Java tutorial
/* * Created on Oct 12, 2004 * * The MIT License * Copyright (c) 2004 Mark Drew * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the Software * is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package org.cfeclipse.frameworks.fusebox.properties; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import org.eclipse.core.resources.IProject; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.QualifiedName; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.util.IPropertyChangeListener; import org.eclipse.jface.util.PropertyChangeEvent; import org.cfeclipse.frameworks.fusebox.FuseboxPlugin; import org.cfeclipse.frameworks.fusebox.util.Utils; /** * This is a property store for a project. It stores all of it's values within * the project via IProject::setPersistentProperty(). While IPreferenceStore * provides methods for setting defaults, these are currently ignored. * * Default value requests are obtained from the global preference store, therefore * allowing global defaults that are applied on a per-project basis. * * @author Oliver Tupman */ public class FuseboxPropertyStore implements IPreferenceStore { public static final String P_FBX_VERSION = "fbxversion"; public static final String P_FBX_VERSION_DEFAULT = "org.cfeclipse.frameworks.fusebox3.parser.FBX3parser"; /** The project that this store wraps to provide the pref store */ private IProject project; /** The list of items that are listenening for property changes */ private ArrayList listeners; /** Temporary list of properties (that have been changed) */ private HashMap props; /** Stores the default values for various items */ private HashMap defaults; private IPreferenceStore globalPrefs; /** * Constructs a property store based upon a project. * * @param srcProject The project that will store the preferences */ public FuseboxPropertyStore(IProject srcProject) { this(); this.project = srcProject; this.listeners = new ArrayList(); this.props = new HashMap(); this.defaults = new HashMap(); //this.defaults.put(ICFMLPreferenceConstants.P_CFML_DICTIONARY, FuseboxPreferenceManager.) this.globalPrefs = FuseboxPlugin.getDefault().getPreferenceStore(); } /** * Constructs a property store without a project. * This class will then store the set properties in a temporary variable * until the project is set. * */ public FuseboxPropertyStore() { super(); this.project = null; this.listeners = new ArrayList(); this.props = new HashMap(); } /** * Gets the project associated with this property store. * * @return The IProject otherwise null if no project is yet associated */ public IProject getProject() { return this.project; } /** * Sets the source project. Transfers the temporary properties to the new * project. * * @param srcProject The project to base this store upon. */ public void setProject(IProject srcProject) { if (srcProject == null) return; this.project = srcProject; Iterator propIter = this.props.keySet().iterator(); while (propIter.hasNext()) { String propName = (String) propIter.next(); this.putValueHandled(propName, (String) this.props.get(propName)); } } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#addPropertyChangeListener(org.eclipse.jface.util.IPropertyChangeListener) */ public void addPropertyChangeListener(IPropertyChangeListener listener) { this.addPropertyChangeListener(listener); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#contains(java.lang.String) */ public boolean contains(String name) { String retVal = null; try { if (this.project != null) retVal = this.project.getPersistentProperty(getQName(name)); else retVal = (String) this.props.get(name); } catch (CoreException ex) { ex.printStackTrace(); } return retVal != null; } public static QualifiedName getQName(String name) { return new QualifiedName("org.cfeclipse.frameworks.fusebox3.", name); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#firePropertyChangeEvent(java.lang.String, java.lang.Object, java.lang.Object) */ public void firePropertyChangeEvent(String name, Object oldValue, Object newValue) { Object srcObj = (this.project != null) ? (Object) project : (Object) this.props; PropertyChangeEvent event = new PropertyChangeEvent(srcObj, name, oldValue, newValue); Iterator listenerIter = this.listeners.iterator(); while (listenerIter.hasNext()) { IPropertyChangeListener listener = (IPropertyChangeListener) listenerIter.next(); listener.propertyChange(event); } } private String getProperty(QualifiedName qName) { String retVal = null; try { if (this.project != null) retVal = this.project.getPersistentProperty(qName); else retVal = (String) this.props.get(qName.getLocalName()); } catch (CoreException ex) { ex.printStackTrace(); } return retVal; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getBoolean(java.lang.String) */ public boolean getBoolean(String name) { if (!this.contains(name)) return getDefaultBoolean(name); String strVal = getProperty(getQName(name)); return strVal.equals("true"); } private String getDefault(String name) { return this.globalPrefs.getDefaultString(name); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultBoolean(java.lang.String) */ public boolean getDefaultBoolean(String name) { return this.globalPrefs.getDefaultBoolean(name); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultDouble(java.lang.String) */ public double getDefaultDouble(String name) { return this.globalPrefs.getDefaultDouble(name); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultFloat(java.lang.String) */ public float getDefaultFloat(String name) { return this.globalPrefs.getDefaultFloat(name); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultInt(java.lang.String) */ public int getDefaultInt(String name) { return this.globalPrefs.getDefaultInt(name); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultLong(java.lang.String) */ public long getDefaultLong(String name) { return this.globalPrefs.getDefaultLong(name); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultString(java.lang.String) */ public String getDefaultString(String name) { return this.globalPrefs.getDefaultString(name); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getDouble(java.lang.String) */ public double getDouble(String name) { if (!this.contains(name)) return getDefaultDouble(name); double retVal = 0.0; try { retVal = Double.parseDouble(getString(name)); } catch (NumberFormatException ex) { } return retVal; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getFloat(java.lang.String) */ public float getFloat(String name) { if (!this.contains(name)) return getDefaultFloat(name); float retVal = 0; try { retVal = Float.parseFloat(getString(name)); } catch (NumberFormatException ex) { } return retVal; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getInt(java.lang.String) */ public int getInt(String name) { if (!this.contains(name)) return getDefaultInt(name); int retVal = 0; try { retVal = Integer.parseInt(getString(name)); } catch (NumberFormatException ex) { } return retVal; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getLong(java.lang.String) */ public long getLong(String name) { if (!this.contains(name)) return getDefaultLong(name); long retVal = 0; try { retVal = Long.parseLong(getString(name)); } catch (NumberFormatException ex) { } return retVal; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#getString(java.lang.String) */ public String getString(String name) { String retVal = ""; if (this.contains(name)) { retVal = getProperty(getQName(name)); } return retVal; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#isDefault(java.lang.String) */ public boolean isDefault(String name) { if (!this.contains(name)) return false; return this.getString(name).equals(this.getDefault(name)); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#needsSaving() */ public boolean needsSaving() { return this.props.size() > 0; } private void putValueHandled(String name, String value) { try { if (this.project != null) this.project.setPersistentProperty(getQName(name), value); this.props.put(name, value); } catch (CoreException ex) { ex.printStackTrace(); } } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#putValue(java.lang.String, java.lang.String) */ public void putValue(String name, String value) { putValueHandled(name, value); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#removePropertyChangeListener(org.eclipse.jface.util.IPropertyChangeListener) */ public void removePropertyChangeListener(IPropertyChangeListener listener) { this.listeners.remove(listener); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String, double) */ public void setDefault(String name, double value) { ; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String, float) */ public void setDefault(String name, float value) { ; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String, int) */ public void setDefault(String name, int value) { ; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String, long) */ public void setDefault(String name, long value) { ; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String, java.lang.String) */ public void setDefault(String name, String defaultObject) { ; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(java.lang.String, boolean) */ public void setDefault(String name, boolean value) { ; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setToDefault(java.lang.String) */ public void setToDefault(String name) { ; } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String, double) */ public void setValue(String name, double value) { this.setValue(name, Double.toString(value)); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String, float) */ public void setValue(String name, float value) { this.setValue(name, Float.toString(value)); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String, int) */ public void setValue(String name, int value) { this.setValue(name, Integer.toString(value)); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String, long) */ public void setValue(String name, long value) { this.setValue(name, Long.toString(value)); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String, java.lang.String) */ public void setValue(String name, String value) { String oldValue = this.getString(name); this.putValueHandled(name, value); this.firePropertyChangeEvent(name, oldValue, value); } /* (non-Javadoc) * @see org.eclipse.jface.preference.IPreferenceStore#setValue(java.lang.String, boolean) */ public void setValue(String name, boolean value) { this.setValue(name, (value) ? "true" : "false"); } }