gecko-dev/dom/webidl/InputMethod.webidl

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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/**
* InputMethod API implements a bridge between the web content hosting an input
* element and the input content (a.k.a. input app, virtual keyboard app,
* or IME). This API is input content facing in order for it to interact with
* the remote input element.
* The API also contains a few Gaia System app only methods
* (marked with "input-manage" permission) for Gaia System app to interact with
* some types of inputs and to regulate the input apps.
*/
[JSImplementation="@mozilla.org/b2g-inputmethod;1",
NavigatorProperty="mozInputMethod",
Pref="dom.mozInputMethod.enabled",
CheckAnyPermissions="input input-manage"]
interface MozInputMethod : EventTarget {
/**
* Activate or decactive current API instance.
* Gaia System app call this method via BrowserElement#setInputMethodActive.
*/
[ChromeOnly]
void setActive(boolean isActive);
/**
* InputMethodManager contain a few global methods expose to input apps.
*/
readonly attribute MozInputMethodManager mgmt;
/**
* Fired when the input context changes, include changes from and to null.
* The new InputContext instance will be available in the event
* object under |inputcontext| property. When it changes to null it
* means the app (the user of this API) no longer has the control of
* the original focused input field.
* Note that if the app saves the original context, it might get
* void; implementation decides when to void the input context.
*/
[CheckAnyPermissions="input"]
attribute EventHandler oninputcontextchange;
/**
* An "input context" is mapped to a text field that the app is
* allow to mutate. This attribute should be null when there is no
* text field currently focused.
*/
[CheckAnyPermissions="input"]
readonly attribute MozInputContext? inputcontext;
/**
* Add a dynamically declared input.
*
* The id must not be the same with any statically declared input in the app
* manifest. If an input of the same id is already declared, the info of that
* input will be updated.
*/
[CheckAnyPermissions="input"]
Promise<void> addInput(DOMString inputId,
MozInputMethodInputManifest inputManifest);
/**
* Remove a dynamically declared input.
*
* The id must not be the same with any statically declared input in the app
* manifest. Silently resolves if the input is not previously declared;
* rejects if attempt to remove a statically declared input.
*/
[CheckAnyPermissions="input"]
Promise<void> removeInput(DOMString id);
/**
* Remove focus from the current input, usable by Gaia System app, globally,
* regardless of the current focus state.
*/
[CheckAnyPermissions="input-manage"]
void removeFocus();
/**
* The following are internal methods for Firefox OS System app only,
* for handling the "option" group inputs.
*/
/**
* Set the value on the currently focused element. This has to be used
* for special situations where the value had to be chosen amongst a
* list (type=month) or a widget (type=date, time, etc.).
* If the value passed in parameter isn't valid (in the term of HTML5
* Forms Validation), the value will simply be ignored by the element.
*/
[CheckAnyPermissions="input-manage"]
void setValue(DOMString value);
/**
* Select the <select> option specified by index.
* If this method is called on a <select> that support multiple
* selection, then the option specified by index will be added to
* the selection.
* If this method is called for a select that does not support multiple
* selection the previous element will be unselected.
*/
[CheckAnyPermissions="input-manage"]
void setSelectedOption(long index);
/**
* Select the <select> options specified by indexes. All other options
* will be deselected.
* If this method is called for a <select> that does not support multiple
* selection, then the last index specified in indexes will be selected.
*/
[CheckAnyPermissions="input-manage"]
void setSelectedOptions(sequence<long> indexes);
};
/**
* InputMethodManager contains a few of the global methods for the input app.
*/
[JSImplementation="@mozilla.org/b2g-imm;1",
Pref="dom.mozInputMethod.enabled",
CheckAnyPermissions="input input-manage"]
interface MozInputMethodManager : EventTarget {
/**
* Ask the OS to show a list of available inputs for users to switch from.
* OS should sliently ignore this request if the app is currently not the
* active one.
*/
[CheckAllPermissions="input"]
void showAll();
/**
* Ask the OS to switch away from the current active input app.
* OS should sliently ignore this request if the app is currently not the
* active one.
*/
[CheckAllPermissions="input"]
void next();
/**
* If this method returns true, it is recommended that the input app provides
* a shortcut that would invoke the next() method above, for easy switching
* between inputs -- i.e. show a "global" button on screen if the input app
* implements an on-screen virtual keyboard.
*
* The returning value is depend on the inputType of the current input context.
*/
[CheckAllPermissions="input"]
boolean supportsSwitching();
/**
* Ask the OS to remove the input focus, will cause the lost of input context.
