/// <summary> The start of the normal poem-view process
/// Shows the first line and some help text below it</summary>
/// <param name="poem"></param>
public void StartLoadPoem(Poem poem)
{
LoadTitleLine(poem);
if (poem.IsEmpty)
{
// Remove clickability from Title line
((StackLayout.Children[0]) as ExtendedLabel).tapAction = null;
// Set status
Status = PoemViewerStatus.CompletePoem;
}
else
{
// Load help lines
// Note that we don't increment DisplayedChunkIndex, because this isn't poem we're displaying, it's help text
ExtendedLabel nextLineTap_HelpLabel = GetFormattedLabel(ChunkType.HelpText);
nextLineTap_HelpLabel.Text = PoemViewerHelpText.NextLineTap_Help;
StackLayout.Children.Add(nextLineTap_HelpLabel);
nextLineTap_HelpLabel.tapAction = () => ShowNextChunk(poem, DisplayedChunkIndex, Status);
ExtendedLabel TitleTap_HelpLabel = GetFormattedLabel(ChunkType.HelpText);
TitleTap_HelpLabel.Text = PoemViewerHelpText.TitleTap_Help;
StackLayout.Children.Add(TitleTap_HelpLabel);
TitleTap_HelpLabel.tapAction = () => LoadWholePoem(poem);
ExtendedLabel PreviousLineTap_HelpLabel = GetFormattedLabel(ChunkType.HelpText);
PreviousLineTap_HelpLabel.Text = PoemViewerHelpText.PreviousLineTap_Help;
StackLayout.Children.Add(PreviousLineTap_HelpLabel);
// and define what we're doing
Status = PoemViewerStatus.LineOnePlushelp;
}
}
/// <summary> Return an Extended label with formatting dependent on chunkType</summary>
/// <param name="chunkType"></param>
/// <returns></returns>
private ExtendedLabel GetFormattedLabel(ChunkType chunkType)
{
ExtendedLabel label = new ExtendedLabel();
FormatLabel(label, chunkType);
return(label);
}
// Todo: Getting a log message: requestLayout() improperly called by ... NavigationPageRenderer
// https://stackoverflow.com/questions/24598977/android-requestlayout-improperly-called
// Specifically this answer: https://stackoverflow.com/questions/24598977/android-requestlayout-improperly-called/24756631#24756631
/// <summary> Add a complete poem into the viewer</summary>
/// <param name="poem"></param>
public void LoadWholePoem(Poem poem)
{
StackLayout.Children.Clear();
DisplayedChunkIndex = 0;
foreach (string chunk in poem.Chunks)
{
ChunkType chunkType = (DisplayedChunkIndex == 0) ? ChunkType.Title : ChunkType.NormalPoem;
ExtendedLabel label = GetChunkToExtendedLabel(poem, DisplayedChunkIndex, chunkType);
StackLayout.Children.Add(label);
DisplayedChunkIndex++;
}
}
private void LoadTitleLine(Poem poem)
{
// Todo: Have setting and optionally allow [ddd] to be hidden when poem is loaded
// This allows numbers for sorting without them being displayed
StackLayout.Children.Clear();
DisplayedChunkIndex = 0;
// Load the title line text
ExtendedLabel titleLabel = GetChunkToExtendedLabel(poem, DisplayedChunkIndex, ChunkType.Title);
// Enable clicking on it to load the whole poem
titleLabel.tapAction = () => LoadWholePoem(poem);
StackLayout.Children.Add(titleLabel);
DisplayedChunkIndex++;
}
private void FormatLabel(ExtendedLabel label, ChunkType chunkType)
{
switch (chunkType)
{
case ChunkType.Title:
label.FontAttributes = FontAttributes.Bold;
label.FontSize = defaultLabelFontSize * App.GoldenRatio;
break;
case ChunkType.HelpText:
label.FontAttributes = FontAttributes.Italic;
break;
case ChunkType.CurrentLine:
label.FontAttributes = FontAttributes.Bold;
break;
case ChunkType.NormalPoem:
default:
break;
}
}
/// <summary> Get the identified chunk and load it into a UI ExtendedLabel component </summary>
/// <param name="poem"></param>
/// <param name="chunkIndex"></param>
/// <param name="chunkType"></param>
/// <returns>The ExtendedLabel</returns>
private ExtendedLabel GetChunkToExtendedLabel(Poem poem, int chunkIndex, ChunkType chunkType)
{
ExtendedLabel label = null;
try
{
label = GetFormattedLabel(chunkType);
if (poem.Chunks.Count > chunkIndex)
{
label.Text = poem.Chunks[chunkIndex];
}
else
{
throw new IndexOutOfRangeException();
}
}
catch (Exception ex)
{
Log.Warn(logTag, string.Format("GetChunkToExtendedLabel() failed on chunkIndex={0} of {1} because {2}", chunkIndex, poem.Name, ex.Message));
}
return(label);
}
