Typecho自定义后台编辑器功能

首先看下效果图

使用方法

Typecho_Plugin::factory('admin/write-post.php')->bottom = array('Editor', 'edit');
Typecho_Plugin::factory('admin/write-page.php')->bottom = array('Editor', 'edit');

class Editor
{
    public static function edit()
    {
        echo "<script src='" . Helper::options()->themeUrl . '/typecho/editor/joe.extend.js' . "'></script>";
        echo "<script src='" . Helper::options()->themeUrl . '/typecho/editor/joe.editor.js' . "'></script>";
    }
}

下面的 joe.extend.js 没压缩也没加密，下面是 joe.extend.js 源码

(function ($) {
    $.fn.extend({
        /* 按键盘实现插入内容 */
        shortcuts: function () {
            this.keydown(function (e) {
                var _this = $(this);
                e.stopPropagation();
                if (e.altKey) {
                    switch (e.keyCode) {
                        case 67:
                            _this.insertContent('[code]' + _this.selectionRange() + '[/code]');
                            break;
                    }
                }
            });
        },
        /* 插入内容 */
        insertContent: function (myValue, t) {
            var $t = $(this)[0];
            if (document.selection) {
                this.focus();
                var sel = document.selection.createRange();
                sel.text = myValue;
                this.focus();
                sel.moveStart('character', -l);
                var wee = sel.text.length;
                if (arguments.length == 2) {
                    var l = $t.value.length;
                    sel.moveEnd('character', wee + t);
                    t <= 0 ? sel.moveStart('character', wee - 2 * t - myValue.length) : sel.moveStart('character', wee - t - myValue.length);
                    sel.select();
                }
            } else if ($t.selectionStart || $t.selectionStart == '0') {
                var startPos = $t.selectionStart;
                var endPos = $t.selectionEnd;
                var scrollTop = $t.scrollTop;
                $t.value = $t.value.substring(0, startPos) + myValue + $t.value.substring(endPos, $t.value.length);
                this.focus();
                $t.selectionStart = startPos + myValue.length;
                $t.selectionEnd = startPos + myValue.length;
                $t.scrollTop = scrollTop;
                if (arguments.length == 2) {
                    $t.setSelectionRange(startPos - t, $t.selectionEnd + t);
                    this.focus();
                }
            } else {
                this.value += myValue;
                this.focus();
            }
        },
        /* 选择 */
        selectionRange: function (start, end) {
            var str = '';
            var thisSrc = this[0];
            if (start === undefined) {
                if (/input|textarea/i.test(thisSrc.tagName) && /firefox/i.test(navigator.userAgent)) str = thisSrc.value.substring(thisSrc.selectionStart, thisSrc.selectionEnd);
                else if (document.selection) str = document.selection.createRange().text;
                else str = document.getSelection().toString();
            } else {
                if (!/input|textarea/.test(thisSrc.tagName.toLowerCase())) return false;
                end === undefined && (end = start);
                if (thisSrc.setSelectionRange) {
                    thisSrc.setSelectionRange(start, end);
                    this.focus();
                } else {
                    var range = thisSrc.createTextRange();
                    range.move('character', start);
                    range.moveEnd('character', end - start);
                    range.select();
                }
            }
            if (start === undefined) return str;
            else return this;
        }
    });
})(jQuery);

上面的shortcuts方法主要用于实现按下键盘插入内容

接着看 joe.edit.js的内容

/* 增加自定义功能 */
const items = [
    {
        title: '回复可见',
        id: 'wmd-hide-button',
        svg: '<svg t="1612402690962" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="15751" width="20" height="20"><path d="M554.666667 438.101333V277.333333h-85.333334v160.768L330.112 357.717333l-42.666667 73.898667L426.666667 512l-139.221334 80.384 42.666667 73.898667L469.333333 585.898667V746.666667h85.333334v-160.768l139.221333 80.384 42.666667-73.898667L597.333333 512l139.221334-80.384-42.666667-73.898667L554.666667 438.101333z" p-id="15752" fill="#9b9b9b"></path></svg>',
        text: '\n[@hide]这里的内容回复后才能看见[/hide]\n'
    }
];

items.forEach(_ => {
    let item = $(`<li class="wmd-button" id="${_.id}" title="${_.title}">${_.svg}</li>`);
    item.on('click', function () {
        $('#text').insertContent(_.text);
    });
    $('#wmd-button-row').append(item);
});