01: // Copyright 2007 The Apache Software Foundation
02: //
03: // Licensed under the Apache License, Version 2.0 (the "License");
04: // you may not use this file except in compliance with the License.
05: // You may obtain a copy of the License at
06: //
07: // http://www.apache.org/licenses/LICENSE-2.0
08: //
09: // Unless required by applicable law or agreed to in writing, software
10: // distributed under the License is distributed on an "AS IS" BASIS,
11: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: // See the License for the specific language governing permissions and
13: // limitations under the License.
14:
15: package org.apache.tapestry.internal.services;
16:
17: import org.apache.tapestry.dom.Document;
18:
19: /**
20: * Responsible for building script links and script blocks into a document.
21: */
22: public interface DocumentScriptBuilder {
23: /** Adds a link to load a script. Scripts will be loaded only once. */
24: void addScriptLink(String scriptURL);
25:
26: /**
27: * Adds JavaScript code. The code is collected into a single block that is injected just before
28: * the close body tag of the page.
29: *
30: * @param script
31: * statement to add to the block (a newline will be appended as well)
32: */
33: void addScript(String script);
34:
35: /**
36: * Updates the supplied Document, locating the html/body element and adding script links (to the
37: * top) and a script block (to the end).
38: *
39: * @param document
40: * to be updated
41: */
42: void updateDocument(Document document);
43: }
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