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475 lines
16 KiB
JavaScript
475 lines
16 KiB
JavaScript
define("dijit/form/_TextBoxMixin", [
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"dojo/_base/array", // array.forEach
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"dojo/_base/declare", // declare
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"dojo/dom", // dom.byId
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"dojo/_base/event", // event.stop
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"dojo/keys", // keys.ALT keys.CAPS_LOCK keys.CTRL keys.META keys.SHIFT
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"dojo/_base/lang", // lang.mixin
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"dojo/on", // on
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"../main" // for exporting dijit._setSelectionRange, dijit.selectInputText
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], function(array, declare, dom, event, keys, lang, on, dijit){
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// module:
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// dijit/form/_TextBoxMixin
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var _TextBoxMixin = declare("dijit.form._TextBoxMixin", null, {
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// summary:
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// A mixin for textbox form input widgets
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// trim: Boolean
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// Removes leading and trailing whitespace if true. Default is false.
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trim: false,
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// uppercase: Boolean
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// Converts all characters to uppercase if true. Default is false.
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uppercase: false,
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// lowercase: Boolean
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// Converts all characters to lowercase if true. Default is false.
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lowercase: false,
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// propercase: Boolean
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// Converts the first character of each word to uppercase if true.
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propercase: false,
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// maxLength: String
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// HTML INPUT tag maxLength declaration.
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maxLength: "",
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// selectOnClick: [const] Boolean
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// If true, all text will be selected when focused with mouse
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selectOnClick: false,
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// placeHolder: String
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// Defines a hint to help users fill out the input field (as defined in HTML 5).
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// This should only contain plain text (no html markup).
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placeHolder: "",
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_getValueAttr: function(){
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// summary:
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// Hook so get('value') works as we like.
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// description:
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// For `dijit/form/TextBox` this basically returns the value of the `<input>`.
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//
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// For `dijit/form/MappedTextBox` subclasses, which have both
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// a "displayed value" and a separate "submit value",
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// This treats the "displayed value" as the master value, computing the
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// submit value from it via this.parse().
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return this.parse(this.get('displayedValue'), this.constraints);
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},
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_setValueAttr: function(value, /*Boolean?*/ priorityChange, /*String?*/ formattedValue){
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// summary:
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// Hook so set('value', ...) works.
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//
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// description:
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// Sets the value of the widget to "value" which can be of
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// any type as determined by the widget.
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//
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// value:
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// The visual element value is also set to a corresponding,
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// but not necessarily the same, value.
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//
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// formattedValue:
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// If specified, used to set the visual element value,
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// otherwise a computed visual value is used.
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//
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// priorityChange:
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// If true, an onChange event is fired immediately instead of
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// waiting for the next blur event.
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var filteredValue;
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if(value !== undefined){
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// TODO: this is calling filter() on both the display value and the actual value.
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// I added a comment to the filter() definition about this, but it should be changed.
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filteredValue = this.filter(value);
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if(typeof formattedValue != "string"){
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if(filteredValue !== null && ((typeof filteredValue != "number") || !isNaN(filteredValue))){
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formattedValue = this.filter(this.format(filteredValue, this.constraints));
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}else{ formattedValue = ''; }
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}
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}
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if(formattedValue != null /* and !undefined */ && ((typeof formattedValue) != "number" || !isNaN(formattedValue)) && this.textbox.value != formattedValue){
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this.textbox.value = formattedValue;
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this._set("displayedValue", this.get("displayedValue"));
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}
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if(this.textDir == "auto"){
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this.applyTextDir(this.focusNode, formattedValue);
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}
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this.inherited(arguments, [filteredValue, priorityChange]);
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},
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// displayedValue: String
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// For subclasses like ComboBox where the displayed value
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// (ex: Kentucky) and the serialized value (ex: KY) are different,
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// this represents the displayed value.
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//
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// Setting 'displayedValue' through set('displayedValue', ...)
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// updates 'value', and vice-versa. Otherwise 'value' is updated
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// from 'displayedValue' periodically, like onBlur etc.
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//
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// TODO: move declaration to MappedTextBox?
