root / tags / v2_0_0_Build_2011 / libraries / libFMap_mapcontext / src / org / gvsig / fmap / mapcontext / layers / FLayer.java @ 33562
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.fmap.mapcontext.layers; |
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import java.awt.Graphics2D; |
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import java.awt.Image; |
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import java.awt.geom.Point2D; |
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import java.awt.image.BufferedImage; |
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import java.net.URI; |
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import java.util.List; |
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import java.util.Map; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IProjection; |
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import org.cresques.geo.Projected; |
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import org.gvsig.compat.print.PrintAttributes; |
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import org.gvsig.fmap.dal.DataStore; |
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import org.gvsig.fmap.dal.exception.ReadException; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.fmap.mapcontext.MapContext; |
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import org.gvsig.fmap.mapcontext.ViewPort; |
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import org.gvsig.fmap.mapcontext.exceptions.LoadLayerException; |
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import org.gvsig.fmap.mapcontext.exceptions.ReloadLayerException; |
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import org.gvsig.fmap.mapcontext.exceptions.StartEditionLayerException; |
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import org.gvsig.fmap.mapcontext.layers.operations.ComposedLayer; |
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import org.gvsig.metadata.Metadata; |
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import org.gvsig.tools.dispose.Disposable; |
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import org.gvsig.tools.exception.BaseException; |
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import org.gvsig.tools.persistence.Persistent; |
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import org.gvsig.tools.task.Cancellable; |
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/**
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* <p>Definition of the basic functionality that all kind of <i>FMap</i> layers should implement.</p>
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*
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* <p>This kind of layers store their data, are drawable, projectable (with a projection), can be a node of a tree of layers, and
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* could be editable and have a cache with previous draws. They also can be visible or not, and active or not.</p>
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*
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* <p>A layer can also store information about errors produced working with it, and have a name (kind of layer) and
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* a brief summary explaining what's for.</p>
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*
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* <p>Each particular implementation can add new properties, and limit or expand the functionality.</p>
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*
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* @see Projected
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*/
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public interface FLayer extends Projected, Persistent, Metadata, Disposable |
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{ |
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public final String METADATA_DEFINITION_NAME = "Layer"; |
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public final String METADATA_DEFINITION_DESCRIPTION = "Basic layer metadata definition"; |
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public static final String METADATA_CRS = DataStore.METADATA_CRS; |
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public static final String METADATA_NAME = "name"; |
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// /**
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// * <p>Returns an entity that represents this layer.</p>
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// *
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// * <p>This XML entity has elements that represent and store information about this layer.</p>
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// *
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// * @return an XML entity with information of this layer
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// * @throws XMLException if there is an error obtaining the object.
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// *
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// * @see #setXMLEntity(XMLEntity)
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// * @see #setXMLEntity03(XMLEntity)
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// */
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// XMLEntity getXMLEntity() throws XMLException;
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//
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// /**
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// * <p>Inserts information to this layer from an XML entity.</p>
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// *
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// * <p>This XML entity has elements that represent and store information about this layer.</p>
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// *
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// * @param xml an <code>XMLEntity</code> with the information
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// *
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// * @throws XMLException if there is an error setting the object.
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// *
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// * @see #getXMLEntity()
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// * @see #setXMLEntity03(XMLEntity)
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// */
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// void setXMLEntity(XMLEntity xml) throws XMLException;
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/**
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* <p>Changes the status of this layer to active or inactive.</p>
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* <p>One layer is active if is selected in TOC.</p>
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*
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* @param selected the boolean to be set
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*
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* @see #isActive()
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*/
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void setActive(boolean selected); |
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/**
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* <p>Returns if this layer is active or not in TOC.</p>
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* <p>One layer is active if is selected in TOC.</p>
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*
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* @return <code>true</code> if this layer is active; <code>false</code> otherwise
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*
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* @see #setActive(boolean)
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*/
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boolean isActive();
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/**
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* Sets a name to this layer.
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*
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* @param name the string that is to be this layer's name
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*
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* @see #getName()
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*/
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void setName(String name); |
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/**
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* Returns the name of this layer.
