X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Forg%2Fxwt%2FTemplate.java;h=95846c1ce446f132c2be6b627c1401701191d223;hb=8235361e8601ae7b36ab707058de3b52225d15a2;hp=a9ea9b91502a90352a6c92d33b17de5d7435181e;hpb=e58686eae8a823ed64ed0ec92c2274c41d90ec93;p=org.ibex.core.git
diff --git a/src/org/xwt/Template.java b/src/org/xwt/Template.java
index a9ea9b9..95846c1 100644
--- a/src/org/xwt/Template.java
+++ b/src/org/xwt/Template.java
@@ -1,4 +1,4 @@
-// Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
+// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
package org.xwt;
import java.io.*;
@@ -10,12 +10,7 @@ import org.xwt.util.*;
/**
* Encapsulates a template node (the <template/> element of a
- * .xwt file, or any child element thereof). Each instance of
- * Template has a nodeName -- this is the resource name of
- * the file that the template node occurs in, concatenated with the
- * path from the root element to this node, each step of which is in
- * the form .n for some integer n. Static nodes use the string "._"
- * as a path.
+ * .xwt file, or any child element thereof).
*
* Note that the Template instance corresponding to the
* <template/> node carries all the header information -- hence
@@ -26,27 +21,23 @@ import org.xwt.util.*;
* See the XWT reference for information on the order in which
* templates are applied, attributes are put, and scripts are run.
*/
+
+// FIXME imports
public class Template {
// Instance Members ///////////////////////////////////////////////////////
- /** this instance's nodeName */
- String nodeName;
+ /** the id of this box */
+ String id = null;
/** the id of the redirect target; only meaningful on a root node */
String redirect = null;
/** templates that should be preapplied (in the order of application); only meaningful on a root node */
- private String[] preapply;
-
- /** 'linked' form of preapply -- the String references have been resolved into instance references */
- private Template[] _preapply = null;
+ private Template[] preapply;
/** templates that should be postapplied (in the order of application); only meaningful on a root node */
- private String[] postapply;
-
- /** 'linked' form of postapply -- the String references have been resolved into instance references */
- private Template[] _postapply = null;
+ private Template[] postapply;
/** keys to be "put" to instances of this template; elements correspond to those of vals */
private String[] keys;
@@ -54,29 +45,26 @@ public class Template {
/** values to be "put" to instances of this template; elements correspond to those of keys */
private Object[] vals;
- /** array of strings representing the importlist for this template */
- private String[] importlist;
-
/** child template objects */
private Template[] children;
- /** an array of the names of properties to be preserved when retheming; only meaningful on a root node */
- private String[] preserve = null;
-
- /** the id attribute on this node */
- private String id = "";
-
/** see numUnits(); -1 means that this value has not yet been computed */
private int numunits = -1;
- /** true iff the resolution of this template's preapply/postapply sets changed as a result of the most recent call to retheme() */
- private boolean changed = false;
+ /** the scope in which the static block is executed */
+ private JS.Scope staticScope = null;
/** the script on the static node of this template, null if it has already been executed */
- private JS.Script staticscript = null;
+ private JS.CompiledFunction staticscript = null;
/** the script on this node */
- private JS.Script script = null;
+ private JS.CompiledFunction script = null;
+
+ /** the filename this node came from; used only for debugging */
+ private String fileName = "unknown";
+
+
+ // Only used during parsing /////////////////////////////////////////////////////////////////
/** during XML parsing, this holds the list of currently-parsed children; null otherwise */
private Vec childvect = new Vec();
@@ -93,44 +81,27 @@ public class Template {
/** the line number that this element starts on */
private int startLine = -1;
- // Static data/methods ///////////////////////////////////////////////////////////////////
-
- /** a template cache so that only one Template object is created for each xwt */
- private static Hashtable cache = new Hashtable(1000);
- /** The default importlist; in future revisions this will contain "xwt.*" */
- public static final String[] defaultImportList = new String[] { };
-
- /** returns the appropriate template, resolving and theming as needed */
- public static Template getTemplate(String name, String[] importlist) {
- String resolved = Resources.resolve(name + ".xwt", importlist);
- Template t = resolved == null ? null : (Template)cache.get(resolved.substring(0, resolved.length() - 4));
- if (t != null) return t;
- if (resolved == null) return null;
-
- // note that Templates in xwar's are instantiated as read in via loadStream() --
- // the following code only runs when XWT is reading templates from a filesystem.
