Ghost/ghost/admin/app/mixins/ed-editor-api.js

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import Ember from 'ember';
var EditorAPI = Ember.Mixin.create({
/**
* Get Value
*
* Get the full contents of the textarea
*
* @returns {String}
*/
getValue: function () {
return this.$().val();
},
/**
* Get Selection
*
* Return the currently selected text from the textarea
*
* @returns {Selection}
*/
getSelection: function () {
return this.$().getSelection();
},
/**
* Get Line To Cursor
*
* Fetch the string of characters from the start of the given line up to the cursor
* @returns {{text: string, start: number}}
*/
getLineToCursor: function () {
var selection = this.$().getSelection(),
value = this.getValue(),
lineStart;
// Normalise newlines
value = value.replace('\r\n', '\n');
// We want to look at the characters behind the cursor
lineStart = value.lastIndexOf('\n', selection.start - 1) + 1;
return {
text: value.substring(lineStart, selection.start),
start: lineStart
};
},
/**
* Get Line
*
* Return the string of characters for the line the cursor is currently on
*
* @returns {{text: string, start: number, end: number}}
*/
getLine: function () {
var selection = this.$().getSelection(),
value = this.getValue(),
lineStart,
lineEnd;
// Normalise newlines
value = value.replace('\r\n', '\n');
// We want to look at the characters behind the cursor
lineStart = value.lastIndexOf('\n', selection.start - 1) + 1;
lineEnd = value.indexOf('\n', selection.start);
lineEnd = lineEnd === -1 ? value.length - 1 : lineEnd;
return {
// jscs:disable
text: value.substring(lineStart, lineEnd).replace(/^\n/, ''),
// jscs:enable
start: lineStart,
end: lineEnd
};
},
/**
* Set Selection
*
* Set the section of text in the textarea that should be selected by the cursor
*
* @param {number} start
* @param {number} end
*/
setSelection: function (start, end) {
var $textarea = this.$();
if (start === 'end') {
start = $textarea.val().length;
}
end = end || start;
$textarea.setSelection(start, end);
},
/**
* Replace Selection
*
* @param {String} replacement - the string to replace with
* @param {number} replacementStart - where to start replacing
* @param {number} [replacementEnd] - when to stop replacing, defaults to replacementStart
* @param {String|boolean|Object} [cursorPosition] - where to put the cursor after replacing
*
* Cursor position after replacement defaults to the end of the replacement.
* Providing selectionStart only will cause the cursor to be placed there, or alternatively a range can be selected
* by providing selectionEnd.
*/
replaceSelection: function (replacement, replacementStart, replacementEnd, cursorPosition) {
var $textarea = this.$();
cursorPosition = cursorPosition || 'collapseToEnd';
replacementEnd = replacementEnd || replacementStart;
$textarea.setSelection(replacementStart, replacementEnd);
if (['select', 'collapseToStart', 'collapseToEnd'].indexOf(cursorPosition) !== -1) {
$textarea.replaceSelectedText(replacement, cursorPosition);
} else {
$textarea.replaceSelectedText(replacement);
if (cursorPosition.hasOwnProperty('start')) {
$textarea.setSelection(cursorPosition.start, cursorPosition.end);
} else {
$textarea.setSelection(cursorPosition, cursorPosition);
}
}
$textarea.focus();
// Tell the editor it has changed, as programmatic replacements won't trigger this automatically
this.sendAction('onChange');
}
});
export default EditorAPI;