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*
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* @return an string with this layer's name
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*
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* @see #setName(String)
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*/
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String getName();
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/**
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* <p>Executes the initialization operations of this layer. This method is invoked
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* only one time during the life of this layer and just before visualize it.</p>
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*
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* @throws org.gvsig.fmap.drivers.reading.DriverIOException if fails loading the layer.
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*
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* @see #reload()
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*/
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void load() throws LoadLayerException; |
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/**
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* <p>Changes the status of this layer to visible or not.</p>
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* <p>One layer is visible if it's check box associated is selected. This means
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* that layer will tried to be painted. If the data associated isn't available,
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* then this property will change to <code>false</code>.</p>
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*
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* @param visibility the boolean to be set
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*
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* @see #isVisible()
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* @see #visibleRequired()
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* @see #isAvailable()
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*/
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void setVisible(boolean visibility); |
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/**
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* <p>Returns if this layer is visible and available.</p>
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* <p>One layer is visible if it's check box associated is selected. This means
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* that layer will tried to be painted.</p>
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* <p>One layer is available if the source of data is on-line.</p>
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* <p>It's probably that one layer selected hadn't available it's data, for example
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* in a remote service.</p>
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*
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* @return <code>true</code> if this layer is visible and available; <code>false</code> otherwise
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*
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* @see #isAvailable()
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* @see #setAvailable(boolean)
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* @see #visibleRequired()
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*/
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boolean isVisible();
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/**
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* Returns the parent {@link FLayers FLayers} node of this layer.
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*
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* @return the parent of this layer, or <code>null</code> if hasn't parent
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*
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* @see #setParentLayer(FLayers)
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*/
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public FLayers getParentLayer();
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/**
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* <p>Returns a reference to the model of this layer, or null if this layer has no model.</p>
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*
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* @return the model of this layer
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*/
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public MapContext getMapContext();
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/**
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* Inserts the parent {@link FLayers FLayers} node of the layer.
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*
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* @param root a <code>FLayers</code> object
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*
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* @see #getParentLayer()
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*/
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public void setParentLayer(FLayers root); |
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/**
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* Returns the full extension of the layer node.
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*
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* @return location and dimension of this layer node
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*
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* @throws ReadException if fails the driver used in this method.
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*/
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Envelope getFullEnvelope() throws ReadException;
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/**
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* Draws the layer using a buffer.
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*
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* @param image an image used to accelerate the screen draw
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* @param g for rendering 2-dimensional shapes, text and images on the Java(tm) platform
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* @param viewPort information for drawing this layer
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* @param cancel an object thread that implements the <code>Cancellable</code> interface, and will allow to cancel the draw
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* @param scale value that represents the scale
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*
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* @throws ReadException if fails the driver used in this method.
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*
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* @see #print(Graphics2D, ViewPort, Cancellable, double, PrintAttributes)
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*/
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void draw(BufferedImage image, Graphics2D g, ViewPort viewPort, |
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Cancellable cancel,double scale) throws ReadException; |
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/**
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* Prints this layer according to some properties requested.
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*
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* @param g for rendering 2-dimensional shapes, text and images on the Java(tm) platform
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* @param viewPort the information for drawing the layers
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* @param cancel an object thread that implements the {@link Cancellable Cancellable} interface, and will allow to cancel the draw
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* @param scale the scale of the view. Must be between {@linkplain FLayer#getMinScale()} and {@linkplain FLayer#getMaxScale()}.
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* @param properties a set with the settings to be applied to a whole print job and to all the docs in the print job
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*
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* @throws ReadException if fails the driver used in this method.
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*
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* @see #draw(BufferedImage, Graphics2D, ViewPort, Cancellable, double)
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*/
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void print(Graphics2D g, ViewPort viewPort, Cancellable cancel, double scale, PrintAttributes properties) |
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throws ReadException;
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/**
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* Inserts the transformation coordinates.
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*
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* @param ct transformation coordinates
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*
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* @see #getCoordTrans()
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*/
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void setCoordTrans(ICoordTrans ct);
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/**
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* Returns the transformation coordinates.
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*
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* @return transformation coordinates
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*
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* @see #setCoordTrans(ICoordTrans)
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*/
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ICoordTrans getCoordTrans(); |
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/**
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* Adds a <code>LayerListener</code> to the listener list.
