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design a polymer-element via x-design-host
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| <polymer-element name="x-design-host"> | ||
| <script> | ||
| (function() { | ||
|
|
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| Polymer('x-design-host', { | ||
|
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| name: 'my-element', | ||
|
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| ready: function() { | ||
| this.model = {}; | ||
| this.treeInfo = {name: this.name, id: ''}; | ||
| }, | ||
|
|
||
| dumpTag: function(serializer, indent, tab) { | ||
| var indented = indent + tab, attrs = ''; | ||
| var attrs = this.dumpAttributes(); | ||
| return indent + '<polymer-element' + attrs + '>\n\n' + | ||
| indented + '<template>\n' + | ||
| serializer.dumpChildren(this,indented + tab) + | ||
| indented + '</template>\n\n' + | ||
| indented + '<sc' + 'ript>\n\n' + | ||
| indented + tab + this.dumpScript(indented + tab, tab) + | ||
| indented + '</sc' + 'ript>\n\n' + | ||
| indent + '</polymer-element>'; | ||
| }, | ||
|
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| dumpAttributes: function() { | ||
| var attrs = ''; | ||
| var a$ = this.polymerElement ? this.polymerElement.attributes : | ||
| [{name: 'name', value: this.name}]; | ||
| for (var i=0, a; (a=a$[i]); i++) { | ||
| attrs += ' ' + a.name + '="' + a.value + '"'; | ||
| } | ||
| return attrs; | ||
| }, | ||
|
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| dumpScript: function(indent, tab) { | ||
| var s = 'Polymer(\'' + this.name + '\', {\n' + indent + tab; | ||
| var props = []; | ||
| Object.keys(this.model).forEach(function(k) { | ||
| if (serializeScriptBlacklist.indexOf(k) < 0) { | ||
| props.push(serializePropertyValue(k, this.model)); | ||
| } | ||
| }, this); | ||
| s += props.join(',\n' + indent + tab); | ||
| s += '\n' + indent + '});' + '\n\n'; | ||
| return s; | ||
| }, | ||
|
|
||
| loadHtml: function(html, callback) { | ||
| var raw = document.createElement('div'); | ||
| raw.innerHTML = html; | ||
| // remove imports | ||
| var imports = raw.querySelectorAll('link[rel=import]').array(); | ||
| imports.forEach(function(i) { | ||
| i.remove(); | ||
| }); | ||
| // absorb polymer-element | ||
| this.polymerElement = raw.querySelector('polymer-element'); | ||
| // absorb script | ||
| this.scriptElement = this.polymerElement.querySelector('script'); | ||
| this.model = this.modelFromScript(this.scriptElement); | ||
| // absorb template | ||
| var template = this.polymerElement.querySelector('template'); | ||
| if (template) { | ||
| template.bindingDelegate = this.syntax; | ||
| // make imports go... | ||
| this.loadElementImports(template.content, function() { | ||
| this.appendChild(template.createInstance(this.model)); | ||
| this.meta.ensureMeta(this); | ||
| this.marshalNodeReferences(this); | ||
| this.model.$ = this.$; | ||
| callback && callback(); | ||
| }.bind(this)); | ||
| } else if (callback) { | ||
| callback(); | ||
| } | ||
| }, | ||
|
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| loadElementImports: function(element, callback) { | ||
| var pending = 1; | ||
| var receive = function() { | ||
| pending--; | ||
| checkDone(); | ||
| } | ||
| var checkDone = function() { | ||
| if (pending == 0 && callback) { | ||
| callback(); | ||
| } | ||
| }; | ||
| var n$ = element.querySelectorAll('*'); | ||
| for (var i=0, l=n$.length, n, m; (i<l) && (n=n$[i]); i++) { | ||
| m = this.meta.byId(n.localName); | ||
| if (m && !m.importsLoaded) { | ||
| pending++; | ||
| m.loadImports(receive); | ||
| } | ||
| } | ||
| receive(); | ||
| }, | ||
|
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| modelFromScript: function(script) { | ||
| var p = executePolymerScript(script); | ||
| return p || {}; | ||
| }, | ||
|
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| _getInspectorProps: function() { | ||
| return this.model; | ||
| } | ||
|
|
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| }); | ||
|
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| var serializeScriptBlacklist = ['$']; | ||
|
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| function serializePropertyValue(name, obj) { | ||
| var value = obj[name], type = typeof value; | ||
| switch(type) { | ||
| case 'function': | ||
| value = value.toString(); | ||
| break; | ||
| case 'string': | ||
| value = '\'' + value + '\''; | ||
| break; | ||
| } | ||
| return name + ': ' + value; | ||
| } | ||
|
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||
| // this is not secure, it's just intended to make it harder to accidentally | ||
| // mess up the main document. | ||
| var frame = document.createElement('iframe'); | ||
| frame.style.display = 'none'; | ||
| document.body.appendChild(frame); | ||
| frame.src = ''; | ||
|
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||
| function executePolymerScript(script) { | ||
| if (!frame.contentWindow.Polymer) { | ||
| frame.contentWindow.Polymer = function(name, model) { | ||
| var model = typeof name === 'object' ? name : model; | ||
| frame.contentWindow.model = model; | ||
| } | ||
| } | ||
| try { | ||
| var code = script.textContent.trim(); | ||
| frame.contentWindow.eval(code); | ||
| } catch(e) { | ||
| console.log(e); | ||
| } | ||
| var r = frame.contentWindow.model; | ||
| frame.contentWindow.model = null; | ||
| return r; | ||
| } | ||
|
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| function executeScriptsInScope(scope) { | ||
| // make scripts go.... | ||
| var s$ = scope.querySelectorAll('script:not([src])'); | ||
| for (var i=0, l=s$.length, s; (i<l) && (s=s$[i]); i++) { | ||
| replaceAndExecuteScript(s); | ||
| } | ||
| } | ||
|
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| function replaceAndExecuteScript(script) { | ||
| var newScript = document.createElement('script'); | ||
| script.parentNode.replaceChild(newScript, script); | ||
| newScript.textContent = script.textContent; | ||
| } | ||
|
|
||
| })(); | ||
| </script> | ||
| </polymer-element> |
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