASS = "breadcrumbbar";
private final ReadOnlyListProperty items = new SimpleListProperty(FXCollections.observableArrayList(new ArrayList()));
private final ObjectProperty homeItem = new SimpleObjectProperty();
private final ObjectProperty onItemAction = new SimpleObjectProperty();
/**
* Create a new BreadcrumbBar.
*/
public BreadcrumbBar() {
getStyleClass().add(DEFAULT_STYLE_CLASS);
setPrefHeight(30);
setPrefWidth(200);
this.onItemAction.addListener(new ChangeListener() {
@Override
public void changed(ObservableValue observable, BreadcrumbBarEventHandler oldValue, BreadcrumbBarEventHandler newValue) {
if (oldValue != null) {
for (BreadcrumbItem i : itemsProperty()) {
i.removeEventHandler(MouseEvent.MOUSE_CLICKED, oldValue);
}
}
if (newValue != null) {
for (BreadcrumbItem i : itemsProperty()) {
i.addEventHandler(MouseEvent.MOUSE_CLICKED, newValue);
}
}
}
});
this.items.get().addListener(new ListChangeListener() {
@Override
public void onChanged(Change c) {
// Adding the onActionItem
while (c.next()) {
if (c.wasAdded() && onItemAction.get() != null) {
for (BreadcrumbItem i : c.getAddedSubList()) {
i.addEventHandler(MouseEvent.MOUSE_CLICKED, getOnItemAction());
}
}
}
c.reset();
// Updating the firstProperty() of each item
synchronized (BreadcrumbBar.this.itemsProperty()) {
for (BreadcrumbItem item : BreadcrumbBar.this.itemsProperty()) {
((SimpleBooleanProperty) item.firstProperty()).set(items.indexOf(item) == 0);
}
}
}
});
}
/**
* Contains all items added to the bar. The property won't never be null.
*
* @return the list of items in the bar.
*/
public final ReadOnlyListProperty itemsProperty() {
return this.items;
}
/**
* The item considered ad home for the bar. The value of this property will
* be null if the item has not been initialized. The home item is not
* mandatory.
*
* @return the home item if any.
*/
public final ObjectProperty homeItemProperty() {
return this.homeItem;
}
/**
* Get the BreadcrumbItem considered as home for this bar.
*
* @return The item if any, null otherwise.
*/
public final BreadcrumbItem getHomeItem() {
return this.homeItemProperty().get();
}
/**
* Set the home item for the bar.
*
* @param homeItem
*/
public final void setHomeItem(BreadcrumbItem homeItem) {
this.homeItemProperty().set(homeItem);
}
/**
* Get the event handler that is applied to each item in the bar.
*
* @return the event handler if any, null otherwise.
*/
public final ObjectProperty onItemActionProperty() {
return this.onItemAction;
}
/**
* Get the event handler that is applied to each item in the bar.
*
* @return the event handler if any, null otherwise.
*/
public final BreadcrumbBarEventHandler getOnItemAction() {
return this.onItemActionProperty().get();
}
/**
* Define the event handler that will be applied to each item in the bar. If
* a previous handler has been defined, it will be removed for every item
* present in the bar. If the new handler is null, only the older one is
* removed for every item.
*
* @param handler the new handler that will be executed for a click on each
* item in the bar.
*/
public final void setOnItemAction(BreadcrumbBarEventHandler handler) {
this.onItemActionProperty().set(handler);
}
/**
* Add a new item at the end of the bar. If the item null, nothing is
* performed.
*
* @param item the item to add in the bar.
* @return The added item.
*/
public final BreadcrumbItem addItem(final BreadcrumbItem item) {
if (item != null) {
itemsProperty().add(item);
}
return item;
}
/**
* Define the home item for this bar. The home item will always be the first
* item of the bar. If a previous home item has been set it will be
* replaced.
*
* @param content the content of the home item.
* @return The home item.
*/
public final BreadcrumbItem addHome(Node content) {
Image icon = new Image(getClass().getResource("/jfxtras/labs/internal/scene/control/home.png").toExternalForm());
BreadcrumbItem hItem = new BreadcrumbItem(this, "", icon, content);
if (getHomeItem() == null) {
((SimpleListProperty) this.itemsProperty()).add(0, hItem);
} else {
((SimpleListProperty) this.itemsProperty()).set(0, hItem);
}
setHomeItem(hItem);
return hItem;
}
/**
* Create a new item in the bar.
*
* @param text The text of the item, could be null
* @param icon The icon of the item, could be null
* @param content The content of the item, could be null
* @return The added item.
*/
public final BreadcrumbItem addItem(String text, Image icon, Node content) {
final BreadcrumbItem item = new BreadcrumbItem(this, text, icon, content);
return addItem(item);
}
/**
* Create a new item in the bar.
*
* @param text The text of the item, could be null
* @param svgIcon The SVG icon of the item, could be null
* @param content The content of the item, could be null
* @return The added item.
*/
public final BreadcrumbItem addItem(String text, SVGPath svgIcon, Node content) {
final BreadcrumbItem item = new BreadcrumbItem(this, text, svgIcon, content);
return addItem(item);
}
/**
* Create a new item in the bar without an icon.
*
* @param text The text of the item, could be null
* @param content The content of the item, could be null
* @return The added item.
* @return
*/
public final BreadcrumbItem addItem(String text, Node content) {
final BreadcrumbItem item = new BreadcrumbItem(this, text, (Image) null, content);
return addItem(item);
}
/**
* Create a new item in the bar with no text.
*
* @param icon The icon of the item, could be null
* @param content The content of the item, could be null
* @return The added item.
*/
public final BreadcrumbItem addItem(Image icon, Node content) {
final BreadcrumbItem item = new BreadcrumbItem(this, null, icon, content);
return addItem(item);
}
/**
* Remove an item and every following items in the bar.
*
* @param item The item to remove.
* @return true if something has been deleted, false otherwise.
*/
public final boolean removeItem(BreadcrumbItem item) {
boolean deleted = false;
if (item != null) {
int index = this.items.indexOf(item);
if (index == this.items.size() - 1) {
deleted = ((SimpleListProperty) this.itemsProperty()).remove(item);
} else if (index < this.items.size()) {
int previousSize = this.items.size();
((SimpleListProperty) this.itemsProperty()).remove(index, this.items.size());
deleted = previousSize > this.items.size();
}
}
return deleted;
}
/**
* Remove the item at the given index and every following item.
*
* @param index the index of the item to remove.
* @return true if something has been deleted, false otherwise.
*/
public final boolean removeItem(int index) {
boolean deleted = false;
if (index >= 0 && index < this.itemsProperty().getSize()) {
deleted = removeItem(this.itemsProperty().get(index));
}
return deleted;
}
@Override
public String getUserAgentStylesheet() {
return getClass().getResource("/jfxtras/labs/internal/scene/control/" + getClass().getSimpleName() + ".css").toExternalForm();
}
}
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