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*
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* @param o a layer listener
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*
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* @return <code>true</code> if hasn't been any problem during the insertion of the listener
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*
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* @see #getLayerListeners()
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* @see #removeLayerListener(LayerListener)
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*/
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public boolean addLayerListener(LayerListener o); |
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/**
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* Returns all <code>LayerListener</code>s of this layer as an array.
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*
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* @return an array with all layer listeners associated to this layer
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*
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* @see #addLayerListener(LayerListener)
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* @see #removeLayerListener(LayerListener)
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*/
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public LayerListener[] getLayerListeners(); |
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/**
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* Removes the <code>LayerListener</code> argument from this layer.
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*
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* @param o a layer listener
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*
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* @return <code>true</code> if hasn't been any problem doing this process
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*
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* @see #addLayerListener(LayerListener)
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* @see #getLayerListeners()
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*/
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public boolean removeLayerListener(LayerListener o); |
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/**
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* <p>Returns if the value of <code>scale</code> argument
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* is within the maximum and minimum scale of this layer.</p>
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*
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* @param scale the scale > 0
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*
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* @return <code>true</code> if the <code>scale</code> argument is within the range of scales of this layer; <code>false</code> otherwise
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*
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* @see #setMinScale(double)
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* @see #setMaxScale(double)
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*/
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public boolean isWithinScale(double scale); |
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/**
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* Returns the minimum scale visible. Lower scales won't be drawn.
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*
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* @return the minimum scale > 0, -1 if not defined
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*
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* @see #setMinScale(double)
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*/
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public double getMinScale(); |
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/**
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* Returns the maximum scale visible. Higher scales won't be drawn.
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*
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* @return the maximum scale > 0, -1 if not defined
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*
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* @see #setMaxScale(double)
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*/
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public double getMaxScale(); |
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/**
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* Sets the minimum scale visible. Lower scales won't be drawn.
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*
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* @param minScale the scale > 0, -1 if not defined
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*
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* @see #getMinScale()
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*/
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public void setMinScale(double minScale); |
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/**
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* Sets the maximum scale visible. Higher scales won't be drawn.
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*
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* @param maxScale the scale > 0, -1 if not defined
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*
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* @see #getMaxScale()
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*/
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public void setMaxScale(double maxScale); |
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/**
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* <p>Changes the status of this layer to editable or not.</p>
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* <p>One layer is editable if user can modify its information with graphical tools.</p>
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*
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* @param b the boolean to be set
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*
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* @throws com.iver.cit.gvsig.fmap.edition.EditionException if fails enabling for edition this kind of layer.
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*
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* @see #isEditing()
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*/
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public void setEditing(boolean b) throws StartEditionLayerException; |
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/**
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* <p>Returns if this layer is editable.</p>
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* <p>One layer is editable if user can modify its information with graphical tools.</p>
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*
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* @return <code>true</code> if this layer is editable; <code>false</code> otherwise
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*
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* @see #setEditing(boolean)
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*/
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public boolean isEditing(); |
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/**
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* Returns the image icon that will be shown in the TOC next to this layer.
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*
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* @return a String reference to the image icon, or <code>null</code> if there isn't any
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*/
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public String getTocImageIcon(); |
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/**
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* <p>Returns if this layer appears in the TOC.</p>
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* <p>If doesn't appears, remains in the view and in the project.</p>
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*
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* @return <code>true</code> if this layer appears in the TOC; <code>false</code> otherwise
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*/
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boolean isInTOC();
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/**
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* <p>Sets that this layer appears or not in the TOC.</p>
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*
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* @param b <code>true</code> if appears in the TOC; <code>false</code> otherwise
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*/
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void setInTOC(boolean b); |
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/**
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* Returns the status of this layer.
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*
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* @return the status stored in a <code>FLayerStatus</code> object
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*
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* @see #setFLayerStatus(FLayerStatus)
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*/
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public FLayerStatus getFLayerStatus();
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/**
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* Sets the status of this layer.
