public ScriptInputGroupPage(InputGroup inputGroup, List<InputGroup> previousInputGroups)
{
Title = "Input Group";
StackLayout contentLayout = new StackLayout
{
Orientation = StackOrientation.Vertical,
VerticalOptions = LayoutOptions.FillAndExpand
};
foreach (StackLayout stack in UiProperty.GetPropertyStacks(inputGroup))
contentLayout.Children.Add(stack);
Button editInputsButton = new Button
{
Text = "Edit Inputs",
FontSize = 20,
HorizontalOptions = LayoutOptions.FillAndExpand
};
editInputsButton.Clicked += async (o, e) =>
{
await Navigation.PushAsync(new ScriptInputsPage(inputGroup, previousInputGroups));
};
contentLayout.Children.Add(editInputsButton);
Content = new ScrollView
{
Content = contentLayout
};
}
public ScriptInputsPage(InputGroup inputGroup)
{
_inputGroup = inputGroup;
Title = "Inputs";
_inputsList = new ListView();
_inputsList.ItemTemplate = new DataTemplate(typeof(TextCell));
_inputsList.ItemTemplate.SetBinding(TextCell.TextProperty, new Binding(".", stringFormat: "{0}"));
_inputsList.ItemTapped += async (o, e) =>
{
if (_inputsList.SelectedItem == null)
return;
Input selectedInput = _inputsList.SelectedItem as Input;
int selectedIndex = inputGroup.Inputs.IndexOf(selectedInput);
List<string> actions = new string[] { "Edit", "Delete" }.ToList();
if (selectedIndex < inputGroup.Inputs.Count - 1)
actions.Insert(0, "Move Down");
if (selectedIndex > 0)
actions.Insert(0, "Move Up");
string selectedAction = await DisplayActionSheet(selectedInput.Name, "Cancel", null, actions.ToArray());
if (selectedAction == "Move Up")
inputGroup.Inputs.Move(selectedIndex, selectedIndex - 1);
else if (selectedAction == "Move Down")
inputGroup.Inputs.Move(selectedIndex, selectedIndex + 1);
else if (selectedAction == "Edit")
{
ScriptInputPage inputPage = new ScriptInputPage(selectedInput);
inputPage.Disappearing += (oo, ee) =>
{
Bind();
};
await Navigation.PushAsync(inputPage);
_inputsList.SelectedItem = null;
}
else if (selectedAction == "Delete")
{
if (await DisplayAlert("Delete " + selectedInput.Name + "?", "This action cannot be undone.", "Delete", "Cancel"))
{
_inputGroup.Inputs.Remove(selectedInput);
_inputsList.SelectedItem = null; // manually reset, since it isn't done automatically.
}
}
};
ToolbarItems.Add(new ToolbarItem(null, "plus.png", async () =>
{
List<Input> inputs = Assembly.GetExecutingAssembly()
.GetTypes()
.Where(t => !t.IsAbstract && t.IsSubclassOf(typeof(Input)))
.Select(t => Activator.CreateInstance(t))
.Cast<Input>()
.OrderBy(i => i.Name)
.ToList();
string cancelButtonName = "Cancel";
string selected = await DisplayActionSheet("Select Input Type", cancelButtonName, null, inputs.Select((input, index) => (index + 1) + ") " + input.Name).ToArray());
if (!string.IsNullOrWhiteSpace(selected) && selected != cancelButtonName)
{
Input input = inputs[int.Parse(selected.Substring(0, selected.IndexOf(")"))) - 1];
if (input is VoiceInput && inputGroup.Inputs.Count > 0 || !(input is VoiceInput) && inputGroup.Inputs.Any(i => i is VoiceInput))
UiBoundSensusServiceHelper.Get(true).FlashNotificationAsync("Voice inputs must reside in groups by themselves.");
else
{
inputGroup.Inputs.Add(input);
ScriptInputPage inputPage = new ScriptInputPage(input);
inputPage.Disappearing += (o, e) =>
{
Bind();
};
await Navigation.PushAsync(inputPage);
}
}
}));
Bind();
Content = _inputsList;
}
public PromptForInputsPage(InputGroup inputGroup, int stepNumber, int totalSteps, bool showCancelButton, string nextButtonTextOverride, CancellationToken? cancellationToken, string cancelConfirmation, string incompleteSubmissionConfirmation, string submitConfirmation, bool displayProgress, DateTimeOffset? firstPromptTimestamp, Action<Result> disappearanceCallback)
{
_displayedInputCount = 0;
StackLayout contentLayout = new StackLayout
{
Orientation = StackOrientation.Vertical,
VerticalOptions = LayoutOptions.FillAndExpand,
