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Dynamic console-ui prompts, fixes #1051 (#1117)
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Co-authored-by: Guillaume Nodet <gnodet@gmail.com>
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@mattirn @gnodet
mattirn and gnodet authored Dec 10, 2024
1 parent 9739c62 commit 257314a
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Showing 9 changed files with 475 additions and 407 deletions.
2 changes: 1 addition & 1 deletion console-ui/jline-console-ui.bat
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,6 @@ popd

echo Launching ConsoleUI...
echo Classpath: %cp%
java -cp %cp% %opts% org.jline.consoleui.examples.Basic
java -cp %cp% %opts% org.jline.consoleui.examples.BasicDynamic

:END
2 changes: 1 addition & 1 deletion console-ui/jline-console-ui.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -80,5 +80,5 @@ echo "Classpath: $cp"
set mouse=a
java -cp $cp \
$opts \
org.jline.consoleui.examples.Basic
org.jline.consoleui.examples.BasicDynamic

153 changes: 102 additions & 51 deletions console-ui/src/main/java/org/jline/consoleui/prompt/ConsolePrompt.java
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Original file line number Diff line number Diff line change
Expand Up @@ -29,10 +29,12 @@
/**
* ConsolePrompt encapsulates the prompting of a list of input questions for the user.
*/
public class ConsolePrompt {
public class ConsolePrompt implements AutoCloseable {
protected final LineReader reader;
protected final Terminal terminal;
protected final UiConfig config;
private Attributes attributes;
private List<AttributedString> header = new ArrayList<>();

/**
*
Expand Down Expand Up @@ -66,6 +68,29 @@ public ConsolePrompt(LineReader reader, Terminal terminal, UiConfig config) {
}
config.setReaderOptions(options);
}
attributes = terminal.enterRawMode();
terminal.puts(InfoCmp.Capability.enter_ca_mode);
terminal.puts(InfoCmp.Capability.keypad_xmit);
terminal.writer().flush();
}

@Override
public void close() {
if (terminalInRawMode()) {
terminal.setAttributes(attributes);
terminal.puts(InfoCmp.Capability.exit_ca_mode);
terminal.puts(InfoCmp.Capability.keypad_local);
terminal.writer().flush();
for (AttributedString as : header) {
as.println(terminal);
}
terminal.writer().flush();
attributes = null;
}
}

private boolean terminalInRawMode() {
return attributes != null;
}

/**
Expand All @@ -79,6 +104,7 @@ public ConsolePrompt(LineReader reader, Terminal terminal, UiConfig config) {
* @throws IOException may be thrown by terminal
* @throws UserInterruptException if user interrupt handling is enabled and the user types the interrupt character (ctrl-C)
*/
@Deprecated
public Map<String, PromptResultItemIF> prompt(List<PromptableElementIF> promptableElementList)
throws IOException, UserInterruptException {
return prompt(new ArrayList<>(), promptableElementList);
Expand All @@ -96,53 +122,13 @@ public Map<String, PromptResultItemIF> prompt(List<PromptableElementIF> promptab
* @throws IOException may be thrown by terminal
* @throws UserInterruptException if user interrupt handling is enabled and the user types the interrupt character (ctrl-C)
*/
@Deprecated
public Map<String, PromptResultItemIF> prompt(
List<AttributedString> header, List<PromptableElementIF> promptableElementList)
throws IOException, UserInterruptException {
Attributes attributes = terminal.enterRawMode();
boolean cancelled = false;
try {
terminal.puts(InfoCmp.Capability.enter_ca_mode);
terminal.puts(InfoCmp.Capability.keypad_xmit);
terminal.writer().flush();

