EditArea是一个支持语法高亮的文本编辑器，同类软件还有Ace, CodeMirror等。具体功能方面的差异，请访问http://en.wikipedia.org/wiki/Comparison_of_JavaScript-based_source_code_editors。
项目中用到ExtJS 4.2和EditArea，由于找不到EditArea插件，因此自己实现了一个，经测试基本可用。实现过程仿照已有插件，比较简单，不再啰嗦。
Ext.define('Ext.ux.form.EditTextArea', {
extend: 'Ext.form.TextArea',
alias: 'widget.editarea',
initComponent: function() {
var me = this;
this.eaid = this.id;
me.callParent(arguments);
editAreaLoader.init({
id: this.eaid,
start_highlight: this.initialConfig.start_highlight || true,
language: this.initialConfig.language|| 'en',
syntax: this.initialConfig.syntax,
syntax_selection_allow: "css,html,js,php,python,vb,xml,c,cpp,sql,basic,pas,brain",
allow_toggle: this.initialConfig.allow_toggle || true,
allow_resize: this.initialConfig.allow_resize || false,
replace_tab_by_spaces: this.initialConfig.replace_tab_by_spaces || 4,
toolbar: this.initialConfig.toolbar || "search, go_to_line, |, undo, redo, |, select_font,|, change_smooth_selection, highlight, reset_highlight, |, help",
is_editable: this.initialConfig.is_editable || true,
show_line_colors: true,
//plugins: "autocomplite",
autocompletion:true
});
},
afterRender: function() {
this.callParent();
},
getValue:function(){
var v = editAreaLoader.getValue(this.eaid);
return v;
},
setValue: function(value) {
editAreaLoader.setValue(this.eaid, value);
},
onDestroy: function() {
editAreaLoader.delete_instance(this.eaid);
this.callParent();
}
});