Padding = new Thickness(10, 20, 10, 20),
Children =
{
new Label
{
Text = inputGroup.Name,
FontSize = 20,
HorizontalOptions = LayoutOptions.CenterAndExpand
}
}
};
if (displayProgress)
{
float progress = (stepNumber - 1) / (float)totalSteps;
contentLayout.Children.Add(new Label
{
Text = "Progress: " + Math.Round(100 * progress) + "%",
FontSize = 15,
HorizontalOptions = LayoutOptions.CenterAndExpand
});
contentLayout.Children.Add(new ProgressBar
{
Progress = progress,
HorizontalOptions = LayoutOptions.FillAndExpand
});
}
if (firstPromptTimestamp.HasValue)
{
DateTime firstDisplayDateTime = firstPromptTimestamp.Value.ToLocalTime().DateTime;
string displayLapseDayDesc;
if (firstDisplayDateTime.Date == DateTime.Now.Date)
displayLapseDayDesc = "earlier today";
else if (firstDisplayDateTime.Date == DateTime.Now.AddDays(-1).Date)
displayLapseDayDesc = "yesterday";
else
displayLapseDayDesc = ((int)(DateTime.Now - firstDisplayDateTime).TotalDays) + " days ago (" + firstDisplayDateTime.ToShortDateString() + ")";
contentLayout.Children.Add(new Label
{
Text = "These fields were first displayed " + displayLapseDayDesc + " at " + firstDisplayDateTime.ToShortTimeString() + ".",
FontSize = 20,
HorizontalOptions = LayoutOptions.Start
});
}
if (inputGroup.Inputs.Any(input => input.Display && input.Required))
contentLayout.Children.Add(new Label
{
Text = "Required fields are indicated with *",
FontSize = 15,
TextColor = Color.Red,
HorizontalOptions = LayoutOptions.Start
});
List<Input> displayedInputs = new List<Input>();
int viewNumber = 1;
int inputSeparatorHeight = 10;
foreach (Input input in inputGroup.Inputs)
if (input.Display)
{
View inputView = input.GetView(viewNumber);
if (inputView != null)
{
if (input.Enabled && input.Frame)
{
inputView = new Frame
{
Content = inputView,
OutlineColor = Color.Accent,
VerticalOptions = LayoutOptions.Start,
HasShadow = true,
Padding = new Thickness(10)
};
}
// add some vertical separation between inputs
if (_displayedInputCount > 0)
contentLayout.Children.Add(new BoxView { Color = Color.Transparent, HeightRequest = inputSeparatorHeight });
contentLayout.Children.Add(inputView);
displayedInputs.Add(input);
if (input.DisplayNumber)
++viewNumber;
++_displayedInputCount;
}
}
if (_displayedInputCount > 0)
contentLayout.Children.Add(new BoxView { Color = Color.Transparent, HeightRequest = inputSeparatorHeight });
#region previous/next buttons
StackLayout previousNextStack = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.FillAndExpand
};
#region previous button
bool previousButtonTapped = false;
if (stepNumber > 1)
{
Button previousButton = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20,
Text = "Previous"
};
previousButton.Clicked += async (o, e) =>
{
previousButtonTapped = true;
await Navigation.PopModalAsync(false);
};
previousNextStack.Children.Add(previousButton);
}
#endregion
#region next button
Button nextButton = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20,
Text = stepNumber < totalSteps ? "Next" : "Submit"
#if UNIT_TESTING
// set style id so that we can retrieve the button when unit testing
, StyleId = "NextButton"
#endif
};
if (nextButtonTextOverride != null)
nextButton.Text = nextButtonTextOverride;
bool nextButtonTapped = false;
nextButton.Clicked += async (o, e) =>
{
string confirmationMessage = "";
if (!string.IsNullOrWhiteSpace(incompleteSubmissionConfirmation) && !inputGroup.Valid)
confirmationMessage += incompleteSubmissionConfirmation;
else if (nextButton.Text == "Submit" && !string.IsNullOrWhiteSpace(submitConfirmation))
confirmationMessage += submitConfirmation;
if (string.IsNullOrWhiteSpace(confirmationMessage) || await DisplayAlert("Confirm", confirmationMessage, "Yes", "No"))
{
// if the cancellation token was cancelled while the dialog was up, then we should ignore the dialog. the token
// will have already popped this page off the navigation stack.