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*
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* @param status information of the status for this layer
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*
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* @see #getFLayerStatus()
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*/
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public void setFLayerStatus(FLayerStatus status); |
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/*
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* This stuff is to save error's info that causes
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* unavailable status.
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* */
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/**
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* <p>Returns if this layer hasn't got errors.</p>
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*
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* @return <code>true</code> if this layer hasn't got errors; <code>false</code> otherwise
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*/
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public boolean isOk(); |
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/**
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* Returns the number of errors which causes this layer to be in unavailable status.
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*
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* @return number of errors >= 0
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*
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* @see #getError(int)
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* @see #getErrors()
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*/
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public int getNumErrors(); |
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/**
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* Returns the specified error.
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*
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* @param i index of the error >= 0 && < <code>getNumErrors</code>
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*
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* @return a singular error
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*
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* @see #getNumErrors()
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* @see #getErrors()
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*/
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public BaseException getError(int i); |
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/**
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* Adds an error reason that describes this layer's wrong status.
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*
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* @param error
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* a <code>BaseException</code> with the information of the error
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*
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* @see #getNumErrors()
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* @see #getError(int)
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* @see #getErrors()
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*/
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public void addError(BaseException exception); |
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/**
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* Returns a list with all layer errors.
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*
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* @return an <code>ArrayList</code> with the errors
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*
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* @see #getError(int)
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* @see #getNumErrors()
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*/
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public List getErrors(); |
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/**
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* <p>Changes the status of availability of this layer.</p>
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* <p>One layer is available if the source of data is on-line.</p>
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*
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* @param the boolean to be set
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*
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* @see #isAvailable()
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*/
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public void setAvailable(boolean available); |
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/**
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* <p>Returns the status of availability of this layer.</p>
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* <p>One layer is available if the source of data is on-line.</p>
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*
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* @return <code>true</code> if the source of data is on-line; <code>false</code> otherwise
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*
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* @see #setAvailable(boolean)
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* @see #isVisible()
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*/
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public boolean isAvailable(); |
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/**
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* <p>
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* Tries recover a layer of a possible error.
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* </p>
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* <p>
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494 |
* If it has any problem during the load, marks the availability to false
|
495 |
* and throws an exception.
|
496 |
* </p>
|
497 |
*
|
498 |
* @throws ReloadLayerException
|
499 |
* if it's thrown a <code>ReadException</code> or an
|
500 |
* <code>IOException</code> during the load of this layer.
|
501 |
*
|
502 |
* @see #load()
|
503 |
*/
|
504 |
public void reload() throws ReloadLayerException; |
505 |
|
506 |
/**
|
507 |
* Returns <code>true</code> if this layer has the visible status enabled.
|
508 |
*
|
509 |
* @return <code>true</code> if visible this layer has the visible status enabled, otherwise <code>false</code>
|
510 |
*
|
511 |
* @see #isVisible()
|
512 |
* @see #setVisible(boolean)
|
513 |
*/
|
514 |
boolean visibleRequired();
|
515 |
/**
|
516 |
* Returns an string with the information of this layer.
|
517 |
*
|
518 |
* @return the string that is to be this component's information
|
519 |
*/
|
520 |
public String getInfoString(); |
521 |
/**
|
522 |
* <p>Returns the writing status of this layer.</p>
|
523 |
* <p>One layer is writable if there is a writing driver for this layer.</p>
|
524 |
*
|
525 |
* @return <code>true</code> if there is a writing driver for this layer; <code>false</code> otherwise
|
526 |
*/
|
527 |
public boolean isWritable(); |
528 |
|
529 |
/**
|
530 |
* <p>This method can be used to have a fast cloned layer.</p>
|
531 |
* <p>The implementations should take care of not recreate this layer. Instead of this,
|
532 |
* is better to use the same source (driver) and <i>deepclone</i> the legend. Exception:
|
533 |
* the labels aren't <i>deepcloned</i> to avoid memory consumption.</p>
|
534 |
* <p><i>Note</i>: Labels are memory consuming to speed up layers like PostGIS and so on.</p>
|
535 |
*
|
536 |
* @return a layer that is a clonation of this layer
|
537 |
*
|
538 |
* @throws java.lang.Exception any exception produced during the cloning of this layer.
