//called by ChatMessageService when receiving a post from server
public void AddReceivedPostUI(PostItem item)
{
InvokeOnMainThread(() => {
ChatBubbleViewExtension postBubble = null;
//if posted by this account, then find pending post then undo transparency
if (string.Equals(item.UserId, Settings.UserId))
{
var bubbleArr = PendingPostBubbles.ToArray();
for (int c = 0; c < bubbleArr.Length; c++)
{
Console.WriteLine("Searching for matching post, iteration {0}", c);
if (IsSamePostItem(bubbleArr[c].PostData, item))
{
Console.WriteLine("Found possible matching post w same title and body, iteration {0} with body {1} and alpha {2}",
c, bubbleArr[c].PostData.Body, bubbleArr[c].Alpha);
if (IsPending(bubbleArr[c]))
{
Console.WriteLine("Found pending post, iteration {0} with body {1} and alpha {2}",
c, bubbleArr[c].PostData.Body, bubbleArr[c].Alpha);
bubbleArr[c].Alpha = 1.0f;
Console.WriteLine("Set alpha to {0}", bubbleArr[c].Alpha);
}
//else?
}
else
{
Console.WriteLine("iteration {0}, not a match", c);
}
}
}
else
{
postBubble = CreateChatBubble(item, PostStatusType.Received2ndPartyPostFromServer);
}
ChatScrollView.ContentSize = new CGSize(ChatScrollView.ContentSize.Width,
ChatBubbleY + TextField.Frame.Height + SmileyButton.Frame.Height + 100);
});
}
//called by client app when user composes message
public void AddLocalClientPostToUI(PostItem item, PostStatusType postStatus)
{
InvokeOnMainThread(() => {
Console.WriteLine("Adding post, ChatBubbleY is {0}", ChatBubbleY);
ChatBubbleViewExtension postBubble =
CreateChatBubble(item, postStatus);
if (postStatus == PostStatusType.SendingPost)
{
Console.WriteLine("Adding post w body {0} to pending list", item.Body);
PendingPosts.Add(item);
postBubble.Alpha = 0.5f;
postBubble.PostData = item;
PendingPostBubbles.Add(postBubble);
}
ChatScrollView.ContentSize = new CGSize(ChatScrollView.ContentSize.Width,
ChatBubbleY + TextField.Frame.Height + SmileyButton.Frame.Height + 100);
Console.WriteLine("Added post, ChatBubbleY is {0}", ChatBubbleY);
});
}
ChatBubbleViewExtension CreateChatBubble(PostItem post, PostStatusType postStatus)
{
bool IsLocal = false;
if (postStatus == PostStatusType.SendingPost || postStatus == PostStatusType.PreviousPost)
{
IsLocal = true;
}
Console.WriteLine("postStatus is {0}, IsLocal is {1}", postStatus.ToString(), IsLocal);
//base measurements
var verticalImageAdjustment = 5f;
var ChatAreaSpacing = 10f;
var ImageDimension = 22f;
nfloat labelSpacing = 5;
var ChatBubbleWidth = 200; //use DecideChatBubbleWidth(
var ChatBubbleHeight = 100; //heightDiff *1.5f;
//dependent measurements
ChatBubbleY += ChatBubbleHeight + ChatAreaSpacing;
labelWidth = ChatBubbleWidth - (ChatBubbleWidth - (labelSpacing * 2));
labelHeight = ChatBubbleHeight - (ChatBubbleHeight - (labelSpacing * 2));
var ImageAndBubbleFrame = new CGRect(0, ChatBubbleY, ChatScrollView.Frame.Width, ChatBubbleHeight);
var ImageX = IsLocal ? ImageAndBubbleFrame.Width - ChatAreaSpacing - ImageDimension : ChatAreaSpacing;
var ChatBubbleX = IsLocal ? ImageX - ChatBubbleWidth - ChatAreaSpacing : ImageDimension + (ChatAreaSpacing * 2);
//profile pic
var ProfileImageView = new UIImageView();
ProfileImageView.Image = UIImage.FromFile("profilepics/people.png");
ProfileImageView.ContentMode = UIViewContentMode.ScaleAspectFill;
ProfileImageView.Frame = new CGRect(ImageX,
verticalImageAdjustment,
ImageDimension,
ImageDimension);
//chat bubble without the profile pic
var ChatFrame = new CGRect(ChatBubbleX,
0,
ChatBubbleWidth,
ChatBubbleHeight);
var ChatMessage = new UIView();
ChatMessage.BackgroundColor = UIColor.White;
ChatMessage.Layer.CornerRadius = 12;
ChatMessage.Frame = ChatFrame;
//this is the username
var TitleLabel = new UILabel(new CGRect(labelSpacing, labelSpacing, labelWidth, labelHeight));
TitleLabel.TextColor = UIColor.LightGray;
TitleLabel.TextAlignment = UITextAlignment.Left;
TitleLabel.Font = UIFont.SystemFontOfSize(14);
TitleLabel.Text = post.Title;
TitleLabel.SizeToFit();
//message content
var BodyLabel = new UILabel(new CGRect(labelSpacing, TitleLabel.Frame.Height + (labelSpacing * 2), labelWidth, labelHeight));
BodyLabel.TextColor = UIColor.Black;
BodyLabel.Text = post.Body;
BodyLabel.Font = UIFont.SystemFontOfSize(15);
BodyLabel.SizeToFit();
BodyLabel.Lines = 50;
BodyLabel.LineBreakMode = UILineBreakMode.WordWrap;
//time message was sent
var TimeStampLabel = new UILabel(new CGRect(ChatBubbleWidth - (labelWidth * 4), ChatBubbleHeight - labelHeight - (labelSpacing * 2)
, labelWidth, labelHeight));
TimeStampLabel.TextAlignment = UITextAlignment.Left;
TimeStampLabel.Font = UIFont.SystemFontOfSize(12);
TimeStampLabel.Text = string.Format("{0}:{1}", DateTime.Now.TimeOfDay.Hours, DateTime.Now.TimeOfDay.Minutes);
TimeStampLabel.TextColor = UIColor.LightGray;
TimeStampLabel.SizeToFit();
//add message text into one bubble view
ChatMessage.AddSubview(TitleLabel);
ChatMessage.BringSubviewToFront(TitleLabel);
ChatMessage.AddSubview(BodyLabel);
ChatMessage.BringSubviewToFront(BodyLabel);
ChatMessage.AddSubview(TimeStampLabel);
ChatMessage.BringSubviewToFront(TimeStampLabel);
ChatMessage.SizeToFit();
//add image and text bubble together
//this is the chat bubble containing text and the profile pic
var ImageAndBubbleViewContainer = new ChatBubbleViewExtension();
ImageAndBubbleViewContainer.BackgroundColor = UIColor.Clear;
ImageAndBubbleViewContainer.Frame = ImageAndBubbleFrame;
ImageAndBubbleViewContainer.AddSubview(ProfileImageView);
ImageAndBubbleViewContainer.BringSubviewToFront(ProfileImageView);
ImageAndBubbleViewContainer.AddSubview(ChatMessage);
ImageAndBubbleViewContainer.BringSubviewToFront(ChatMessage);
//add image and text bubble to chat window
ChatScrollView.AddSubview(ImageAndBubbleViewContainer);
ChatScrollView.BringSubviewToFront(ImageAndBubbleViewContainer);
return(ImageAndBubbleViewContainer);
}
bool IsPending(ChatBubbleViewExtension postBubble)
{
return(postBubble.Alpha < 1.0f);
}