* OS should sliently ignore this request if the app is currently not the
* active one.
*/
[CheckAllPermissions="input"]
void hide();
/**
* Update Gecko with information on the input types which supportsSwitching()
* should return ture.
*
* @param types Array of input types in which supportsSwitching() should
* return true.
*/
[CheckAllPermissions="input-manage"]
void setSupportsSwitchingTypes(sequence<MozInputMethodInputContextInputTypes> types);
/**
* CustomEvent dispatches to System when there is an input to handle.
* If the API consumer failed to handle and call preventDefault(),
* there will be a message printed on the console.
*
* evt.detail is defined by MozInputContextFocusEventDetail.
*/
[CheckAnyPermissions="input-manage"]
attribute EventHandler oninputcontextfocus;
/**
* Event dispatches to System when there is no longer an input to handle.
* If the API consumer failed to handle and call preventDefault(),
* there will be a message printed on the console.
*/
[CheckAnyPermissions="input-manage"]
attribute EventHandler oninputcontextblur;
/**
* Event dispatches to System when there is a showAll() call.
* If the API consumer failed to handle and call preventDefault(),
* there will be a message printed on the console.
*/
[CheckAnyPermissions="input-manage"]
attribute EventHandler onshowallrequest;
/**
* Event dispatches to System when there is a next() call.
* If the API consumer failed to handle and call preventDefault(),
* there will be a message printed on the console.
*/
[CheckAnyPermissions="input-manage"]
attribute EventHandler onnextrequest;
/**
* Event dispatches to System when there is a addInput() call.
* The API consumer must call preventDefault() to indicate the event is
* consumed, otherwise the request is not considered handled even if
* waitUntil() was called.
*
* evt.detail is defined by MozInputRegistryEventDetail.
*/
[CheckAnyPermissions="input-manage"]
attribute EventHandler onaddinputrequest;
/**
* Event dispatches to System when there is a removeInput() call.
* The API consumer must call preventDefault() to indicate the event is
* consumed, otherwise the request is not considered handled even if
* waitUntil() was called.
*
* evt.detail is defined by MozInputRegistryEventDetail.
*/
[CheckAnyPermissions="input-manage"]
attribute EventHandler onremoveinputrequest;
};
/**
* Detail of the inputcontextfocus event.
*/
[JSImplementation="@mozilla.org/b2g-imm-focus;1",
Pref="dom.mozInputMethod.enabled",
CheckAnyPermissions="input-manage"]
interface MozInputContextFocusEventDetail {
/**
* The type of the focused input.
*/
readonly attribute MozInputMethodInputContextTypes type;
/**
* The input type of the focused input.
*/
readonly attribute MozInputMethodInputContextInputTypes inputType;
/**
* The following is only needed for rendering and handling "option" input types,
* in System app.
*/
/**
* Current value of the input.
*/
readonly attribute DOMString? value;
/**
* An object representing all the <optgroup> and <option> elements
* in the <select> element.
*/
[Pure, Cached, Frozen]
readonly attribute MozInputContextChoicesInfo? choices;
/**
* Max/min value of <input>
*/
readonly attribute DOMString? min;
readonly attribute DOMString? max;
};
/**
* Information about the options within the <select> element.
*/
dictionary MozInputContextChoicesInfo {
boolean multiple;
sequence<MozInputMethodChoiceDict> choices;
};
/**
* Content of the option header (<optgroup>) or an option (<option>).
*/
dictionary MozInputMethodChoiceDict {
boolean group;
DOMString text;
boolean disabled;
boolean? inGroup;
boolean? selected;
long? optionIndex;
};
/**
* detail of addinputrequest or removeinputrequest event.
*/
[JSImplementation="@mozilla.org/b2g-imm-input-registry;1",
Pref="dom.mozInputMethod.enabled",
CheckAnyPermissions="input-manage"]
interface MozInputRegistryEventDetail {
/**
* Manifest URL of the requesting app.
*/
readonly attribute DOMString manifestURL;
/**
* ID of the input
*/
readonly attribute DOMString inputId;
/**
* Input manifest of the input to add.
* Null for removeinputrequest event.
*/
[Pure, Cached, Frozen]
readonly attribute MozInputMethodInputManifest? inputManifest;
/**
* Resolve or Reject the addInput() or removeInput() call when the passed
* promises are resolved.
*/
[Throws]
void waitUntil(Promise<any> p);
};
/**
* The input context, which consists of attributes and information of current
* input field. It also hosts the methods available to the keyboard app to
* mutate the input field represented. An "input context" gets void when the
* app is no longer allowed to interact with the text field,
* e.g., the text field does no longer exist, the app is being switched to
* background, and etc.
