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/**
 * ==VimperatorPlugin==
 * @name           copy.js
 * @description    enable to copy strings from a template (like CopyURL+)
 * @description-ja テンプレートから文字列のコピーを可能にします(CopyURL+みたなもの)
 * @minVersion     0.6pre
 * @author         teramako teramako@gmail.com
 * @version        0.3
 * ==/VimperatorPlugin==
 *
 * Usage:
 * :copy {copyString}         -> copy the argument replaced some certain string
 * :copy! {expr}              -> evaluate the argument and copy the result
 *
 * ex)
 * :copy %TITLE%              -> copied the title of the current page
 * :copy title                -> same as `:copy %TITLE%' by default
 * :copy! liberator.version   -> copy the value of liberator.version
 *
 * If non-argument, used `default'
 *
 * Change the value by `set' command. (only the current session)
 * :set copy_{label}=....
 *  or
 * :set {label}=...
 *
 * label: template name which is command argument
 * copy:  copy string
 *    the certian string is replace to ...
 *        %TITTLE%  -> to the title of the current page
 *        %URL%     -> to the URL of the current page
 *        %SEL%     -> to the string of selection
 *        %HTMLSEL% -> to the html string of selection
 *
 * The copy_templates is a string variable which can set on
 * vimperatorrc as following.
 *
 * let copy_templates = "[ {label:'titleAndURL', value:'%TITLE%\n%URL%'}, {label:'title', value:'%TITLE%'} ]"
 *
 * or your can set it using inline JavaScript.
 *
 * javascript <<EOM
 * liberator.globalVariables.copy_templates = uneval([
 *   { label: 'titleAndURL',    value: '%TITLE%\n%URL%' },
 *   { label: 'title',          value: '%TITLE%' },
 *   { label: 'anchor',         value: '<a href="%URL%">%TITLE%</a>' },
 *   { label: 'selanchor',      value: '<a href="%URL%" title="%TITLE%">%SEL%</a>' },
 *   { label: 'htmlblockquote', value: '<blockquote cite="%URL%" title="%TITLE%">%HTMLSEL%</blockquote>' },
 * ]);
 * EOM
 */
(function(){
if (!liberator.globalVariables.copy_templates) {
    liberator.globalVariables.copy_templates = [
        { label: 'titleAndURL',    value: '%TITLE%\n%URL%' },
        { label: 'title',          value: '%TITLE%' },
        { label: 'anchor',         value: '<a href="%URL%">%TITLE%</a>' },
        { label: 'selanchor',      value: '<a href="%URL%" title="%TITLE%">%SEL%</a>' },
        { label: 'htmlblockquote', value: '<blockquote cite="%URL%" title="%TITLE%">%HTMLSEL%</blockquote>' }
    ];
}
// used when argument is none
//const defaultValue = templates[0].label;
liberator.commands.addUserCommand(['copy'],'Copy to clipboard',
	function(arg, special){
		var copyString = '';
		var isError = false;
		if (special && arg){
			try {
				copyString = window.eval('with(liberator){' + arg + '}');
				switch (typeof copyString){
					case 'object':
						copyString = copyString === null ? 'null' : copyString.toSource();
						break;
					case 'function':
						copyString = copyString.toString();
						break;
					case 'number':
					case 'boolean':
						copyString = '' + copyString;
						break;
					case 'undefined':
						copyString = 'undefined';
						break;
				}
			} catch(e){
				isError = true;
				copyString = e.toString();
			}
		} else {
			if (!arg){ arg = liberator.globalVariables.copy_templates[0].label; }
			var str = getCopyTemplate(arg) || arg;
			copyString = replaceVariable(str);
		}
		liberator.copyToClipboard(copyString);
		if (isError){
			liberator.echoerr('CopiedErrorString: `' + copyString + "'");
		} else {
			liberator.echo('CopiedString: `' + liberator.util.escapeHTML(copyString) + "'");
		}
	},{
		completer: function(filter, special){
			if (special){
				return liberator.completion.javascript(filter);
			}
			var templates = liberator.globalVariables.copy_templates.map(function(template){
				return [template.label, template.value];
			});
			if (!filter){ return [0,templates]; }
			var candidates = [];
			templates.forEach(function(template){
				if (template[0].toLowerCase().indexOf(filter.toLowerCase()) == 0){
					candidates.push(template);
				}
			});
			return [0, candidates];
		}
	}
);
function getCopyTemplate(label){
	for each(var template in liberator.globalVariables.copy_templates){
		if ( template.label == label ){
			return template.value;
		}
	}
	return null;
}
function replaceVariable(str){
	if (!str) return;
	var win = new XPCNativeWrapper(window.content.window);
	var sel = '',htmlsel = '';
	if (str.indexOf('%SEL%') >= 0 || str.indexOf('%HTMLSEL%') >= 0){
		sel = win.getSelection().getRangeAt(0);
	}
	if (str.indexOf('%HTMLSEL%') >= 0){
		var serializer = new XMLSerializer();
		htmlsel = serializer.serializeToString(sel.cloneContents());
	}
	return str.replace(/%TITLE%/g,liberator.buffer.title)
	          .replace(/%URL%/g,liberator.buffer.URL)
	          .replace(/%SEL%/g,sel.toString())
	          .replace(/%HTMLSEL%/g,htmlsel);
}

})();

// vim: set fdm=marker sw=4 ts=4 et: