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_canAddItem private function to validate a user can add an item

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Josh Johnson 2016-08-14 17:14:55 +01:00
parent 9da6b57b66
commit 84bec3804e
4 changed files with 98 additions and 109 deletions
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14
README.md
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@ -183,6 +183,13 @@ Pass an array of objects:
<strong>Usage:</strong> Whether a user can edit items. An items value can be edited by pressing the backspace.
### duplicateItems
<strong>Type:</strong> `Boolean` <strong>Default:</strong> `true`
<strong>Input types affected:</strong> `text`, `select-multiple`
<strong>Usage:</strong> Whether a user can input/choose a duplicate item.
### delimiter
<strong>Type:</strong> `String` <strong>Default:</strong> `,`
@ -190,13 +197,6 @@ Pass an array of objects:
<strong>Usage:</strong> What divides each value. By default the delimited value would be `"Value 1, Value 2, Value 3"`.
### duplicates
<strong>Type:</strong> `Boolean` <strong>Default:</strong> `true`
<strong>Input types affected:</strong> `text`
<strong>Usage:</strong> Whether a user can input a duplicate item.
### paste
<strong>Type:</strong> `Boolean` <strong>Default:</strong> `true`

4
assets/scripts/dist/choices.min.js vendored
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File diff suppressed because one or more lines are too long