- ByteArrayInputStream bais = new ByteArrayInputStream(Resources.getResource(resolved));
- return buildTemplate(bais, resolved.substring(0, resolved.length() - 4));
- }
+ // Static data/methods ///////////////////////////////////////////////////////////////////
- public static Template buildTemplate(InputStream is, String nodeName) {
- return buildTemplate(is, nodeName, new TemplateHelper());
- }
+ private Template(String fileName) { this.fileName = fileName; }
- public static Template buildTemplate(InputStream is, String nodeName, TemplateHelper t) {
+ public static Template getTemplate(Res r) {
try {
- return new Template(is, nodeName, t);
+ if (r.t != null) return r.t;
+ r.t = new Template(r.getDescriptiveName());
+ new TemplateHelper().parseit(r.getInputStream(), r.t);
+ return r.t;
} catch (XML.SchemaException e) {
- if (Log.on) Log.log(Template.class, "error parsing template " + nodeName);
+ if (Log.on) Log.log(Template.class, "error parsing template " + r.t.fileName);
if (Log.on) Log.log(Template.class, e.getMessage());
return null;
} catch (XML.XMLException e) {
- if (Log.on) Log.log(Template.class, "error parsing template at " + nodeName + ":" + e.getLine() + "," + e.getCol());
+ if (Log.on) Log.log(Template.class, "error parsing template at " + r.t.fileName + ":" + e.getLine() + "," + e.getCol());
if (Log.on) Log.log(Template.class, e.getMessage());
return null;
} catch (IOException e) {
- if (Log.on) Log.log(Template.class, "IOException while parsing template " + nodeName + " -- this should never happen");
+ if (Log.on) Log.log(Template.class, "IOException while parsing template " + r.t.fileName + " -- this should never happen");
if (Log.on) Log.log(Template.class, e);
return null;
}
@@ -139,272 +110,77 @@ public class Template {
// Methods to apply templates ////////////////////////////////////////////////////////
- private Template(String nodeName) {
- this.nodeName = nodeName;
- cache.put(nodeName, this);
- }
- private Template(InputStream is, String nodeName, TemplateHelper th) throws XML.XMLException, IOException {
- this(nodeName);
- th.parseit(is, this);
- }
-
- /** calculates, caches, and returns an integer approximation of how long it will take to apply this template, including pre/post and children */
+ /** calculates, caches, and returns an integer approximation of how long it will take to apply this template,
+ * including pre/post and children */
int numUnits() {
- link();
if (numunits != -1) return numunits;
numunits = 1;
- for(int i=0; _preapply != null && i<_preapply.length; i++) if (_preapply[i] != null) numunits += _preapply[i].numUnits();
- for(int i=0; _postapply != null && i<_postapply.length; i++) if (_postapply[i] != null) numunits += _postapply[i].numUnits();
+ for(int i=0; preapply != null && i elements of any
- // of the templates which would be applied in step 7."
- Vec keys = new Vec();
- b.template.gatherPreserves(keys);
- Object[] vals = new Object[keys.size()];
- for(int i=0; i= 0; i--) {
- kids[i] = b.redirect.getChild(i);
- kids[i].remove();
- }
- }
-
- // Ref 7.5.4: "Set the box's redirect target to self"
- b.redirect = b;
-
- // Ref 7.5.5: "Remove all of the box's immediate children"
- for(Box cur = b.getChild(b.numChildren() - 1); cur != null;) {
- Box oldcur = cur;
- cur = cur.prevSibling();
- oldcur.remove();
- }
-
- // Ref 7.5.6: "Remove all traps set by scripts run during the application of any template to this box"
- Trap.removeAllTrapsByBox(b);
-
- // Ref 7.5.7: "Apply the template to the box according to the usual application procedure"
- b.template.apply(b, null, null, null, 0, 1);
-
- // Ref 7.5.8: "Re-add the saved children which were removed in step 3"
- for(int i=0; kids != null && ichange as needed */
- void link() { link(false); }
-
- /** same as link(), except that with a true value, it will force a re-link */
- private void link(boolean force) {
-
- if (staticscript != null) try {