*/
[JSImplementation="@mozilla.org/b2g-inputcontext;1",
Pref="dom.mozInputMethod.enabled",
CheckAnyPermissions="input"]
interface MozInputContext: EventTarget {
/**
* Type of the InputContext. See MozInputMethodInputContextTypes
*/
readonly attribute MozInputMethodInputContextTypes? type;
/**
* InputType of the InputContext. See MozInputMethodInputContextInputTypes.
*/
readonly attribute MozInputMethodInputContextInputTypes? inputType;
/**
* The inputmode string, representing the inputmode of the input.
* See http://www.whatwg.org/specs/web-apps/current-work/multipage/association-of-controls-and-forms.html#input-modalities:-the-inputmode-attribute
*/
readonly attribute DOMString? inputMode;
/**
* The primary language for the input field.
* It is the value of HTMLElement.lang.
* See http://www.whatwg.org/specs/web-apps/current-work/multipage/elements.html#htmlelement
*/
readonly attribute DOMString? lang;
/**
* Get the whole text content of the input field.
* @return DOMString
*/
Promise<DOMString> getText(optional long offset, optional long length);
/**
* The start and stop position of the current selection.
*/
readonly attribute long selectionStart;
readonly attribute long selectionEnd;
/**
* The text in the current input.
*/
readonly attribute DOMString? text;
/**
* The text before and after the begining of the selected text.
*
* You should use the text property instead because these properties are
* truncated at 100 characters.
*/
readonly attribute DOMString? textBeforeCursor;
readonly attribute DOMString? textAfterCursor;
/**
* Set the selection range of the the editable text.
* Note: This method cannot be used to move the cursor during composition. Calling this
* method will cancel composition.
* @param start The beginning of the selected text.
* @param length The length of the selected text.
*
* Note that the start position should be less or equal to the end position.
* To move the cursor, set the start and end position to the same value.
*
* @return boolean
*/
Promise<boolean> setSelectionRange(long start, long length);
/* User moves the cursor, or changes the selection with other means. If the text around
* cursor has changed, but the cursor has not been moved, the IME won't get notification.
*
* evt.detail is defined by MozInputContextSelectionChangeEventDetail.
*/
attribute EventHandler onselectionchange;
/**
* Commit text to current input field and replace text around
* cursor position. It will clear the current composition.
*
* @param text The string to be replaced with.
* @param offset The offset from the cursor position where replacing starts. Defaults to 0.
* @param length The length of text to replace. Defaults to 0.
* @return boolean
*/
Promise<boolean> replaceSurroundingText(DOMString text, optional long offset, optional long length);
/**
* Delete text around the cursor.
* @param offset The offset from the cursor position where deletion starts.
* @param length The length of text to delete.
* TODO: maybe updateSurroundingText(DOMString beforeText, DOMString afterText); ?
* @return boolean
*/
Promise<boolean> deleteSurroundingText(long offset, long length);
/**
* Notifies when the text around the cursor is changed, due to either text
* editing or cursor movement. If the cursor has been moved, but the text around has not
* changed, the IME won't get notification.
*
* evt.detail is defined by MozInputContextSurroundingTextChangeEventDetail.
*/
attribute EventHandler onsurroundingtextchange;
/**
* Send a string/character with its key events. There are two ways of invocating
* the method for backward compability purpose.
*
* (1) The recommended way, allow specifying DOM level 3 properties like |code|.
* @param dictOrKeyCode See MozInputMethodKeyboardEventDict.
* @param charCode disregarded
* @param modifiers disregarded
* @param repeat disregarded
*
* (2) Deprecated, reserved for backward compability.
* @param dictOrKeyCode keyCode of the key to send, should be one of the DOM_VK_ value in KeyboardEvent.
* @param charCode charCode of the character, should be 0 for non-printable keys.
* @param modifiers this paramater is no longer honored.
* @param repeat indicates whether a key would be sent repeatedly.
*
* @return A promise. Resolve to true if succeeds.
* Rejects to a string indicating the error.
*
* Note that, if you want to send a key n times repeatedly, make sure set
* parameter repeat to true and invoke sendKey n times, and invoke keyup
* after the end of the input.
*/
Promise<boolean> sendKey((MozInputMethodRequiredKeyboardEventDict or long) dictOrKeyCode,
optional long charCode,
optional long modifiers,
optional boolean repeat);
/**
* Send a string/character with keydown, and keypress events.
