/// <summary>
/// 选中数据移动方法
/// </summary>
protected async Task Transfer(List <SelectedItem> source, List <SelectedItem> target)
{
if (!IsDisabled)
{
var items = source.Where(i => i.Active).ToList();
source.RemoveAll(i => i.Active);
items.ForEach(i => i.Active = false);
target.AddRange(items);
// 回调
if (ItemsChanged.HasDelegate && Items != null)
{
var s = Items.ToList();
LeftItems.ToList().ForEach(i =>
{
var index = s.FindIndex(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
s[index].Active = false;
});
RightItems.ToList().ForEach(i =>
{
var index = s.FindIndex(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
s[index].Active = true;
});
await ItemsChanged.InvokeAsync(s);
}
}
}
/// <summary>
/// 选中数据移动方法
/// </summary>
private async Task TransferItems(List <SelectedItem> source, List <SelectedItem> target)
{
if (!IsDisabled && Items != null)
{
var items = source.Where(i => i.Active).ToList();
source.RemoveAll(i => items.Contains(i));
target.AddRange(items);
LeftItems.ForEach(i =>
{
var item = Items.FirstOrDefault(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
if (item != null)
{
item.Active = false;
}
});
RightItems.ForEach(i =>
{
var item = Items.FirstOrDefault(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
if (item != null)
{
item.Active = true;
}
});
Value = default;
CurrentValueAsString = string.Join(",", RightItems.Select(i => i.Value));
if (OnSelectedItemsChanged != null)
{
await OnSelectedItemsChanged.Invoke(RightItems);
}
}
}
/// <summary>
/// Fill Column list boxs.
/// </summary>
public void fill()
{
lstLeftColumn.Items.Clear();
lstRightColumn.Items.Clear();
// Fill left column
if (mLeftItems != null)
{
for (int i = LeftItems.GetLowerBound(0); i <= LeftItems.GetUpperBound(0); i++)
{
ListItem li = new ListItem(LeftItems[i, 1], LeftItems[i, 0]);
lstLeftColumn.Items.Add(li);
}
}
// Fill right column
if (mRightItems != null)
{
for (int i = RightItems.GetLowerBound(0); i <= RightItems.GetUpperBound(0); i++)
{
ListItem li = new ListItem(RightItems[i, 1], RightItems[i, 0]);
lstRightColumn.Items.Add(li);
}
}
}
/// <summary>
/// OnParametersSet 方法
/// </summary>
protected override void OnParametersSet()
{
base.OnParametersSet();
LeftPanelText ??= Localizer[nameof(LeftPanelText)];
RightPanelText ??= Localizer[nameof(RightPanelText)];
var list = CurrentValueAsString.Split(',', StringSplitOptions.RemoveEmptyEntries);
LeftItems.Clear();
RightItems.Clear();
Items ??= Enumerable.Empty <SelectedItem>();
// 左侧移除
LeftItems.AddRange(Items);
LeftItems.RemoveAll(i => list.Any(l => l == i.Value));
// 右侧插入
foreach (var t in list)
{
var item = Items.FirstOrDefault(i => i.Value == t);
if (item != null)
{
RightItems.Add(item);
}
}
}
private void MoveToLeft(ListItemViewModel item)
{
if (item != null)
{
RightItems.Remove(item);
LeftItems.Add(item);
}
}
/// <summary>
/// OnInitialized 方法
/// </summary>
protected override void OnInitialized()
{
base.OnInitialized();
if (Items != null)
{
LeftItems.AddRange(Items.Where(i => !i.Active));
RightItems.AddRange(Items.Where(i => i.Active));
}
}
private void ResetItems()
{
LeftItems.Clear();
RightItems.Clear();
if (Items != null)
{
LeftItems.AddRange(Items.Where(i => !i.Active));
}
if (Items != null)
{
RightItems.AddRange(Items.Where(i => i.Active));
}
}
protected override void OnInitialized(EventArgs e)
{
base.OnInitialized(e);
DataContext = this;
LeftItems.Add(new DataItem("Home", true, new HomePage()));
LeftItems.Add(new DataItem("Intro to ECE", true, new BaseInfo()));
LeftItems.Add(new DataItem("HOD's Welcome", true, new HODpage()));
LeftItems.Add(new DataItem("Course Advisors", true, new ECE_Advisors()));
LeftItems.Add(new DataItem("Contact Location", true, new ContactPage()));
// Felix: I use these titles in Courses, so I put them in a common place.
