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/*******************************************************************************
* Copyright (c) 2014 Elphel, Inc.
* Copyright (c) 2006 Elphel, Inc and Excelsior, LLC.
* This file is a part of VDT plug-in.
* VDT plug-in is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* VDT plug-in is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Additional permission under GNU GPL version 3 section 7:
* If you modify this Program, or any covered work, by linking or combining it
* with Eclipse or Eclipse plugins (or a modified version of those libraries),
* containing parts covered by the terms of EPL/CPL, the licensors of this
* Program grant you additional permission to convey the resulting work.
* {Corresponding Source for a non-source form of such a combination shall
* include the source code for the parts of Eclipse or Eclipse plugins used
* as well as that of the covered work.}
*******************************************************************************/
package com.elphel.vdt.ui.variables;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.variables.IDynamicVariable;
import org.eclipse.core.variables.IDynamicVariableResolver;
import org.eclipse.debug.core.DebugException;
import org.eclipse.swt.widgets.Shell;
import com.elphel.vdt.Txt;
import com.elphel.vdt.VDT;
//import com.elphel.vdt.VDTPlugin;
import com.elphel.vdt.veditor.VerilogPlugin;
/**
* Base implementation for variable resolvers that prompt the user
* for their value.
*
* @see org.eclipse.debug.internal.ui.stringsubstitution.PromptingResolver
*
* Created: 02.02.2006
* @author Lvov Konstantin
*/
public abstract class PromptingResolver implements IDynamicVariableResolver {
/**
* A hint that helps the user choose their input. If a prompt
* hint is provider the user will be prompted:
* Please input a value for <code>promptHint</code>
*/
protected String promptHint = null;
/**
* The prompt displayed to the user.
*/
protected String dialogMessage = null;
/**
* The default value selected when the prompt is displayed
*/
protected String defaultValue = null;
/**
* The last value chosen by the user for this variable
*/
protected String lastValue = null;
/**
* The result returned from the prompt dialog
*/
protected String dialogResultString = null;
/**
* Presents the user with the appropriate prompt for the variable to be expanded
* and sets the <code>dialogResultString</code> based on the user's selection.
*/
public abstract void prompt();
/**
* Initializes values displayed when the user is prompted. If
* a prompt hint and default value are supplied in the given
* variable value, these are extracted for presentation
*
* @param varValue the value of the variable from which the prompt
* hint and default value will be extracted
*/
protected void setupDialog(String varValue) {
promptHint = null;
defaultValue = null;
dialogResultString = null;
if (varValue != null) {
int idx = varValue.indexOf(':');
if (idx != -1) {
promptHint = varValue.substring(0, idx);
defaultValue = varValue.substring(idx + 1);
} else {
promptHint = varValue;
}
}
if (promptHint != null) {
dialogMessage = Txt.s("Variable.Verilog.Promp.Hint1", new String[] {promptHint});
} else {
dialogMessage = Txt.s("Variable.Promp.Hint2");
}
} // setupDialog()
/* (non-Javadoc)
* @see org.eclipse.debug.internal.core.stringsubstitution.IContextVariableResolver#resolveValue(org.eclipse.debug.internal.core.stringsubstitution.IContextVariable, java.lang.String)
*/
public String resolveValue(IDynamicVariable variable, String argument) throws CoreException {
String value = null;
setupDialog(argument);
VerilogPlugin.getStandardDisplay().syncExec(new Runnable() {
public void run() {
prompt();
}
});
if (dialogResultString != null) {
value = dialogResultString;
lastValue = dialogResultString;
} else {
// dialogResultString == null means prompt was cancelled
throw new DebugException(new Status(IStatus.CANCEL, VDT.ID_VDT, IStatus.CANCEL, Txt.s("Variable.Promp.Cancel.Message", new String[] { variable.getName() }), null));
}
return value;
}
protected Shell getShell() {
Shell shell = VerilogPlugin.getStandardDisplay().getActiveShell();
if (shell == null) {
shell = VerilogPlugin.getActiveWorkbenchShell();
}
return shell;
} // getShell()
} // class PromptingResolver