OpenConcerto

Dépôt officiel du code source de l'ERP OpenConcerto
sonarqube

svn://code.openconcerto.org/openconcerto

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Rev 17 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 17 Rev 80
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 package org.openconcerto.ui.state;
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 package org.openconcerto.ui.state;
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import java.io.File;
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import java.io.File;
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import java.io.IOException;
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import java.io.IOException;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import java.security.PrivilegedActionException;
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import java.security.PrivilegedExceptionAction;
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// TODO use FilePermission just for this.configFile
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public abstract class AbstractStateManager<T> {
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public abstract class AbstractStateManager<T> {
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    private File configFile;
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    private File configFile;
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    private final T src;
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    private final T src;
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    public abstract void endAutoSave();
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    public abstract void endAutoSave();
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    public final void deleteState() {
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    public final void deleteState() {
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        check();
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        check();
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        AccessController.doPrivileged(new PrivilegedAction<Object>() {
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            @Override
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            public Object run() {
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        this.configFile.delete();
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                getConfigFile().delete();
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                return null;
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            }
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        });
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    }
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    }
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    private void check() {
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    private void check() {
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        if (this.configFile == null)
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        if (this.configFile == null)
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            throw new IllegalStateException("configFile undefined.");
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            throw new IllegalStateException("configFile undefined.");
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    }
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    }
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    public final void saveState() throws IOException {
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    public final void saveState() throws IOException {
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        check();
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        check();
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        this.saveState(this.configFile);
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        this.saveState(this.getConfigFile());
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    }
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    }
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    public final void saveState(File file) throws IOException {
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    public final void saveState(final File file) throws IOException {
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        if (file == null) {
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        if (file == null) {
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            throw new IllegalArgumentException("null File specified");
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            throw new IllegalArgumentException("null File specified");
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        }
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        }
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        try {
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            AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
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                @Override
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                public Object run() throws IOException {
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        if (file.getParentFile() != null && !file.getParentFile().exists()) {
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                    if (file.getParentFile() != null && !file.getParentFile().exists()) {
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            file.getParentFile().mkdirs();
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                        file.getParentFile().mkdirs();
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        }
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                    }
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        writeState(file);
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                    writeState(file);
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                    return null;
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                }
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            });
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        } catch (PrivilegedActionException e) {
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            throw (IOException) e.getCause();
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        }
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    }
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    }
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    /**
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    /**
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     * Should actually write the file.
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     * Should actually write the file.
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     *
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     *
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     */
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     */
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    protected abstract void writeState(File file) throws IOException;
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    protected abstract void writeState(File file) throws IOException;
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    public final boolean loadState() {
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    public final boolean loadState() {
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        check();
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        check();
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        return loadState(this.configFile);
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        return loadState(this.getConfigFile());
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    }
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    }
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    /**
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    /**
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     * Loads the state from the specified file.
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     * Loads the state from the specified file.
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     *
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     *
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     * @param file the file from which to load.
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     * @param file the file from which to load.
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     * @return if the state was restored.
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     * @return if the state was restored.
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     */
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     */
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    public final boolean loadState(File file) {
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    public final boolean loadState(final File file) {
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        return AccessController.doPrivileged(new PrivilegedAction<Boolean>() {
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            @Override
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            public Boolean run() {
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        if (file.exists() && file.length() > 0) {
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                if (file.exists() && file.length() > 0) {
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            this.configFile = file;
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                    setConfigFile(file);
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            return this.readState(file);
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                    return readState(file);
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        } else {
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                } else {
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            return false;
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                    return false;
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        }
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                }
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    }
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            }
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        });
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    }
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    /**
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    /**
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     * Should actually read the file.
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     * Should actually read the file.
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     *
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     *
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     * @param file the file from which to load.
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     * @param file the file from which to load.