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// Problem is that ComboBox references displayedValue,
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// for benefit of FilteringSelect.
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displayedValue: "",
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_getDisplayedValueAttr: function(){
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// summary:
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// Hook so get('displayedValue') works.
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// description:
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// Returns the displayed value (what the user sees on the screen),
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// after filtering (ie, trimming spaces etc.).
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//
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// For some subclasses of TextBox (like ComboBox), the displayed value
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// is different from the serialized value that's actually
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// sent to the server (see `dijit/form/ValidationTextBox.serialize()`)
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// TODO: maybe we should update this.displayedValue on every keystroke so that we don't need
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// this method
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// TODO: this isn't really the displayed value when the user is typing
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return this.filter(this.textbox.value);
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},
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_setDisplayedValueAttr: function(/*String*/ value){
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// summary:
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// Hook so set('displayedValue', ...) works.
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// description:
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// Sets the value of the visual element to the string "value".
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// The widget value is also set to a corresponding,
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// but not necessarily the same, value.
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if(value == null /* or undefined */){ value = '' }
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else if(typeof value != "string"){ value = String(value) }
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this.textbox.value = value;
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// sets the serialized value to something corresponding to specified displayedValue
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// (if possible), and also updates the textbox.value, for example converting "123"
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// to "123.00"
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this._setValueAttr(this.get('value'), undefined);
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this._set("displayedValue", this.get('displayedValue'));
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// textDir support
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if(this.textDir == "auto"){
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this.applyTextDir(this.focusNode, value);
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}
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},
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format: function(value /*=====, constraints =====*/){
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// summary:
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// Replaceable function to convert a value to a properly formatted string.
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// value: String
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// constraints: Object
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// tags:
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// protected extension
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return value == null /* or undefined */ ? "" : (value.toString ? value.toString() : value);
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},
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parse: function(value /*=====, constraints =====*/){
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// summary:
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// Replaceable function to convert a formatted string to a value
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// value: String
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// constraints: Object
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// tags:
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// protected extension
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return value; // String
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},
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_refreshState: function(){
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// summary:
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// After the user types some characters, etc., this method is
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// called to check the field for validity etc. The base method
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// in `dijit/form/TextBox` does nothing, but subclasses override.
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// tags:
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// protected
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},
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/*=====
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onInput: function(event){
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// summary:
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// Connect to this function to receive notifications of various user data-input events.
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// Return false to cancel the event and prevent it from being processed.
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// event:
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// keydown | keypress | cut | paste | input
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// tags:
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// callback
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},
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=====*/
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onInput: function(){},
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__skipInputEvent: false,
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_onInput: function(/*Event*/ evt){
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// summary:
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// Called AFTER the input event has happened
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// set text direction according to textDir that was defined in creation
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if(this.textDir == "auto"){
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this.applyTextDir(this.focusNode, this.focusNode.value);
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}
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this._processInput(evt);
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},
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_processInput: function(/*Event*/ evt){
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// summary:
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// Default action handler for user input events
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this._refreshState();
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// In case someone is watch()'ing for changes to displayedValue
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this._set("displayedValue", this.get("displayedValue"));
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},
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postCreate: function(){
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// setting the value here is needed since value="" in the template causes "undefined"
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// and setting in the DOM (instead of the JS object) helps with form reset actions
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this.textbox.setAttribute("value", this.textbox.value); // DOM and JS values should be the same
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this.inherited(arguments);
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// normalize input events to reduce spurious event processing
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// onkeydown: do not forward modifier keys
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// set charOrCode to numeric keycode
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// onkeypress: do not forward numeric charOrCode keys (already sent through onkeydown)
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// onpaste & oncut: set charOrCode to 229 (IME)
