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Some minor tweaks to InputDecoration (mainly docs). (#24643)

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This commit is contained in:
Ian Hickson
2018-12-23 10:12:42 -08:00
committed by GitHub
parent 2e2f19d3e9
commit c0b20a76de
1 changed files with 106 additions and 54 deletions
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160
packages/flutter/lib/src/material/input_decorator.dart
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@@ -1516,7 +1516,7 @@ class InputDecorator extends StatefulWidget {
_InputDecoratorState createState() => _InputDecoratorState();
/// The RenderBox that defines this decorator's "container". That's the
/// area which is filled if [InputDecoration.isFilled] is true. It's the area
/// area which is filled if [InputDecoration.filled] is true. It's the area
/// adjacent to [InputDecoration.icon] and above the widgets that contain
/// [InputDecoration.helperText], [InputDecoration.errorText], and
/// [InputDecoration.counterText].
@@ -1956,8 +1956,9 @@ class InputDecoration {
///
/// The [enabled] argument must not be null.
///
/// Only [prefix] or [prefixText] can be specified.
/// The same applies for [suffix] and [suffixText].
/// Only one of [prefix] and [prefixText] can be specified.
///
/// Similarly, only one of [suffix] and [suffixText] can be specified.
const InputDecoration({
this.icon,
this.labelText,
@@ -1995,8 +1996,8 @@ class InputDecoration {
this.semanticCounterText,
this.alignLabelWithHint,
}) : assert(enabled != null),
assert(!(prefix != null && prefixText != null), 'Declaring both prefix and prefixText is not allowed'),
assert(!(suffix != null && suffixText != null), 'Declaring both suffix and suffixText is not allowed'),
assert(!(prefix != null && prefixText != null), 'Declaring both prefix and prefixText is not supported.'),
assert(!(suffix != null && suffixText != null), 'Declaring both suffix and suffixText is not supported.'),
isCollapsed = false;
/// Defines an [InputDecorator] that is the same size as the input field.
@@ -2052,7 +2053,7 @@ class InputDecoration {
///
/// The trailing edge of the icon is padded by 16dps.
///
/// The decoration's container is the area which is filled if [isFilled] is
/// The decoration's container is the area which is filled if [filled] is
/// true and bordered per the [border]. It's the area adjacent to
/// [decoration.icon] and above the widgets that contain [helperText],
/// [errorText], and [counterText].
@@ -2159,7 +2160,7 @@ class InputDecoration {
/// The padding for the input decoration's container.
///
/// The decoration's container is the area which is filled if [isFilled] is
/// The decoration's container is the area which is filled if [filled] is
/// true and bordered per the [border]. It's the area adjacent to
/// [decoration.icon] and above the widgets that contain [helperText],
/// [errorText], and [counterText].
@@ -2176,8 +2177,8 @@ class InputDecoration {
/// To create a collapsed input decoration, use [InputDecoration..collapsed].
final bool isCollapsed;
/// An icon that that appears before the [prefixText] and the input and within
/// the decoration's container.
/// An icon that that appears before the [prefix] or [prefixText] and before
/// the editable part of the text field, within the decoration's container.
///
/// The size and color of the prefix icon is configured automatically using an
/// [IconTheme] and therefore does not need to be explicitly given in the
@@ -2187,44 +2188,71 @@ class InputDecoration {
/// can be expanded beyond that. Anything larger than 24px will require
/// additional padding to ensure it matches the material spec of 12px padding
/// between the left edge of the input and leading edge of the prefix icon.
/// To pad the leading edge of the prefix icon:
/// The following snippet shows how to pad the leading edge of the prefix
/// icon:
///
/// ```dart
/// prefixIcon: Padding(
/// padding: const EdgeInsetsDirectional.only(start: 12.0),
/// child: myIcon, // icon is 48px widget.
/// child: myIcon, // myIcon is a 48px-wide widget.
/// )
/// ```
///
/// The decoration's container is the area which is filled if [isFilled] is
/// The decoration's container is the area which is filled if [filled] is
/// true and bordered per the [border]. It's the area adjacent to
/// [decoration.icon] and above the widgets that contain [helperText],
/// [errorText], and [counterText].
///
/// See [Icon], [ImageIcon].
/// See also:
///
/// * [Icon] and [ImageIcon], which are typically used to show icons.
/// * [prefix] and [prefixText], which are other ways to show content
/// before the text field (but after the icon).
/// * [suffixIcon], which is the same but on the trailing edge.
final Widget prefixIcon;
/// Optional widget to place on the line before the input.
/// Can be used to add some padding to the [prefixText] or to
/// add a custom widget in front of the input. The widget's baseline
/// is lined up with the input baseline.
///
/// This can be used, for example, to add some padding to text that would
/// otherwise be specified using [prefixText], or to add a custom widget in
/// front of the input. The widget's baseline is lined up with the input
/// baseline.
///
/// Only one of [prefix] and [prefixText] can be specified.