if (!cancellationToken.GetValueOrDefault().IsCancellationRequested)
{
nextButtonTapped = true;
await Navigation.PopModalAsync(stepNumber == totalSteps);
}
}
};
previousNextStack.Children.Add(nextButton);
#endregion
#endregion
StackLayout navigationStack = new StackLayout
{
Orientation = StackOrientation.Vertical,
HorizontalOptions = LayoutOptions.FillAndExpand,
Children = { previousNextStack }
};
#region cancel button
bool cancelButtonTapped = false;
if (showCancelButton)
{
Button cancelButton = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20,
Text = "Cancel"
};
navigationStack.Children.Add(new BoxView { Color = Color.Gray, HorizontalOptions = LayoutOptions.FillAndExpand, HeightRequest = 0.5 });
navigationStack.Children.Add(cancelButton);
cancelButton.Clicked += async (o, e) =>
{
string confirmationMessage = "";
if (!string.IsNullOrWhiteSpace(cancelConfirmation))
confirmationMessage += cancelConfirmation;
if (string.IsNullOrWhiteSpace(confirmationMessage) || await DisplayAlert("Confirm", confirmationMessage, "Yes", "No"))
{
// if the cancellation token was cancelled while the dialog was up, then we should ignore the dialog. the token
// will have already popped this page off the navigation stack (see below).
if (!cancellationToken.GetValueOrDefault().IsCancellationRequested)
{
cancelButtonTapped = true;
await Navigation.PopModalAsync(true);
}
}
};
}
#endregion
contentLayout.Children.Add(navigationStack);
#region cancellation token
bool cancellationTokenCanceled = false;
if (cancellationToken != null)
{
// if the cancellation token is cancelled, pop this page off the stack.
cancellationToken.GetValueOrDefault().Register(() =>
{
SensusServiceHelper.Get().Logger.Log("Cancellation token was cancelled. Will pop pages.", LoggingLevel.Normal, GetType());
cancellationTokenCanceled = true;
Device.BeginInvokeOnMainThread(async() =>
{
SensusServiceHelper.Get().Logger.Log("On UI thread. Ready to pop page.", LoggingLevel.Normal, GetType());
if (Navigation.ModalStack.Count > 0 && Navigation.ModalStack.Last() == this)
{
await Navigation.PopModalAsync(true);
SensusServiceHelper.Get().Logger.Log("Popped page.", LoggingLevel.Normal, GetType());
}
else
SensusServiceHelper.Get().Logger.Log("No page to pop.", LoggingLevel.Normal, GetType());
});
});
}
#endregion
Appearing += (o, e) =>
{
foreach (Input input in displayedInputs)
input.Viewed = true;
};
Disappearing += (o, e) =>
{
if (previousButtonTapped)
disappearanceCallback(Result.NavigateBackward);
else if (cancelButtonTapped || cancellationTokenCanceled)
disappearanceCallback(Result.Cancel);
else if (nextButtonTapped)
disappearanceCallback(Result.NavigateForward);
else
disappearanceCallback(Result.Cancel); // the user navigated back, or another activity started and covered the window
};
Content = new ScrollView
{
Content = contentLayout
};
}
public void PromptForInputsAsync(string windowTitle, IEnumerable<Input> inputs, CancellationToken? cancellationToken, bool showCancelButton, string nextButtonText, string cancelConfirmation, string incompleteSubmissionConfirmation, string submitConfirmation, bool displayProgress, Action<List<Input>> callback)
{
InputGroup inputGroup = new InputGroup(windowTitle);
foreach (Input input in inputs)
inputGroup.Inputs.Add(input);