- JS.Scope s = Static.createStatic(nodeName, false);
- if (staticscript != null) {
- JS.Script temp = staticscript;
- staticscript = null;
-
- // we layer a transparent scope over the Static so that we can catch requests for the xwt object
- // yet not screw up paths that include a package called xwt (ie xwt.static.org.xwt.foo)
- JS.Scope varScope = new JS.Scope(s) {
- public boolean isTransparent() { return true; }
- public Object get(Object key) {
- if ("xwt".equals(key)) return XWT.singleton; else return super.get(key);
- } };
-
- JS.Array args = new JS.Array();
- args.addElement(varScope);
- temp.call(args);
- }
- } catch (JS.Exn e) {
- if (Log.on) Log.log(this, "WARNING: uncaught ecmascript exception: " + e.getMessage());
- }
-
- if (!(force || (preapply != null && _preapply == null) || (postapply != null && _postapply == null))) return;
-
- if (preapply != null) {
- if (_preapply == null) _preapply = new Template[preapply.length];
- for(int i=0; i<_preapply.length; i++) {
- Template t = getTemplate(preapply[i], importlist);
- if (t != _preapply[i]) changed = true;
- _preapply[i] = t;
- }
- }
- if (postapply != null) {
- if (_postapply == null) _postapply = new Template[postapply.length];
- for(int i=0; i<_postapply.length; i++) {
- Template t = getTemplate(postapply[i], importlist);
- if (t != _postapply[i]) changed = true;
- _postapply[i] = t;
- }
- }
-
- for(int i=0; children != null && i node must have exactly one attribute, which must be called 'name'");
String importpackage = c.vals[0].toString();
if (importpackage.endsWith(".*")) importpackage = importpackage.substring(0, importpackage.length() - 2);
- importlist.addElement(importpackage);
return;
} else if (c.localName.equals("redirect")) {
@@ -492,6 +261,7 @@ public class Template {
if (t.redirect != null)
throw new XML.SchemaException("the header element may not appear more than once");
t.redirect = c.vals[0].toString();
+ if(t.redirect.equals("null")) t.redirect = null;
return;
} else if (c.localName.equals("preapply")) {
@@ -514,24 +284,11 @@ public class Template {
staticNodeHasBeenEncountered = true;
return;
- } else if (c.localName.equals("preserve")) {
- if (c.len != 1 || !c.keys[0].equals("attributes"))
- throw new XML.SchemaException(" node must have exactly one attribute, which must be called 'attributes'");
- if (t.preserve != null)
- throw new XML.SchemaException(" header element may not appear more than once");
-
- StringTokenizer tok = new StringTokenizer(c.vals[0].toString(), ",", false);
- t.preserve = new String[tok.countTokens()];
- for(int i=0; i 0) preapply.copyInto(t.preapply = new String[preapply.size()]);
- if (postapply.size() > 0) postapply.copyInto(t.postapply = new String[postapply.size()]);
- importlist.setSize(0); preapply.setSize(0); postapply.setSize(0);
+ if (preapply.size() > 0) preapply.copyInto(t.preapply = new Template[preapply.size()]);
+ if (postapply.size() > 0) postapply.copyInto(t.postapply = new Template[postapply.size()]);
templateNodeHasBeenEncountered = true;
} else {
@@ -544,23 +301,28 @@ public class Template {
// push the last node we were in onto the stack
nodeStack.addElement(t);
- // instantiate a new node, and set its nodeName/importlist/preapply
- Template t2 = new Template(t.nodeName + "." + t.childvect.size());
- t2.importlist = t.importlist;
+ // instantiate a new node, and set its fileName/importlist/preapply
+ Template t2 = new Template(t.fileName);
t2.startLine = getLine();
- if (!c.localName.equals("box")) t2.preapply = new String[] { c.localName };
+ if (!c.localName.equals("box")) t2.preapply = new Template[] { /*c.localName FIXME */ };
// make the new node the current node
t = t2;
}
- // TODO: Sort contents straight from one array to another
t.keys = new String[c.len];
t.vals = new Object[c.len];
- System.arraycopy(c.keys, 0, t.keys, 0, c.len);
- System.arraycopy(c.vals, 0, t.vals, 0, c.len);
- quickSortAttributes(0, t.keys.length - 1);