///
/// The [prefix] appears after the [prefixIcon], if both are specified.
///
/// See also:
///
/// * [suffix], the equivalent but on the trailing edge.
final Widget prefix;
/// Optional text prefix to place on the line before the input.
///
/// Uses the [prefixStyle]. Uses [hintStyle] if [prefixStyle] isn't
/// specified. Prefix is not returned as part of the input.
/// Uses the [prefixStyle]. Uses [hintStyle] if [prefixStyle] isn't specified.
/// The prefix text is not returned as part of the user's input.
///
/// If a more elaborate prefix is required, consider using [prefix] instead.
/// Only one of [prefix] and [prefixText] can be specified.
///
/// The [prefixText] appears after the [prefixIcon], if both are specified.
///
/// See also:
///
/// * [suffixText], the equivalent but on the trailing edge.
final String prefixText;
/// The style to use for the [prefixText].
///
/// If null, defaults to the [hintStyle].
///
/// See also:
///
/// * [suffixStyle], the equivalent but on the trailing edge.
final TextStyle prefixStyle;
/// An icon that that appears after the input and [suffixText] and within
/// the decoration's container.
/// An icon that that appears after the editable part of the text field and
/// after the [suffix] or [suffixText], within the decoration's container.
///
/// The size and color of the suffix icon is configured automatically using an
/// [IconTheme] and therefore does not need to be explicitly given in the
@@ -2234,40 +2262,66 @@ class InputDecoration {
/// can be expanded beyond that. Anything larger than 24px will require
/// additional padding to ensure it matches the material spec of 12px padding
/// between the right edge of the input and trailing edge of the prefix icon.
/// To pad the trailing edge of the suffix icon:
/// The following snipped shows how to pad the trailing edge of the suffix
/// icon:
///
/// ```dart
/// suffixIcon: Padding(
/// padding: const EdgeInsetsDirectional.only(end: 12.0),
/// child: myIcon, // icon is 48px widget.
/// child: myIcon, // myIcon is a 48px-wide widget.
/// )
/// ```
///
/// The decoration's container is the area which is filled if [isFilled] is
/// The decoration's container is the area which is filled if [filled] is
/// true and bordered per the [border]. It's the area adjacent to
/// [decoration.icon] and above the widgets that contain [helperText],
/// [errorText], and [counterText].
///
/// See [Icon], [ImageIcon].
/// See also:
///
/// * [Icon] and [ImageIcon], which are typically used to show icons.
/// * [suffix] and [suffixText], which are other ways to show content
/// after the text field (but before the icon).
/// * [prefixIcon], which is the same but on the leading edge.
final Widget suffixIcon;
/// Optional widget to place on the line after the input.
/// Can be used to add some padding to the [suffixText] or to
/// add a custom widget after the input. The widget's baseline
/// is lined up with the input baseline.
///
/// This can be used, for example, to add some padding to the text that would
/// otherwise be specified using [suffixText], or to add a custom widget after
/// the input. The widget's baseline is lined up with the input baseline.
///
/// Only one of [suffix] and [suffixText] can be specified.
///
/// The [suffix] appears before the [suffixIcon], if both are specified.
///
/// See also:
///
/// * [prefix], the equivalent but on the leading edge.
final Widget suffix;
/// Optional text suffix to place on the line after the input.
///
/// Uses the [suffixStyle]. Uses [hintStyle] if [suffixStyle] isn't
/// specified. Suffix is not returned as part of the input.
/// Uses the [suffixStyle]. Uses [hintStyle] if [suffixStyle] isn't specified.
/// The suffix text is not returned as part of the user's input.
///
/// If a more elaborate suffix is required, consider using [suffix] instead.
/// Only one of [suffix] and [suffixText] can be specified.
///
/// The [suffixText] appears before the [suffixIcon], if both are specified.
///
/// See also:
///
/// * [prefixText], the equivalent but on the leading edge.
final String suffixText;
/// The style to use for the [suffixText].
///
/// If null, defaults to the [hintStyle].
///
/// See also:
///
/// * [prefixStyle], the equivalent but on the leading edge.
final TextStyle suffixStyle;
/// Optional text to place below the line as a character count.
@@ -2285,10 +2339,10 @@ class InputDecoration {
/// If true the decoration's container is filled with [fillColor].
///
/// Typically this field set to true if [border] is
/// [const UnderlineInputBorder()].
/// Typically this field set to true if [border] is an
/// [UnderlineInputBorder].
///
/// The decoration's container is the area which is filled if [isFilled] is
/// The decoration's container is the area which is filled if [filled] is
/// true and bordered per the [border]. It's the area adjacent to
/// [decoration.icon] and above the widgets that contain [helperText],
/// [errorText], and [counterText].
@@ -2300,7 +2354,7 @@ class InputDecoration {
///
/// By default the fillColor is based on the current [Theme].