160
assets/scripts/src/choices.js
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@ -668,48 +668,6 @@ export class Choices {
}
}
/**
* Process enter key event
* @param {Array} activeItems Items that are currently active
* @return
* @private
*/
_handleEnter(activeItems, value) {
let canUpdate = true;
if(this.config.addItems) {
if (this.config.maxItemCount && this.config.maxItemCount > 0 && this.config.maxItemCount <= this.itemList.children.length) {
// If there is a max entry limit and we have reached that limit
// don't update
canUpdate = false;
} else if(this.config.duplicateItems === false && this.passedElement.value) {
// If no duplicates are allowed, and the value already exists
// in the array, don't update
canUpdate = !activeItems.some((item) => item.value === value);
}
} else {
canUpdate = false;
}
if (canUpdate) {
let canAddItem = true;
// If a user has supplied a regular expression filter
if(this.config.regexFilter) {
// Determine whether we can update based on whether
// our regular expression passes
canAddItem = this._regexFilter(value);
}
// All is good, add
if(canAddItem) {
this.toggleDropdown();
this._addItem(value);
this._triggerChange(value);
this.clearInput(this.passedElement);
}
}
};
/**
* Process enter/click of an item button
@ -780,6 +738,7 @@ export class Choices {
if(choice && !choice.selected && !choice.disabled) {
const hasActiveDropdown = this.dropdown.classList.contains(this.config.classNames.activeState);
let canAddItem = true;
if(this.config.maxItemCount > 0 && this.config.maxItemCount <= activeItems.length && this.passedElement.type === 'select-multiple') {
@ -827,6 +786,50 @@ export class Choices {
}
};
/**
* Validates whether an item can be added by a user
* @param {Array} activeItems The currently active items
* @param {String} value Value of item to add
* @return {Object} Response: Whether user can add item
* Notice: Notice show in dropdown
*/
_canAddItem(activeItems, value) {
let canAddItem = true;
let notice = `Press Enter to add "${ value }"`;
if(this.passedElement.type === 'select-multiple' || this.passedElement.type === 'text') {
if (this.config.maxItemCount > 0 && this.config.maxItemCount <= this.itemList.children.length) {
// If there is a max entry limit and we have reached that limit
// don't update
canAddItem = false;
notice = `Only ${ this.config.maxItemCount } values can be added.`;
}
}
if(this.passedElement.type === 'text' && this.config.addItems) {
const isUnique = !activeItems.some((item) => item.value === value);
// If a user has supplied a regular expression filter
if(this.config.regexFilter) {
// Determine whether we can update based on whether
// our regular expression passes
canAddItem = this._regexFilter(value);
}
// If no duplicates are allowed, and the value already exists
// in the array
if(this.config.duplicateItems === false && !isUnique) {
canAddItem = false;
notice = `Only unique values can be added.`;
}
}
return {
response: canAddItem,
notice: notice,
};
}
/**
* Filter choices based on search value
* @param {String} value Value to filter by
@ -848,14 +851,13 @@ export class Choices {
if(newValue.length >= 1 && newValue !== currentValue + ' ') {
const haystack = this.store.getChoicesFilteredBySelectable();
const needle = newValue;
const keys = isType('Array', this.config.sortFields) ? this.config.sortFields : [this.config.sortFields];
const fuse = new Fuse(haystack, {
const keys = isType('Array', this.config.sortFields) ? this.config.sortFields : [this.config.sortFields];
const fuse = new Fuse(haystack, {
keys: keys,
shouldSort: true,
include: 'score',
});
const results = fuse.search(needle);
const results = fuse.search(needle);
this.currentValue = newValue;
this.highlightPosition = 0;
@ -921,9 +923,17 @@ export class Choices {
case enterKey:
// If enter key is pressed and the input has a value
if(target.value && this.passedElement.type === 'text') {
if(this.passedElement.type === 'text' && target.value) {
const value = this.input.value;
this._handleEnter(activeItems, value);
const canAddItem = this._canAddItem(activeItems, value);
// All is good, add
if(canAddItem.response) {
this.toggleDropdown();
this._addItem(value);
this._triggerChange(value);
this.clearInput(this.passedElement);
}
}
if(target.hasAttribute('data-button')) {
@ -934,17 +944,12 @@ export class Choices {
const highlighted = this.dropdown.querySelector(`.${this.config.classNames.highlightedState}`);
if(highlighted) {
let canAddItem = true;
if(this.config.maxItemCount > 0 && this.config.maxItemCount <= activeItems.length && this.passedElement.type === 'select-multiple') {
canAddItem = false;
}
if(canAddItem) {
const value = highlighted.getAttribute('data-value');
const label = highlighted.innerHTML;
const id = highlighted.getAttribute('data-id');
const value = highlighted.getAttribute('data-value');
const label = highlighted.innerHTML;
const id = highlighted.getAttribute('data-id');
const canAddItem = this._canAddItem(activeItems, value);
if(canAddItem.response) {
this._addItem(value, label, id);
this._triggerChange(value);
this.clearInput(this.passedElement);
@ -1039,34 +1044,25 @@ export class Choices {
// notice. Otherwise hide the dropdown
if(this.passedElement.type === 'text') {
const hasActiveDropdown = this.dropdown.classList.contains(this.config.classNames.activeState);
let dropdownItem;
if(this.input.value) {
const activeItems = this.store.getItemsFilteredByActive();
const isUnique = !activeItems.some((item) => item.value === this.input.value);
let canAddItem = true;
const value = this.input.value;
// If a user has supplied a regular expression filter
if(this.config.regexFilter) {
// Determine whether we can update based on whether
// our regular expression passes
canAddItem = this._regexFilter(this.input.value);
}
if(this.config.maxItemCount && this.config.maxItemCount > 0 && this.config.maxItemCount <= this.itemList.children.length) {
dropdownItem = this._getTemplate('notice', `Only ${ this.config.maxItemCount } values can be added.`);
} else if(!this.config.duplicateItems && !isUnique) {
dropdownItem = this._getTemplate('notice', `Only unique values can be added.`);
} else if(canAddItem) {
dropdownItem = this._getTemplate('notice', `Press Enter to add "${ this.input.value }"`);
}
if(canAddItem !== false) {
let dropdownItem;
if(value) {
const activeItems = this.store.getItemsFilteredByActive();
const canAddItem = this._canAddItem(activeItems, value);
if(canAddItem.notice) {
const dropdownItem = this._getTemplate('notice', canAddItem.notice);
this.dropdown.innerHTML = dropdownItem.outerHTML;
if(!this.dropdown.classList.contains(this.config.classNames.activeState)) {
}
if(canAddItem.response === true) {
if(!hasActiveDropdown) {
this.showDropdown();
}
} else {
if(hasActiveDropdown) {
if(!canAddItem.notice && hasActiveDropdown) {
this.hideDropdown();
}
}
@ -1075,6 +1071,7 @@ export class Choices {
this.hideDropdown();
}
}
} else {
const backKey = 46;
const deleteKey = 8;
@ -1092,6 +1089,7 @@ export class Choices {
this._searchChoices(this.input.value);
}
}
}
}

