通过从文本区域读取属性来Tinymce html5占位符



对于标准文本区域,我使用此插件创建一个占位符。我怎样才能扩展 tinymce,以便这也以这种方式工作。

例如,默认值是从 textarea 属性中读取的,然后在用户专注于 iframe 时清除。

与CKEditor类似:http://alfonsoml.blogspot.com.es/2012/04/placeholder-text-in-ckeditor.html

我重构了Tom Duke的代码,使其使用jquery插件在TinyMCE4上工作

$('textarea.tinymce').tinymce({
  script_url: _base + '/assets/js/tinymce/tinymce.min.js',
  theme: "modern",
  setup: function(editor) {
    // Set placeholder
    var placeholder = $('#' + editor.id).attr('placeholder');
    if (typeof placeholder !== 'undefined' && placeholder !== false) {
      var is_default = false;
      editor.on('init', function() {
        // get the current content
        var cont = editor.getContent();
        // If its empty and we have a placeholder set the value
        if (cont.length === 0) {
          editor.setContent(placeholder);
          // Get updated content
          cont = placeholder;
        }
        // convert to plain text and compare strings
        is_default = (cont == placeholder);
        // nothing to do
        if (!is_default) {
          return;
        }
      })
      .on('focus', function() {
        // replace the default content on focus if the same as original placeholder
        if (is_default) {
          editor.setContent('');
        }
      })
      .on('blur', function() {
        if (editor.getContent().length === 0) {
          editor.setContent(placeholder);
        }
      });
    }
  }
});

如果没有占位符属性,我会收到错误。

我结合了这个答案中的代码:jQuery 有 Attr 检查元素上是否有属性来获取下面处理该场景的修改代码:

setup: function(ed) {
// Set placeholder
var tinymce_placeholder = $('#'+ed.id);
var attr = tinymce_placeholder.attr('placeholder');
// For some browsers, `attr` is undefined; for others,
// `attr` is false.  Check for both.
    if (typeof attr !== 'undefined' && attr !== false) {
        var is_default = false;
        ed.onInit.add(function(ed) {
            // get the current content
            var cont = ed.getContent();
            // If its empty and we have a placeholder set the value
            if(cont.length == 0){
                ed.setContent(tinymce_placeholder.attr("placeholder"));
                // Get updated content
                cont = tinymce_placeholder.attr("placeholder");
            }
            // convert to plain text and compare strings
            is_default = (cont == tinymce_placeholder.attr("placeholder"));
            // nothing to do
            if (!is_default){
                return;
            }
        });
        ed.onMouseDown.add(function(ed,e) {
            // replace the default content on focus if the same as original placeholder
            if (is_default){
                ed.setContent('');
            }
        });
    }
}
上面的

答案对我不起作用,但这是我(对我来说)基于上述答案并使用onchange_callback的工作代码。希望它对某人有所帮助!

onchange_callback : function(ed){
            var tinymce_placeholder = $('#' + ed.id).attr("placeholder");     
            setTimeout(function () {
                var content = ed.getContent().replace(/<p>|</p>/g, '');
                if (content == '') {
                    ed.setContent(tinymce_placeholder);
                }
            }, 200);
        },
        setup: function (ed) {
            // Set placeholder
            var tinymce_placeholder = $('#' + ed.id);
            if (tinymce_placeholder.length) {
                ed.onInit.add(function (ed) {
                    var cont = ed.getContent();
                    if (cont.length == 0) {
                        ed.setContent(tinymce_placeholder.attr("placeholder"));
                    }
                });
                ed.onMouseDown.add(function (ed, e) {
                    var content = ed.getContent().replace(/<p>|</p>/g, '');
                    if (content == tinymce_placeholder.attr("placeholder")) {
                        ed.setContent('');
                    }
                });
            }
        }

试试这段代码:

为tinyMCE内联编辑器添加占位符文本:

    $scope.ContentOptions = {
    setup: function(editor) {
        editor.on('init', function () {
            // Default classes of tinyMCE are a bit weird
            // I add my own class on init
            // this also sets the empty class on the editor on init
            tinymce.DOM.addClass( editor.bodyElement, 'content-editor' );
        });
        // You CAN do it on 'change' event, but tinyMCE sets debouncing on that event
        // so for a tiny moment you would see the placeholder text and the text you you typed in the editor
        // the selectionchange event happens a lot more and with no debouncing, so in some situations
        // you might have to go back to the change event instead.
         editor.on('selectionchange', function () {
             if ( editor.getContent() === "" ) {
                 tinymce.DOM.addClass( editor.bodyElement, 'empty' );
             } else {
                 tinymce.DOM.removeClass( editor.bodyElement, 'empty' );
             }
         });
   }} 