* keyup should be called afterwards to ensure properly sequence.
*
* @param dict See MozInputMethodKeyboardEventDict.
*
* @return A promise. Resolve to true if succeeds.
* Rejects to a string indicating the error.
*/
Promise<boolean> keydown(MozInputMethodRequiredKeyboardEventDict dict);
/**
* Send a keyup event. keydown should be called first to ensure properly sequence.
*
* @param dict See MozInputMethodKeyboardEventDict.
*
* @return A promise. Resolve to true if succeeds.
* Rejects to a string indicating the error.
*/
Promise<boolean> keyup(MozInputMethodRequiredKeyboardEventDict dict);
/**
* Set current composing text. This method will start composition or update
* composition if it has started. The composition will be started right
* before the cursor position and any selected text will be replaced by the
* composing text. When the composition is started, calling this method can
* update the text and move cursor winthin the range of the composing text.
* @param text The new composition text to show.
* @param cursor The new cursor position relative to the start of the
* composition text. The cursor should be positioned within the composition
* text. This means the value should be >= 0 and <= the length of
* composition text. Defaults to the lenght of composition text, i.e., the
* cursor will be positioned after the composition text.
* @param clauses The array of composition clause information. If not set,
* only one clause is supported.
* @param dict The properties of the keyboard event that cause the composition
* to set. keydown or keyup event will be fired if it's necessary.
* For compatibility, we recommend that you should always set this argument
* if it's caused by a key operation.
*
* The composing text, which is shown with underlined style to distinguish
* from the existing text, is used to compose non-ASCII characters from
* keystrokes, e.g. Pinyin or Hiragana. The composing text is the
* intermediate text to help input complex character and is not committed to
* current input field. Therefore if any text operation other than
* composition is performed, the composition will automatically end. Same
* apply when the inputContext is lost during an unfinished composition
* session.
*
* To finish composition and commit text to current input field, an IME
* should call |endComposition|.
*/
Promise<boolean> setComposition(DOMString text,
optional long cursor,
optional sequence<CompositionClauseParameters> clauses,
optional MozInputMethodKeyboardEventDict dict);
/**
* End composition, clear the composing text and commit given text to
* current input field. The text will be committed before the cursor
* position.
* @param text The text to commited before cursor position. If empty string
* is given, no text will be committed.
* @param dict The properties of the keyboard event that cause the composition
* to end. keydown or keyup event will be fired if it's necessary.
* For compatibility, we recommend that you should always set this argument
* if it's caused by a key operation.
*
* Note that composition always ends automatically with nothing to commit if
* the composition does not explicitly end by calling |endComposition|, but
* is interrupted by |sendKey|, |setSelectionRange|,
* |replaceSurroundingText|, |deleteSurroundingText|, user moving the
* cursor, changing the focus, etc.
*/
Promise<boolean> endComposition(optional DOMString text,
optional MozInputMethodKeyboardEventDict dict);
};
/**
* Detail of the selectionchange event.
*/
[JSImplementation="@mozilla.org/b2g-imm-selectionchange;1",
Pref="dom.mozInputMethod.enabled",
CheckAnyPermissions="input"]
interface MozInputContextSelectionChangeEventDetail {
/**
* Indicate whether or not the change is due to our own action from,
* for example, sendKey() call.
*
* Note: this property is untrustworthy because it would still be true even
* if script in the page changed the text synchronously upon responding to
* events trigger by the call.
*/
readonly attribute boolean ownAction;
/**
* The start and stop position of the current selection.
*/
readonly attribute long selectionStart;
readonly attribute long selectionEnd;
};
/**
* Detail of the surroundingtextchange event.
*/
[JSImplementation="@mozilla.org/b2g-imm-surroundingtextchange;1",
Pref="dom.mozInputMethod.enabled",
CheckAnyPermissions="input"]
interface MozInputContextSurroundingTextChangeEventDetail {
/**
* Indicate whether or not the change is due to our own action from,
* for example, sendKey() call.
*
* Note: this property is untrustworthy because it would still be true even
* if script in the page changed the text synchronously upon responding to
* events trigger by the call.
*/
readonly attribute boolean ownAction;
/**
* The text in the current input.
*/
readonly attribute DOMString? text;
/**
* The text before and after the begining of the selected text.
*
* You should use the text property instead because these properties are
* truncated at 100 characters.
