// 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.
//
// Authors:
//
// Copyright (C) 2006 Jordi Mas i Hernandez <jordimash@gmail.com>
//
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Threading;
using System.Workflow.ComponentModel;
namespace System.Workflow.Activities{
public sealed class IfElseActivity : CompositeActivity
{
public IfElseActivity ()
{
}
public IfElseActivity (string name) : base (name)
{
}
// Methods
public IfElseBranchActivity AddBranch (ICollection <Activity> activities)
{
return AddBranch (activities, null);
}
public IfElseBranchActivity AddBranch (ICollection <Activity> activities, ActivityCondition branchCondition)
{
IfElseBranchActivity branch_activity = new IfElseBranchActivity ();
branch_activity.Condition = branchCondition;
foreach (Activity activity in activities) {
branch_activity.Activities.Add (activity);
}
return branch_activity;
}
//protected override ActivityExecutionStatus Cancel(ActivityExecutionContext executionContext)
protected override ActivityExecutionStatus Execute (ActivityExecutionContext executionContext)
{
bool condition_true = false;
foreach (IfElseBranchActivity activity in Activities) {
if (activity == null || activity.Condition == null)
continue;
if (activity.Condition.Evaluate (this, executionContext) == true) {
condition_true = true;
break;
}
}
if (Activities.Count > 1) {
if (condition_true == true) {
ActivitiesToExecute.Enqueue (Activities[0]);
} else {
ActivitiesToExecute.Enqueue (Activities[1]);
}
}
NeedsExecution = false;
return ActivityExecutionStatus.Closed;
}
}
}
|