PromptForInputsAsync(false, DateTimeOffset.MinValue, new InputGroup[] { inputGroup }, cancellationToken, showCancelButton, nextButtonText, cancelConfirmation, incompleteSubmissionConfirmation, submitConfirmation, displayProgress, null, inputGroups =>
{
if (inputGroups == null)
callback(null);
else
callback(inputGroups.SelectMany(g => g.Inputs).ToList());
});
}
public ScriptInputsPage(InputGroup inputGroup, List<InputGroup> previousInputGroups)
{
_inputGroup = inputGroup;
Title = "Inputs";
_inputsList = new ListView();
_inputsList.ItemTemplate = new DataTemplate(typeof(TextCell));
_inputsList.ItemTemplate.SetBinding(TextCell.TextProperty, new Binding(".", stringFormat: "{0}"));
_inputsList.ItemTapped += async (o, e) =>
{
if (_inputsList.SelectedItem == null)
return;
Input selectedInput = _inputsList.SelectedItem as Input;
int selectedIndex = inputGroup.Inputs.IndexOf(selectedInput);
List<string> actions = new List<string>();
if (selectedIndex > 0)
actions.Add("Move Up");
if (selectedIndex < inputGroup.Inputs.Count - 1)
actions.Add("Move Down");
actions.Add("Edit");
if (previousInputGroups != null && previousInputGroups.Select(previousInputGroup => previousInputGroup.Inputs.Count).Sum() > 0)
actions.Add("Add Display Condition");
if (selectedInput.DisplayConditions.Count > 0)
actions.AddRange(new string[]{ "View Display Conditions" });
actions.Add("Delete");
string selectedAction = await DisplayActionSheet(selectedInput.Name, "Cancel", null, actions.ToArray());
if (selectedAction == "Move Up")
inputGroup.Inputs.Move(selectedIndex, selectedIndex - 1);
else if (selectedAction == "Move Down")
inputGroup.Inputs.Move(selectedIndex, selectedIndex + 1);
else if (selectedAction == "Edit")
{
ScriptInputPage inputPage = new ScriptInputPage(selectedInput);
inputPage.Disappearing += (oo, ee) =>
{
Bind();
};
await Navigation.PushAsync(inputPage);
_inputsList.SelectedItem = null;
}
else if (selectedAction == "Add Display Condition")
{
string abortMessage = "Condition is not complete. Abort?";
SensusServiceHelper.Get().PromptForInputsAsync("Display Condition", new Input[]
{
new ItemPickerPageInput("Input:", previousInputGroups.SelectMany(previousInputGroup => previousInputGroup.Inputs.Cast<object>()).ToList()),
new ItemPickerPageInput("Condition:", Enum.GetValues(typeof(InputValueCondition)).Cast<object>().ToList()),
new ItemPickerPageInput("Conjunctive/Disjunctive:", new object[] { "Conjunctive", "Disjunctive" }.ToList())
},
null,
true,
null,
null,
abortMessage,
null,
false,
inputs =>
{
if (inputs == null)
return;
if (inputs.All(input => input.Valid))
{
Input conditionInput = ((inputs[0] as ItemPickerPageInput).Value as IEnumerable<object>).First() as Input;
InputValueCondition condition = (InputValueCondition)((inputs[1] as ItemPickerPageInput).Value as IEnumerable<object>).First();
bool conjunctive = ((inputs[2] as ItemPickerPageInput).Value as IEnumerable<object>).First().Equals("Conjunctive");
if (condition == InputValueCondition.IsComplete)
selectedInput.DisplayConditions.Add(new InputDisplayCondition(conditionInput, condition, null, conjunctive));
else
{
Regex uppercaseSplitter = new Regex(@"
(?<=[A-Z])(?=[A-Z][a-z]) |
(?<=[^A-Z])(?=[A-Z]) |
(?<=[A-Za-z])(?=[^A-Za-z])", RegexOptions.IgnorePatternWhitespace);
// show the user a required copy of the condition input and prompt for the condition value
Input conditionInputCopy = conditionInput.Copy();
conditionInputCopy.DisplayConditions.Clear();