*/
readonly attribute DOMString? textBeforeCursor;
readonly attribute DOMString? textAfterCursor;
};
enum CompositionClauseSelectionType {
"raw-input",
"selected-raw-text",
"converted-text",
"selected-converted-text"
};
dictionary CompositionClauseParameters {
CompositionClauseSelectionType selectionType = "raw-input";
long length;
};
/**
* Types are HTML tag names of the inputs that is explosed with InputContext,
* *and* the special keyword "contenteditable" for contenteditable element.
*/
enum MozInputMethodInputContextTypes {
"input", "textarea", "contenteditable",
/**
* <select> is managed by the API but it is handled by the System app only,
* so this value is only accessible by System app from inputcontextfocus event.
*/
"select"
};
/**
* InputTypes of the input that InputContext is representing. The value
* is inferred from the type attribute of element.
*
* See https://html.spec.whatwg.org/multipage/forms.html#states-of-the-type-attribute
* for types of HTMLInputElement.
*
* They are divided into groups -- an layout/input capable of handling one type
* in the group is considered as capable of handling all of the types in the
* same group.
* The layout/input that could handle type "text" is considered as the fallback
* if none of layout/input installed can handle a specific type.
*
* Groups and fallbacks is enforced in Gaia System app currently.
*
* Noted that the actual virtual keyboard to show, for example in the case of
* Gaia Keyboard app, will also depend on the inputMode of the input element.
*/
enum MozInputMethodInputContextInputTypes {
/**
* Group "text". Be reminded that contenteditable element is assigned with
* an input type of "textarea".
*/
"text", "search", "textarea",
/**
* Group "number"
*/
"number", "tel",
/**
* Group "url"
*/
"url",
/**
* Group "email"
*/
"email",
/**
* Group "password".
* An non-Latin alphabet layout/input should not be able to handle this type.
*/
"password",
/**
* Group "option". These types are handled by System app itself currently, so
* no input app will be set to active for these input types.
* System app access these types from inputcontextfocus event.
* ("select-one" and "select-multiple" are valid HTMLSelectElement#type.)
*/
"datetime", "date", "month", "week", "time", "datetime-local", "color",
"select-one", "select-multiple"
/**
* These types are ignored by the API even though they are valid
* HTMLInputElement#type.
*/
//"checkbox", "radio", "file", "submit", "image", "range", "reset", "button"
};
/**
* An input app can host multiple inputs (a.k.a. layouts) and the capability of
* the input is described by the input manifest.
*/
dictionary MozInputMethodInputManifest {
required DOMString launch_path;
required DOMString name;
DOMString? description;
sequence<MozInputMethodInputContextInputTypes> types;
};
/**
* A MozInputMethodKeyboardEventDictBase contains the following properties,
* indicating the properties of the keyboard event caused.
*
* This is the base dictionary type for us to create two child types that could
* be used as argument type in two types of methods, as WebIDL parser required.
*
*/
dictionary MozInputMethodKeyboardEventDictBase {
/**
* String/character to output, or a registered name of non-printable key.
* (To be defined in the inheriting dictionary types.)
*/
// DOMString key;
/**
* String/char indicating the virtual hardware key pressed. Optional.
* Must be a value defined in
* http://www.w3.org/TR/DOM-Level-3-Events-code/#keyboard-chording-virtual
* If your keyboard app emulates physical keyboard layout, this value should
* not be empty string. Otherwise, it should be empty string.
*/
DOMString code = "";
/**
* keyCode of the keyboard event. Optional.
* To be disregarded if |key| is an alphanumeric character.
* If the key causes inputting a character and if your keyboard app emulates
* a physical keyboard layout, this value should be same as the value used
* by Firefox for desktop. If the key causes inputting an ASCII character
* but if your keyboard app doesn't emulate any physical keyboard layouts,
* the value should be proper value for the key value.
*/
long? keyCode;
/**
* Indicates whether a key would be sent repeatedly. Optional.
*/
boolean repeat = false;
/**
* Optional. True if |key| property is explicitly referring to a printable key.
* When this is set, key will be printable even if the |key| value matches any
* of the registered name of non-printable keys.
*/
boolean printable = false;
};
/**
* For methods like setComposition() and endComposition(), the optional
* dictionary type argument is really optional when all of it's property
* are optional.
* This dictionary type is used to denote that argument.
*/
dictionary MozInputMethodKeyboardEventDict : MozInputMethodKeyboardEventDictBase {
DOMString? key;
};
/**
* For methods like keydown() and keyup(), the dictionary type argument is
* considered required only if at least one of it's property is required.
* This dictionary type is used to denote that argument.
*/
dictionary MozInputMethodRequiredKeyboardEventDict : MozInputMethodKeyboardEventDictBase {
required DOMString key;
};