Map<String, PromptResultItemIF> resultMap = new HashMap<>();

for (int i = 0; i < promptableElementList.size(); i++) {
PromptableElementIF pe = promptableElementList.get(i);
PromptResultItemIF result = promptElement(header, pe);
if (result == null) {
// Prompt was cancelled by the user
if (i > 0) {
// Remove last result
header.remove(header.size() - 1);
// Go back to previous prompt
i -= 2;
continue;
} else {
if (config.cancellableFirstPrompt()) {
cancelled = true;
return null;
} else {
// Repeat current prompt
i -= 1;
continue;
}
}
}
String resp = result.getDisplayResult();
if (result instanceof ConfirmResult) {
ConfirmResult cr = (ConfirmResult) result;
if (cr.getConfirmed() == ConfirmChoice.ConfirmationValue.YES) {
resp = config.resourceBundle().getString("confirmation_yes_answer");
} else {
resp = config.resourceBundle().getString("confirmation_no_answer");
}
}
AttributedStringBuilder message = createMessage(pe.getMessage(), resp);
header.add(message.toAttributedString());
resultMap.put(pe.getName(), result);
}
prompt(header, promptableElementList, resultMap);
return resultMap;
} catch (IOError e) {
if (e.getCause() instanceof InterruptedIOException) {
Expand All @@ -151,16 +137,81 @@ public Map<String, PromptResultItemIF> prompt(
throw e;
}
} finally {
terminal.setAttributes(attributes);
terminal.puts(InfoCmp.Capability.exit_ca_mode);
terminal.puts(InfoCmp.Capability.keypad_local);
terminal.writer().flush();
if (!cancelled) {
for (AttributedString as : header) {
as.println(terminal);
close();
}
}

/**
* Prompt a list of choices (questions). This method takes a list of promptable elements, typically
* created with {@link PromptBuilder}. Each of the elements is processed and the user entries and
* answers are filled in to the result map. The result map contains the key of each promptable element
* and the user entry as an object implementing {@link PromptResultItemIF}.
*
* @param promptableElementList the list of questions / prompts to ask the user for.
* @param resultMap a map containing a result for each element of promptableElementList
* @throws IOException may be thrown by terminal
*/
public void prompt(List<PromptableElementIF> promptableElementList, Map<String, PromptResultItemIF> resultMap)
throws IOException {
prompt(new ArrayList<>(), promptableElementList, resultMap);
}

/**
* Prompt a list of choices (questions). This method takes a list of promptable elements, typically
* created with {@link PromptBuilder}. Each of the elements is processed and the user entries and
* answers are filled in to the result map. The result map contains the key of each promptable element
* and the user entry as an object implementing {@link PromptResultItemIF}.
*
* @param headerIn info to be displayed before first prompt.
* @param promptableElementList the list of questions / prompts to ask the user for.
* @param resultMap a map containing a result for each element of promptableElementList
* @throws IOException may be thrown by terminal
*/
public void prompt(
List<AttributedString> headerIn,
List<PromptableElementIF> promptableElementList,
Map<String, PromptResultItemIF> resultMap)
throws IOException {
if (!terminalInRawMode()) {
throw new IllegalStateException("Terminal is not in raw mode! Maybe ConsolePrompt is closed?");
}
this.header = headerIn;

for (int i = resultMap.isEmpty() ? 0 : resultMap.size() - 1; i < promptableElementList.size(); i++) {
PromptableElementIF pe = promptableElementList.get(i);
PromptResultItemIF result = promptElement(header, pe);
if (result == null) {
// Prompt was cancelled by the user
if (i > 0) {
// Remove last result
header.remove(header.size() - 1);
// Go back to previous prompt
i -= 2;
continue;
} else {
if (config.cancellableFirstPrompt()) {
header.remove(header.size() - 1);
resultMap.clear();
return;
} else {
// Repeat current prompt
i -= 1;
continue;
}
}
}
String resp = result.getDisplayResult();
if (result instanceof ConfirmResult) {
ConfirmResult cr = (ConfirmResult) result;
if (cr.getConfirmed() == ConfirmChoice.ConfirmationValue.YES) {
resp = config.resourceBundle().getString("confirmation_yes_answer");
} else {
resp = config.resourceBundle().getString("confirmation_no_answer");
}
terminal.writer().flush();
}
AttributedStringBuilder message = createMessage(pe.getMessage(), resp);
header.add(message.toAttributedString());
resultMap.put(pe.getName(), result);
}
}

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