+ Hash h = new Hash(c.len * 2, 3);
+ for(int i=0; i left && t.keys[--j].compareTo(t.keys[right]) > 0);
- if (i >= j) break;
- s = t.keys[i]; t.keys[i] = t.keys[j]; t.keys[j] = s;
- o = t.vals[i]; t.vals[i] = t.vals[j]; t.vals[j] = o;
+ private JS.CompiledFunction genscript(boolean isstatic) {
+ JS.CompiledFunction thisscript = null;
+ try {
+ thisscript = JS.parse(t.fileName + (isstatic ? "._" : ""), t.content_start, new StringReader(t.content.toString()));
+ } catch (IOException ioe) {
+ if (Log.on) Log.log(this, " ERROR: " + ioe.getMessage());
+ thisscript = null;
}
- s = t.keys[right]; t.keys[right] = t.keys[i]; t.keys[i] = s;
- o = t.vals[right]; t.vals[right] = t.vals[i]; t.vals[i] = o;
- return i;
- }
- /** simple quicksort, from http://sourceforge.net/snippet/detail.php?type=snippet&id=100240 */
- private void quickSortAttributes(int left, int right) {
- if (left >= right) return;
- int p = partitionAttributes(left, right);
- quickSortAttributes(left, p - 1);
- quickSortAttributes(p + 1, right);
+ t.content = null;
+ t.content_start = 0;
+ t.content_lines = 0;
+ return thisscript;
}
public void endElement(XML.Element c) throws XML.SchemaException {
if (rootNodeHasBeenEncountered && !templateNodeHasBeenEncountered) {
if ("static".equals(nameOfHeaderNodeBeingProcessed) && t.content != null) t.staticscript = genscript(true);
nameOfHeaderNodeBeingProcessed = null;
-
+
} else if (templateNodeHasBeenEncountered && !templateNodeHasBeenFinished) {
// turn our childvect into a Template[]
t.childvect.copyInto(t.children = new Template[t.childvect.size()]);
@@ -642,7 +393,7 @@ public class Template {
if (nodeStack.size() == 0) {
//
templateNodeHasBeenFinished = true;
-
+
} else {
// add this template as a child of its parent
Template oldt = t;
@@ -650,32 +401,13 @@ public class Template {
nodeStack.setSize(nodeStack.size() - 1);
t.childvect.addElement(oldt);
}
-
- }
- }
-
- private JS.Script genscript(boolean isstatic) {
- JS.Script thisscript = null;
- try {
- thisscript = JS.Script.parse(new StringReader(t.content.toString()), t.nodeName + (isstatic ? "._" : ""), t.content_start);
- } catch (JS.Exn ee) {
- if (Log.on) Log.log(this, " ERROR: " + ee.getMessage());
- thisscript = null;
- } catch (IOException ioe) {
- if (Log.on) Log.log(this, " ERROR: " + ioe.getMessage());
- thisscript = null;
}
-
- t.content = null;
- t.content_start = 0;
- t.content_lines = 0;
- return thisscript;
- }
+ }
public void characters(char[] ch, int start, int length) throws XML.SchemaException {
// invoke the no-tab crusade
for (int i=0; length >i; i++) if (ch[start+i] == '\t') throw new XML.SchemaException(
- t.nodeName+ ":" + getLine() + "," + getCol() + ": tabs are not allowed in XWT files");
+ t.fileName+ ":" + getLine() + "," + getCol() + ": tabs are not allowed in XWT files");
if ("static".equals(nameOfHeaderNodeBeingProcessed) || templateNodeHasBeenEncountered) {
if (t.content == null) {
@@ -696,6 +428,35 @@ public class Template {
}
}
+ private static class PerInstantiationScope extends JS.Scope {
+ Res resourceRoot = null;
+ public PerInstantiationScope(Scope parentScope, Res resourceRoot) {
+ super(parentScope);
+ this.resourceRoot = resourceRoot;
+ }
+ public boolean isTransparent() { return true; }
+ public boolean has(Object key) { return false; }
+ public void declare(String s) { super.declare(s); }
+ public Object get(Object key) {
+ // FIXME: access statics here
+ if (Box.SpecialBoxProperty.specialBoxProperties.get(key) == null &&
+ !super.has(key)) {
+ Object ret = resourceRoot.get(key);
+ if (ret != null) return ret;
+ throw new JS.Exn("must declare " + key + " before using it!");
+ }
+ return super.get(key);
+ }
+ public void put(Object key, Object val) {
+ // FIXME: access statics here
+ if (Box.SpecialBoxProperty.specialBoxProperties.get(key) == null &&
+ !super.has(key)) {
+ throw new JS.Exn("must declare " + key + " before using it!");
+ }
+ super.put(key, val);
+ }
+ }
+
}