conditionInputCopy.LabelText = "Value that " + conditionInputCopy.Name + " " + uppercaseSplitter.Replace(condition.ToString(), " ").ToLower() + ":";
conditionInputCopy.Required = true;
SensusServiceHelper.Get().PromptForInputAsync("Display Condition",
conditionInputCopy,
null,
true,
"OK",
null,
abortMessage,
null,
false,
input =>
{
if (input == null)
return;
if (input.Valid)
selectedInput.DisplayConditions.Add(new InputDisplayCondition(conditionInput, condition, input.Value, conjunctive));
});
}
}
});
}
else if (selectedAction == "View Display Conditions")
{
await Navigation.PushAsync(new ViewTextLinesPage("Display Conditions", selectedInput.DisplayConditions.Select(displayCondition => displayCondition.ToString()).ToList(), null, async () =>
{
selectedInput.DisplayConditions.Clear();
}));
}
else if (selectedAction == "Delete")
{
if (await DisplayAlert("Delete " + selectedInput.Name + "?", "This action cannot be undone.", "Delete", "Cancel"))
{
_inputGroup.Inputs.Remove(selectedInput);
_inputsList.SelectedItem = null; // manually reset, since it isn't done automatically.
}
}
};
ToolbarItems.Add(new ToolbarItem(null, "plus.png", async () =>
{
List<Input> inputs = Assembly.GetExecutingAssembly()
.GetTypes()
.Where(t => !t.IsAbstract && t.IsSubclassOf(typeof(Input)))
.Select(t => Activator.CreateInstance(t))
.Cast<Input>()
.OrderBy(i => i.Name)
.ToList();
string cancelButtonName = "Cancel";
string selected = await DisplayActionSheet("Select Input Type", cancelButtonName, null, inputs.Select((input, index) => (index + 1) + ") " + input.Name).ToArray());
if (!string.IsNullOrWhiteSpace(selected) && selected != cancelButtonName)
{
Input input = inputs[int.Parse(selected.Substring(0, selected.IndexOf(")"))) - 1];
if (input is VoiceInput && inputGroup.Inputs.Count > 0 || !(input is VoiceInput) && inputGroup.Inputs.Any(i => i is VoiceInput))
SensusServiceHelper.Get().FlashNotificationAsync("Voice inputs must reside in groups by themselves.");
else
{
inputGroup.Inputs.Add(input);
ScriptInputPage inputPage = new ScriptInputPage(input);
inputPage.Disappearing += (o, e) =>
{
Bind();
};
await Navigation.PushAsync(inputPage);
}
}
}));
Bind();
Content = _inputsList;
}
public PromptForInputsPage(InputGroup inputGroup, int stepNumber, int totalSteps, bool showCancelButton, string nextButtonTextOverride, CancellationToken? cancellationToken, string cancelConfirmation, string incompleteSubmissionConfirmation, string submitConfirmation, bool displayProgress, Action<Result> callback)
{
_displayedInputCount = 0;
StackLayout contentLayout = new StackLayout
{
Orientation = StackOrientation.Vertical,
VerticalOptions = LayoutOptions.FillAndExpand,
Padding = new Thickness(0, 20, 0, 0),
Children =
{
new Label
{
Text = inputGroup.Name,
FontSize = 20,
HorizontalOptions = LayoutOptions.CenterAndExpand
}
}
};
if (displayProgress)
{
float progress = (stepNumber - 1) / (float)totalSteps;
contentLayout.Children.Add(new Label
{
Text = "Progress: " + Math.Round(100 * progress) + "%",
FontSize = 15,
HorizontalOptions = LayoutOptions.CenterAndExpand
});
contentLayout.Children.Add(new ProgressBar
{
Progress = progress,
HorizontalOptions = LayoutOptions.FillAndExpand
});
}
int inputSeparatorHeight = 10;
int viewNumber = 1;
bool anyRequired = false;
List<Input> displayedInputs = new List<Input>();
foreach (Input input in inputGroup.Inputs)