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// oninput: if primary event not already processed, set charOrCode to 229 (IME), else do not forward
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var handleEvent = function(e){
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var charOrCode;
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if(e.type == "keydown"){
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charOrCode = e.keyCode;
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switch(charOrCode){ // ignore state keys
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case keys.SHIFT:
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case keys.ALT:
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case keys.CTRL:
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case keys.META:
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case keys.CAPS_LOCK:
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case keys.NUM_LOCK:
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case keys.SCROLL_LOCK:
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return;
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}
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if(!e.ctrlKey && !e.metaKey && !e.altKey){ // no modifiers
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switch(charOrCode){ // ignore location keys
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case keys.NUMPAD_0:
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case keys.NUMPAD_1:
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case keys.NUMPAD_2:
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case keys.NUMPAD_3:
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case keys.NUMPAD_4:
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case keys.NUMPAD_5:
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case keys.NUMPAD_6:
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case keys.NUMPAD_7:
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case keys.NUMPAD_8:
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case keys.NUMPAD_9:
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case keys.NUMPAD_MULTIPLY:
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case keys.NUMPAD_PLUS:
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case keys.NUMPAD_ENTER:
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case keys.NUMPAD_MINUS:
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case keys.NUMPAD_PERIOD:
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case keys.NUMPAD_DIVIDE:
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return;
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}
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if((charOrCode >= 65 && charOrCode <= 90) || (charOrCode >= 48 && charOrCode <= 57) || charOrCode == keys.SPACE){
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return; // keypress will handle simple non-modified printable keys
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}
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var named = false;
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for(var i in keys){
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if(keys[i] === e.keyCode){
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named = true;
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break;
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}
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}
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if(!named){ return; } // only allow named ones through
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}
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}
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charOrCode = e.charCode >= 32 ? String.fromCharCode(e.charCode) : e.charCode;
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if(!charOrCode){
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charOrCode = (e.keyCode >= 65 && e.keyCode <= 90) || (e.keyCode >= 48 && e.keyCode <= 57) || e.keyCode == keys.SPACE ? String.fromCharCode(e.keyCode) : e.keyCode;
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}
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if(!charOrCode){
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charOrCode = 229; // IME
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}
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if(e.type == "keypress"){
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if(typeof charOrCode != "string"){ return; }
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if((charOrCode >= 'a' && charOrCode <= 'z') || (charOrCode >= 'A' && charOrCode <= 'Z') || (charOrCode >= '0' && charOrCode <= '9') || (charOrCode === ' ')){
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if(e.ctrlKey || e.metaKey || e.altKey){ return; } // can only be stopped reliably in keydown
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}
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}
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if(e.type == "input"){
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if(this.__skipInputEvent){ // duplicate event
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this.__skipInputEvent = false;
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return;
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}
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}else{
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this.__skipInputEvent = true;
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}
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// create fake event to set charOrCode and to know if preventDefault() was called
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var faux = { faux: true }, attr;
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for(attr in e){
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if(attr != "layerX" && attr != "layerY"){ // prevent WebKit warnings
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var v = e[attr];
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if(typeof v != "function" && typeof v != "undefined"){ faux[attr] = v; }
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}
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}
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lang.mixin(faux, {
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charOrCode: charOrCode,
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_wasConsumed: false,
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preventDefault: function(){
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faux._wasConsumed = true;
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e.preventDefault();
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},
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stopPropagation: function(){ e.stopPropagation(); }
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});
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// give web page author a chance to consume the event
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//console.log(faux.type + ', charOrCode = (' + (typeof charOrCode) + ') ' + charOrCode + ', ctrl ' + !!faux.ctrlKey + ', alt ' + !!faux.altKey + ', meta ' + !!faux.metaKey + ', shift ' + !!faux.shiftKey);
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if(this.onInput(faux) === false){ // return false means stop
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faux.preventDefault();
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faux.stopPropagation();
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}
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if(faux._wasConsumed){ return; } // if preventDefault was called
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this.defer(function(){ this._onInput(faux); }); // widget notification after key has posted
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};
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this.own(on(this.textbox, "keydown, keypress, paste, cut, input, compositionend", lang.hitch(this, handleEvent)));
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},
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_blankValue: '', // if the textbox is blank, what value should be reported
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filter: function(val){
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// summary:
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// Auto-corrections (such as trimming) that are applied to textbox
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// value on blur or form submit.
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// description:
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// For MappedTextBox subclasses, this is called twice
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//
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// - once with the display value
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// - once the value as set/returned by set('value', ...)
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//
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// and get('value'), ex: a Number for NumberTextBox.
