/*
* Copyright 2013 serso aka se.solovyev
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Contact details
*
* Email: se.solovyev@gmail.com
* Site: http://se.solovyev.org
*/
package org.solovyev.android.wizard;
import java.util.List;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
public final class ListWizardFlow implements WizardFlow {
@Nonnull
private final List<? extends WizardStep> steps;
public ListWizardFlow(@Nonnull List<? extends WizardStep> steps) {
this.steps = steps;
}
@Nullable
@Override
public WizardStep getStepByName(@Nonnull final String name) {
for (WizardStep step : steps) {
if (step.getName().equals(name)) {
return step;
}
}
return null;
}
@Nullable
@Override
public WizardStep getNextStep(@Nonnull WizardStep step) {
final int i = steps.indexOf(step);
if (i >= 0 && i + 1 < steps.size()) {
return steps.get(i + 1);
} else {
return null;
}
}
@Nullable
@Override
public WizardStep getPrevStep(@Nonnull WizardStep step) {
final int i = steps.indexOf(step);
if (i >= 1) {
return steps.get(i - 1);
} else {
return null;
}
}
@Nonnull
@Override
public WizardStep getFirstStep() {
return steps.get(0);
}
@Nonnull
public WizardStep getStepAt(int position) {
return steps.get(position);
}
public int getPositionFor(@Nonnull WizardStep step) {
for (int i = 0; i < steps.size(); i++) {
if (steps.get(i).equals(step)) {
return i;
}
}
return -1;
}
public int getCount() {
return steps.size();
}
}