Course EeeCourse = new Course()
{
ProgramTitle = (string)Application.Current.FindResource("EEE_Courses_Title"),
};
EeeCourse.readJSON(new Uri("pack://application:,,,/Resources/eeeCourseInfo.json"));
Course CseCourse = new Course()
{
ProgramTitle = (string)Application.Current.FindResource("CSE_Courses_Title"),
};
CseCourse.readJSON(new Uri("pack://application:,,,/Resources/cseCourseInfo.json"));
Course SeCourse = new Course()
{
ProgramTitle = (string)Application.Current.FindResource("SE_Courses_Title"),
};
SeCourse.readJSON(new Uri("pack://application:,,,/Resources/seCourseInfo.json"));
// Needed the colours in the Courses page, so put them in a common file (Resources>Colours.xaml).
string cseColour = (string)Application.Current.FindResource("Colour_CSE_Str");
RightItems.Add(new DataItem("CSE Info", true, new CSEInfo(), cseColour));
RightItems.Add(new DataItem("CSE Courses", true, CseCourse, cseColour));
string eeeColour = (string)Application.Current.FindResource("Colour_EEE_Str");
RightItems.Add(new DataItem("EEE Info", true, new EEEInfo(), eeeColour));
RightItems.Add(new DataItem("EEE Courses", true, EeeCourse, eeeColour));
string seColour = (string)Application.Current.FindResource("Colour_SE_Str");
RightItems.Add(new DataItem("SE Info", true, new SEInfo(), seColour));
RightItems.Add(new DataItem("SE Courses", true, SeCourse, seColour));
}
/// <summary>
/// 选中数据移动方法
/// </summary>
private async Task TransferItems(List <SelectedItem> source, List <SelectedItem> target)
{
IsTransfer = true;
if (!IsDisabled && Items != null)
{
var items = source.Where(i => i.Active).ToList();
source.RemoveAll(i => items.Contains(i));
target.AddRange(items);
LeftItems.ForEach(i =>
{
var item = Items.FirstOrDefault(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
if (item != null)
{
item.Active = false;
}
});
RightItems.ForEach(i =>
{
var item = Items.FirstOrDefault(item => item.Value == i.Value && item.Text == i.Text && item.GroupName == i.GroupName);
if (item != null)
{
item.Active = true;
}
});
// 回调
if (ItemsChanged.HasDelegate)
{
await ItemsChanged.InvokeAsync(Items);
}
else
{
StateHasChanged();
}
}
}
private void MapAndCompareCollections(IMDTreeItem Left, IMDTreeItem Right, ComparisonItem node)
{
IEnumerable <IMDTreeItem> LeftItems;
IEnumerable <IMDTreeItem> RightItems;
if (m_CurrentMode == MatchingMode.ByID)
{
LeftItems = from item in Left.ChildItems orderby item.Key, item.Text select item;
RightItems = from item in Right.ChildItems orderby item.Key, item.Text select item;
}
else
{
LeftItems = from item in Left.ChildItems orderby item.Text, item.Text select item;
RightItems = from item in Right.ChildItems orderby item.Text, item.Text select item;
}
var LeftList = LeftItems.ToArray <IMDTreeItem>();
var RightList = RightItems.ToArray <IMDTreeItem>();
int leftIdx = 0;
int rightIdx = 0;
int leftCount = LeftList.Length - 1;
int rightCount = RightList.Length - 1;
bool Modified = false;
while (true)
{
if (leftIdx > leftCount)
{
rightIdx++;
if (rightIdx > rightCount)
{
break;
}
var Item = RightList[rightIdx];
AddAndFillNewNode(null, Item, node);
Modified = true;
continue;
}
if (rightIdx > rightCount)
{
leftIdx++;
if (leftIdx > leftCount)
{
break;
}
var Item = LeftList[leftIdx];
AddAndFillNewNode(Item, null, node);
Modified = true;
continue;
}
var LeftItem = LeftList[leftIdx];
var RightItem = RightList[rightIdx];
int?comparisonResult = CompareObjects(LeftItem, RightItem);
if (comparisonResult == 0)
{
var addedNode = AddAndFillNewNode(LeftItem, RightItem, node);
if (addedNode != null)
{
Modified = Modified || addedNode.IsDiffer;
}
leftIdx++;
rightIdx++;
}
else if (comparisonResult < 0)
{
AddAndFillNewNode(LeftItem, null, node);
Modified = true;
leftIdx++;
}
else if (comparisonResult > 0)
{
AddAndFillNewNode(null, RightItem, node);
Modified = true;
rightIdx++;
}
else
{
AddAndFillNewNode(LeftItem, null, node);
AddAndFillNewNode(null, RightItem, node);
leftIdx++;
rightIdx++;
Modified = true;
}
}
if (Modified)
{
node.IsDiffer = true;
}
}