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//
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// In the latter case it does corrections like converting null to NaN. In
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// the former case the NumberTextBox.filter() method calls this.inherited()
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// to execute standard trimming code in TextBox.filter().
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//
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// TODO: break this into two methods in 2.0
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//
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// tags:
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// protected extension
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if(val === null){ return this._blankValue; }
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if(typeof val != "string"){ return val; }
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if(this.trim){
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val = lang.trim(val);
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}
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if(this.uppercase){
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val = val.toUpperCase();
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}
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if(this.lowercase){
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val = val.toLowerCase();
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}
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if(this.propercase){
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val = val.replace(/[^\s]+/g, function(word){
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return word.substring(0,1).toUpperCase() + word.substring(1);
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});
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}
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return val;
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},
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_setBlurValue: function(){
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this._setValueAttr(this.get('value'), true);
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},
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_onBlur: function(e){
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if(this.disabled){ return; }
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this._setBlurValue();
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this.inherited(arguments);
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},
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_isTextSelected: function(){
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return this.textbox.selectionStart != this.textbox.selectionEnd;
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},
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_onFocus: function(/*String*/ by){
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if(this.disabled || this.readOnly){ return; }
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// Select all text on focus via click if nothing already selected.
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// Since mouse-up will clear the selection, need to defer selection until after mouse-up.
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// Don't do anything on focus by tabbing into the widget since there's no associated mouse-up event.
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if(this.selectOnClick && by == "mouse"){
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this._selectOnClickHandle = this.connect(this.domNode, "onmouseup", function(){
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// Only select all text on first click; otherwise users would have no way to clear
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// the selection.
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this.disconnect(this._selectOnClickHandle);
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this._selectOnClickHandle = null;
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// Check if the user selected some text manually (mouse-down, mouse-move, mouse-up)
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// and if not, then select all the text
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if(!this._isTextSelected()){
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_TextBoxMixin.selectInputText(this.textbox);
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}
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});
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// in case the mouseup never comes
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this.defer(function(){
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if(this._selectOnClickHandle){
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this.disconnect(this._selectOnClickHandle);
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this._selectOnClickHandle = null;
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}
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}, 500); // if mouseup not received soon, then treat it as some gesture
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}
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// call this.inherited() before refreshState(), since this.inherited() will possibly scroll the viewport
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// (to scroll the TextBox into view), which will affect how _refreshState() positions the tooltip
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this.inherited(arguments);
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this._refreshState();
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},
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reset: function(){
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// Overrides `dijit/_FormWidget/reset()`.
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// Additionally resets the displayed textbox value to ''
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this.textbox.value = '';
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this.inherited(arguments);
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},
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_setTextDirAttr: function(/*String*/ textDir){
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// summary:
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// Setter for textDir.
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// description:
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// Users shouldn't call this function; they should be calling
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// set('textDir', value)
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// tags:
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// private
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// only if new textDir is different from the old one
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// and on widgets creation.
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if(!this._created
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|| this.textDir != textDir){
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this._set("textDir", textDir);
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// so the change of the textDir will take place immediately.
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this.applyTextDir(this.focusNode, this.focusNode.value);
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}
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}
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});
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_TextBoxMixin._setSelectionRange = dijit._setSelectionRange = function(/*DomNode*/ element, /*Number?*/ start, /*Number?*/ stop){
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if(element.setSelectionRange){
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element.setSelectionRange(start, stop);
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}
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};
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_TextBoxMixin.selectInputText = dijit.selectInputText = function(/*DomNode*/ element, /*Number?*/ start, /*Number?*/ stop){
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// summary:
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// Select text in the input element argument, from start (default 0), to stop (default end).
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// TODO: use functions in _editor/selection.js?
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element = dom.byId(element);
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if(isNaN(start)){ start = 0; }
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if(isNaN(stop)){ stop = element.value ? element.value.length : 0; }
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try{
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element.focus();
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_TextBoxMixin._setSelectionRange(element, start, stop);
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}catch(e){ /* squelch random errors (esp. on IE) from unexpected focus changes or DOM nodes being hidden */ }
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};
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return _TextBoxMixin;
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});
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