if (input.Display)
{
View inputView = input.GetView(viewNumber);
if (inputView != null)
{
if (input.Enabled && input.Frame)
{
inputView = new Frame
{
Content = inputView,
OutlineColor = Color.Accent,
VerticalOptions = LayoutOptions.Start,
HasShadow = true,
Padding = new Thickness(10)
};
}
if (_displayedInputCount > 0)
contentLayout.Children.Add(new BoxView { Color = Color.Transparent, HeightRequest = inputSeparatorHeight });
contentLayout.Children.Add(inputView);
displayedInputs.Add(input);
if (input.DisplayNumber)
++viewNumber;
if (input.Required)
anyRequired = true;
++_displayedInputCount;
}
}
if (_displayedInputCount > 0)
contentLayout.Children.Add(new BoxView { Color = Color.Transparent, HeightRequest = inputSeparatorHeight });
if (anyRequired)
contentLayout.Children.Add(new Label
{
Text = "* Required Field",
FontSize = 15,
TextColor = Color.Red,
HorizontalOptions = LayoutOptions.FillAndExpand
});
StackLayout navigationStack = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.FillAndExpand
};
#region previous button
bool previousButtonTapped = false;
// step numbers are 1-based -- if we're beyond the first, provide a previous button
if (stepNumber > 1)
{
Button previousButton = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20,
Text = "Previous"
};
navigationStack.Children.Add(previousButton);
previousButton.Clicked += async (o, e) =>
{
previousButtonTapped = true;
await Navigation.PopModalAsync(false);
};
}
#endregion
#region cancel button
bool cancelButtonTapped = false;
if (showCancelButton)
{
Button cancelButton = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20,
Text = "Cancel"
};
navigationStack.Children.Add(cancelButton);
cancelButton.Clicked += async (o, e) =>
{
string confirmationMessage = "";
if (!string.IsNullOrWhiteSpace(cancelConfirmation))
confirmationMessage += cancelConfirmation;
if (string.IsNullOrWhiteSpace(confirmationMessage) || await DisplayAlert("Confirm", confirmationMessage, "Yes", "No"))
{
// if the cancellation token was cancelled while the dialog was up, then we should ignore the dialog. the token
// will have already popped this page off the navigation stack.
if (!cancellationToken.GetValueOrDefault().IsCancellationRequested)
{
cancelButtonTapped = true;
await Navigation.PopModalAsync(true);
}
}
};
}
#endregion
#region next button
Button nextButton = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20,
Text = stepNumber < totalSteps ? "Next" : "Submit"
#if UNIT_TESTING
// set style id so that we can retrieve the button when unit testing
, StyleId = "NextButton"
#endif
};
if (nextButtonTextOverride != null)
nextButton.Text = nextButtonTextOverride;
navigationStack.Children.Add(nextButton);
bool nextButtonTapped = false;
nextButton.Clicked += async (o, e) =>
{
string confirmationMessage = "";
if (!string.IsNullOrWhiteSpace(incompleteSubmissionConfirmation) && !inputGroup.Valid)
confirmationMessage += incompleteSubmissionConfirmation;
else if (nextButton.Text == "Submit" && !string.IsNullOrWhiteSpace(submitConfirmation))
confirmationMessage += submitConfirmation;
if (string.IsNullOrWhiteSpace(confirmationMessage) || await DisplayAlert("Confirm", confirmationMessage, "Yes", "No"))
{
// if the cancellation token was cancelled while the dialog was up, then we should ignore the dialog. the token
// will have already popped this page off the navigation stack.