|
539 |
*/
|
540 |
public FLayer cloneLayer() throws Exception; |
541 |
|
542 |
|
543 |
|
544 |
/**
|
545 |
* <p>Returns a reference to an object (property) associated to this layer.</p>
|
546 |
*
|
547 |
* <p>For example, you can attach a network definition to key "network" and check
|
548 |
* if a layer has a network loaded using <i>getAssociatedObject("network")</i> and
|
549 |
* that it's not null.</p>
|
550 |
*
|
551 |
* @param key the key associated to the property
|
552 |
*
|
553 |
* @return <code>null</code> if key is not found
|
554 |
*
|
555 |
* @see #getExtendedProperties()
|
556 |
* @see #setProperty(Object, Object)
|
557 |
*/
|
558 |
public Object getProperty(Object key); |
559 |
|
560 |
/**
|
561 |
* Insets an object as a property to this layer.
|
562 |
*
|
563 |
* @param key the key associated to the property
|
564 |
* @param obj the property
|
565 |
*
|
566 |
* @see #getProperty(Object)
|
567 |
* @see #getExtendedProperties()
|
568 |
*/
|
569 |
public void setProperty(Object key, Object obj); |
570 |
/**
|
571 |
* Returns a hash map with all new properties associated to this layer.
|
572 |
*
|
573 |
* @return hash table with the added properties
|
574 |
*
|
575 |
* @see #getProperty(Object)
|
576 |
* @see #setProperty(Object, Object)
|
577 |
*/
|
578 |
public Map getExtendedProperties(); |
579 |
|
580 |
/**
|
581 |
* <p>Returns a new instance of {@link ComposedLayer ComposedLayer}.</p>
|
582 |
*
|
583 |
* <p>This allows make a single draw for a group
|
584 |
* of layers with the same source.</p>
|
585 |
*
|
586 |
* <p>If this operation isn't applicable for this
|
587 |
* kind of layer, this method returns null.</p>
|
588 |
*
|
589 |
* <p>By default this operation is not supported.</p>
|
590 |
*
|
591 |
* @see org.gvsig.fmap.mapcontext.layers.operations.ComposedLayer
|
592 |
*
|
593 |
* @return a new composed layer or <code>null</code> if not supported
|
594 |
*/
|
595 |
public ComposedLayer newComposedLayer();
|
596 |
|
597 |
/**
|
598 |
* Returns the image icon that will be shown in the TOC next to this layer, according its status.
|
599 |
*
|
600 |
* @return the image
|
601 |
*/
|
602 |
Image getTocStatusImage();
|
603 |
|
604 |
// M?todos para la utilizaci?n de HyperLinks
|
605 |
|
606 |
/**
|
607 |
* Returns information about if the layer allows HyperLink or not
|
608 |
* @return boolean true if allows Link, false if not
|
609 |
*/
|
610 |
public boolean allowLinks(); |
611 |
|
612 |
/**
|
613 |
* Returns an instance of AbstractLinkProperties that contains the information
|
614 |
* of the HyperLink
|
615 |
* @return Abstra
|
616 |
*/
|
617 |
public AbstractLinkProperties getLinkProperties();
|
618 |
|
619 |
/**
|
620 |
* Provides an array with URIs. Returns one URI by geometry that includes the point
|
621 |
* in its own geometry limits with a allowed tolerance.
|
622 |
* @param layer, the layer
|
623 |
* @param point, the point to check that is contained or not in the geometries in the layer
|
624 |
* @param tolerance, the tolerance allowed. Allowed margin of error to detect if the point
|
625 |
* is contained in some geometries of the layer
|
626 |
* @return
|
627 |
* @throws ReadException
|
628 |
* @throws BehaviorException
|
629 |
*/
|
630 |
public URI[] getLink(Point2D point, double tolerance) throws ReadException; |
631 |
|
632 |
|
633 |
/**
|
634 |
* <p>Inserts the projection to this layer.</p>
|
635 |
*
|
636 |
* @param proj information about the new projection
|
637 |
*
|
638 |
*/
|
639 |
public void setProjection(IProjection proj); |
640 |
|
641 |
public long getDrawVersion(); |
642 |
|
643 |
} |