视图中的 HTML 部件

<div data-placeholder="Content..." id="post-content-editor" ui-tinymce="ContentOptions" ng-model="newPostContentModel"></div>

最后是CSS来创建占位符文本(它从data-placeholder="Content..."获取它。但是你可以直接在CSS中做到这一点

    .content-editorr:before {
        display: none;
}
.content-editor.empty:before {
        display: block;
        position: absolute;
        content: attr(data-placeholder);
}

我在github上找到了它:

https://github.com/angular-ui/ui-tinymce/issues/197

我尝试了许多占位符解决方案,发现这个解决方案非常有用,因为它满足占位符的所有要求。我认为这是最好的解决方案,

对于 tinymce 4,我对未定义 ed.onInit 的事件有问题。 Tinymce 4 使用 ed.on('event' , callback) 代替。这是我的实现。我还使用焦点而不是鼠标按下作为清除编辑器时要侦听的事件,因为 mousdown 由于某种原因不起作用。

setup :  function(ed) {
        // Set placeholder
        var tinymce_placeholder = $('#'+ed.id);
        var attr = tinymce_placeholder.attr('placeholder');
        // For some browsers, `attr` is undefined; for others,
        // `attr` is false.  Check for both.
        if (typeof attr !== 'undefined' && attr !== false) {
            var is_default = false;
            ed.on('init' , function(ed) {
                // get the current content
                var cont = ed.target.getContent();
                // If its empty and we have a placeholder set the value
                if(cont.length == 0){
                    ed.target.setContent(tinymce_placeholder.attr("placeholder"));
                    // Get updated content
                    cont = tinymce_placeholder.attr("placeholder");
                }
                // convert to plain text and compare strings
                is_default = (cont == tinymce_placeholder.attr("placeholder"));
                // nothing to do
                if (!is_default){
                    return;
                }
            });
            ed.on('focus', function(ed,e) {
                // replace the default content on focus if the same as original placeholder
                if (is_default){
                    ed.target.setContent('');
                }
            });
        }
    }

希望这对其他答案有问题的任何人有所帮助

我找到了另一种永远不会弄乱文本区域内容的方法。我喜欢这样,这样我就不必有特殊条件来阻止用户提交只是占位符的内容。文章在这里找到,但我添加了 onclick 方法,以便标签是可点击的——如果没有这个,用户必须点击<label>下方或侧面。这适用于TinyMCE 4。

风格

.tinyMCEPlaceholder {
    top: 45px;
    left: 9px;
    z-index: 1;
    color: #bbbbbb;
    position: absolute;
    cursor:text;
}

.html

<div id="holder">
    <label for="tinymce" onclick="tinymce.execCommand('mceFocus',false,'area_id');">Type your article</label>
    <textarea id="comments" id="area_id" class="tinymce" name="comments" cols="40" rows="10"></textarea>
</div>
<!-- or -->
<div id="holder">
    <label for="tinymce" onclick="tinymce.get('area_id').fire('focus',{},false);">Type your article</label>
    <textarea id="comments" id="area_id" class="tinymce" name="comments" cols="40" rows="10"></textarea>
</div>

TinyMCE 设置

 // setup
    setup : function(ed) {
        /* toggle all labels that have the attr 'tinymce' */
        ed.on('init', function() {
            if(ed.getContent() != '') {
                $('label[for="tinymce"]').hide();
            }
            $(ed.getDoc()).contents().find('body').focus(function(){
                $('label[for="tinymce"]').hide();
            });
            $(ed.getDoc()).contents().find('body').blur(function(){
                if(ed.getContent() == '') {
                    $('label[for="tinymce"]').show();
                }
            });
        });
    },

这个TinyMCE插件似乎是一个解决方案:

https://github.com/mohan/tinymce-placeholder

希望对您有所帮助!

Gaurav的解决方案工作正常,但需要一些更改。我使用此修改使其近乎完美:

editor.on("init", function(){
    tinymce.DOM.addClass( editor.bodyElement, 'content-editor' );
    if ( editor.getContent() === "" ) {
        tinymce.DOM.addClass( editor.bodyElement, 'empty' );
        var pseudoBeforeHeight = window.getComputedStyle(editor.bodyElement, ':before').height;
        tinymce.DOM.setStyles( editor.bodyElement, { 'height': pseudoBeforeHeight } );
    }
});

我通过在元素上添加属性textarea data-mce-placeholder轻松添加了占位符.
data-mce-placeholder在编辑器的iframe中引用body::before文本CSS

<textarea
  ng-model="textContent",
  ng-change="save()",
  style="height: 360px; max-height: 50vh; border: none !important",
  ui-tinymce="tinymceOptions"
  data-mce-placeholder="Input your text here"
></textarea>

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