if (!cancellationToken.GetValueOrDefault().IsCancellationRequested)
{
nextButtonTapped = true;
await Navigation.PopModalAsync(stepNumber == totalSteps);
}
}
};
#endregion
contentLayout.Children.Add(navigationStack);
#region cancellation token
bool cancellationTokenCanceled = false;
if (cancellationToken != null)
{
// if the cancellation token is cancelled, pop this page off the stack.
cancellationToken.GetValueOrDefault().Register(() =>
{
cancellationTokenCanceled = true;
Device.BeginInvokeOnMainThread(async() =>
{
if (Navigation.ModalStack.Count > 0 && Navigation.ModalStack.Last() == this)
await Navigation.PopModalAsync(true);
});
});
}
#endregion
Appearing += (o, e) =>
{
foreach (Input input in displayedInputs)
input.Viewed = true;
};
Disappearing += (o, e) =>
{
if (previousButtonTapped)
callback(Result.NavigateBackward);
else if (cancelButtonTapped || cancellationTokenCanceled)
callback(Result.Cancel);
else if (nextButtonTapped)
callback(Result.NavigateForward);
else
callback(Result.Cancel); // the user navigated back, or another activity started
};
Content = new ScrollView
{
Content = contentLayout
};
}
public PromptForInputsPage(InputGroup inputGroup, int stepNumber, int totalSteps, Action<Result> callback)
{
Title = inputGroup.Name;
StackLayout contentLayout = new StackLayout
{
Orientation = StackOrientation.Vertical,
VerticalOptions = LayoutOptions.FillAndExpand,
Padding = new Thickness(0, 20, 0, 0)
};
contentLayout.Children.Add(new Label
{
Text = "Step " + stepNumber + " of " + totalSteps,
FontSize = 15,
HorizontalOptions = LayoutOptions.CenterAndExpand
});
contentLayout.Children.Add(new ProgressBar
{
Progress = stepNumber / (double)totalSteps,
HorizontalOptions = LayoutOptions.FillAndExpand
});
foreach (Input input in inputGroup.Inputs)
if (input.View != null)
contentLayout.Children.Add(input.View);
StackLayout navigationStack = new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.FillAndExpand
};
bool previousButtonTapped = false;
// step numbers are 1-based -- if we're beyond the first, provide a previous button
if (stepNumber > 1)
{
Button previousButton = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20,
Text = "Previous"
};
navigationStack.Children.Add(previousButton);
previousButton.Clicked += async (o, e) =>
{
previousButtonTapped = true;
await Navigation.PopModalAsync(false);
};
}
Button cancelButton = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20,
Text = "Cancel"
};
navigationStack.Children.Add(cancelButton);
bool cancelButtonTapped = false;
cancelButton.Clicked += async (o, e) =>
{
cancelButtonTapped = true;
await Navigation.PopModalAsync(true);
};
Button nextButton = new Button
{
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 20,
Text = stepNumber < totalSteps ? "Next" : "Submit"
};
navigationStack.Children.Add(nextButton);
bool nextButtonTapped = false;
nextButton.Clicked += async (o, e) =>
{
nextButtonTapped = true;
await Navigation.PopModalAsync(stepNumber == totalSteps);
};
contentLayout.Children.Add(navigationStack);
Disappearing += (o, e) =>
{
if (previousButtonTapped)
callback(Result.NavigateBackward);
else if (cancelButtonTapped)
callback(Result.Cancel);
else if (nextButtonTapped)
callback(Result.NavigateForward);
else
callback(Result.Cancel); // the user navigated back, or another activity started
};
Content = new ScrollView
{
Content = contentLayout
};
}