///
/// The decoration's container is the area which is filled if [isFilled] is
/// The decoration's container is the area which is filled if [filled] is
/// true and bordered per the [border]. It's the area adjacent to
/// [decoration.icon] and above the widgets that contain [helperText],
/// [errorText], and [counterText].
@@ -2432,7 +2486,7 @@ class InputDecoration {
/// a given state, all four borders – [errorBorder], [focusedBorder],
/// [enabledBorder], [disabledBorder] – must be set.
///
/// The decoration's container is the area which is filled if [isFilled] is
/// The decoration's container is the area which is filled if [filled] is
/// true and bordered per the [border]. It's the area adjacent to
/// [InputDecoration.icon] and above the widgets that contain
/// [InputDecoration.helperText], [InputDecoration.errorText], and
@@ -2446,7 +2500,7 @@ class InputDecoration {
/// is not specified. This border's [InputBorder.borderSide] property is
/// configured by the InputDecorator, depending on the values of
/// [InputDecoration.errorText], [InputDecoration.enabled],
/// [InputDecorator.isFocused and the current [Theme].
/// [InputDecorator.isFocused] and the current [Theme].
///
/// Typically one of [UnderlineInputBorder] or [OutlineInputBorder].
/// If null, InputDecorator's default is `const UnderlineInputBorder()`.
@@ -2637,8 +2691,8 @@ class InputDecoration {
@override
int get hashCode {
// Split into multiple hashValues calls
// because the hashValues function is limited to 20 parameters.
// Split into two hashValues calls because the hashValues function is
// limited to 20 parameters.
return hashValues(
icon,
labelText,
@@ -2653,22 +2707,20 @@ class InputDecoration {
errorMaxLines,
hasFloatingPlaceholder,
isDense,
contentPadding,
isCollapsed,
filled,
fillColor,
border,
enabled,
prefixIcon,
hashValues(
contentPadding,
isCollapsed,
filled,
fillColor,
border,
enabled,
prefixIcon,
prefix,
prefixText,
prefixStyle,
suffixIcon,
suffix,
suffixText,
),
hashValues(
suffixStyle,
counterText,
counterStyle,
@@ -2774,7 +2826,7 @@ class InputDecorationTheme extends Diagnosticable {
/// Creates a value for [ThemeData.inputDecorationTheme] that
/// defines default values for [InputDecorator].
///
/// The values of [isDense], [isCollapsed], [isFilled], and [border] must
/// The values of [isDense], [isCollapsed], [filled], and [border] must
/// not be null.
const InputDecorationTheme({
this.labelStyle,
@@ -2860,7 +2912,7 @@ class InputDecorationTheme extends Diagnosticable {
/// The padding for the input decoration's container.
///
/// The decoration's container is the area which is filled if
/// [InputDecoration.isFilled] is true and bordered per the [border].
/// [InputDecoration.filled] is true and bordered per the [border].
/// It's the area adjacent to [InputDecoration.icon] and above the
/// [InputDecoration.icon] and above the widgets that contain
/// [InputDecoration.helperText], [InputDecoration.errorText], and
@@ -2894,11 +2946,11 @@ class InputDecorationTheme extends Diagnosticable {
/// If true the decoration's container is filled with [fillColor].
///
/// Typically this field set to true if [border] is
/// [const UnderlineInputBorder()].
/// Typically this field set to true if [border] is an
/// [UnderlineInputBorder].
///
/// The decoration's container is the area, defined by the border's
/// [InputBorder.getOuterPath], which is filled if [isFilled] is
/// [InputBorder.getOuterPath], which is filled if [filled] is
/// true and bordered per the [border].
///
/// This property is false by default.
@@ -2909,7 +2961,7 @@ class InputDecorationTheme extends Diagnosticable {
/// By default the fillColor is based on the current [Theme].
///
/// The decoration's container is the area, defined by the border's
/// [InputBorder.getOuterPath], which is filled if [isFilled] is
/// [InputBorder.getOuterPath], which is filled if [filled] is
/// true and bordered per the [border].
final Color fillColor;
@@ -3033,7 +3085,7 @@ class InputDecorationTheme extends Diagnosticable {
/// The shape of the border to draw around the decoration's container.
///
/// The decoration's container is the area which is filled if [isFilled] is
/// The decoration's container is the area which is filled if [filled] is
/// true and bordered per the [border]. It's the area adjacent to
/// [InputDecoration.icon] and above the widgets that contain
/// [InputDecoration.helperText], [InputDecoration.errorText], and
@@ -3047,7 +3099,7 @@ class InputDecorationTheme extends Diagnosticable {
/// is not specified. This border's [InputBorder.borderSide] property is
/// configured by the InputDecorator, depending on the values of
/// [InputDecoration.errorText], [InputDecoration.enabled],
/// [InputDecorator.isFocused and the current [Theme].
/// [InputDecorator.isFocused] and the current [Theme].
///
/// Typically one of [UnderlineInputBorder] or [OutlineInputBorder].
/// If null, InputDecorator's default is `const UnderlineInputBorder()`.