29
index.html
View file

@ -58,13 +58,6 @@
<option value="Dropdown item 3" selected>Dropdown item 3</option>
<option value="Dropdown item 4" disabled>Dropdown item 4</option>
</select>
<label for="choices-8">With pre-selected option</label>
<select class="form-control" data-choice name="choices-8" id="choices-8" placeholder="Choose an option" multiple>
<option value="Dropdown item 1">Dropdown item 1</option>
<option value="Dropdown item 2" selected>Dropdown item 2</option>
<option value="Dropdown item 3">Dropdown item 3</option>
</select>
<label for="choices-9">Option groups</label>
<select class="form-control" data-choice name="choices-9" id="choices-9" placeholder="This is a placeholder" multiple>
@ -199,8 +192,6 @@
},
});
console.log(example1.getValue());
var example2 = new Choices('#choices-2', {
paste: false,
duplicateItems: false,
@ -208,7 +199,7 @@
});
var example3 = new Choices('#choices-3', {
duplicates: false,
duplicateItems: false,
editItems: true,
regexFilter: /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/,
});
@ -227,7 +218,7 @@
items: ['josh@joshuajohnson.co.uk', { value: 'joe@bloggs.co.uk', label: 'Joe Bloggs' } ],
});
var example8 = new Choices('#choices-10', {
var example9 = new Choices('#choices-10', {
placeholder: true,
placeholderValue: 'Pick an Strokes record',
maxItemCount: 5,
@ -244,7 +235,7 @@
});
});
var example9 = new Choices('#choices-12', {
var example10 = new Choices('#choices-12', {
placeholder: true,
placeholderValue: 'Pick an Arctic Monkeys record'
}).ajax(function(callback) {
@ -252,7 +243,7 @@
.then(function(response) {
response.json().then(function(data) {
callback(data.releases, 'title', 'title');
example9.setValueByChoice('Fake Tales Of San Francisco');
example10.setValueByChoice('Fake Tales Of San Francisco');
});
})
.catch(function(error) {
@ -260,7 +251,7 @@
});
});
var example10 = new Choices('#choices-14', {
var example11 = new Choices('#choices-14', {
removeItemButton: true,
}).ajax(function(callback) {
var request = new XMLHttpRequest();
@ -273,7 +264,7 @@
if (status == 200) {
data = JSON.parse(request.responseText);
callback(data.releases, 'title', 'title');
example10.setValueByChoice('How Soon Is Now?');
example11.setValueByChoice('How Soon Is Now?');
} else {
console.error(status);
}
@ -282,12 +273,12 @@
request.send();
});
var example11 = new Choices('[data-choice]', {
var example12 = new Choices('[data-choice]', {
placeholderValue: 'This is a placeholder set in the config',
removeButton: true,
});
var example12 = new Choices('#choices-15', {
var example13 = new Choices('#choices-15', {
search: false,
choices: [
{value: 'One', label: 'Label One'},
@ -300,7 +291,7 @@
{value: 'Six', label: 'Label Six', selected: true},
], 'value', 'label');
var example13 = new Choices('#choices-16', {
var example14 = new Choices('#choices-16', {
placeholder: true,
}).setChoices([{
label: 'Group one',
@ -323,7 +314,7 @@
]
}], 'value', 'label');
var example14 = new Choices('#choices-17', {
var example15 = new Choices('#choices-17', {
choices: [
{value: 'One', label: 'Label One'},
{value: 'Two', label: 'Label Two', disabled: true},