Revision: 4096
http://vexi.svn.sourceforge.net/vexi/?rev=4096&view=rev
Author: clrg
Date: 2011-03-28 17:40:04 +0000 (Mon, 28 Mar 2011)
Log Message:
-----------
Add org.vexi.lib.util and move redirect there TODO clean up rest of vexi.util
Modified Paths:
--------------
trunk/org.vexi-vexi.widgets/src_main/vexi/util/redirect.t
Added Paths:
-----------
trunk/org.vexi-vexi.widgets/src_main/org/vexi/lib/util/
trunk/org.vexi-vexi.widgets/src_main/org/vexi/lib/util/redirect.t
Copied: trunk/org.vexi-vexi.widgets/src_main/org/vexi/lib/util/redirect.t (from
rev 4057, trunk/org.vexi-vexi.widgets/src_main/vexi/util/redirect.t)
===================================================================
--- trunk/org.vexi-vexi.widgets/src_main/org/vexi/lib/util/redirect.t
(rev 0)
+++ trunk/org.vexi-vexi.widgets/src_main/org/vexi/lib/util/redirect.t
2011-03-28 17:40:04 UTC (rev 4096)
@@ -0,0 +1,157 @@
+<!-- Copyright 2009 - see COPYING for details [LGPL] -->
+
+<vexi xmlns:ui="vexi://ui" xmlns:meta="vexi://meta">
+ <meta:doc>
+ <author>Charles Goodwin</author>
+ </meta:doc>
+
+ var reportCollision = function(p, m) {
+ if (vexi.debug) {
+ vexi.trace(new vexi.js.Exception(m));
+ }
+ }
+
+ /** write function for the main box of a full redirect */
+ var mainWrite = function(v) {
+ if (!trapee.redirect_lockfrom[trapname]) {
+ trapee.redirect_lock[trapname] = true;
+ trapee.redirect_to[trapname][trapname] = v;
+ trapee.redirect_lock[trapname] = null;
+ }
+ return true;
+ }
+
+ /** read function for the main box of a full redirect */
+ var mainRead = function() {
+ return trapee.redirect_to[trapname][trapname];
+ }
+
+ /** write function for the target box of a full redirect */
+ var targWrite = function(v) {
+ cascade = v;
+ var from = trapee.redirect_from[trapname];
+ if (!from.redirect_lock[trapname]) {
+ from.redirect_lockfrom[trapname] = true;
+ try {
+ from[trapname] = v;
+ } finally {
+ from.redirect_lockfrom[trapname] = null;
+ }
+ }
+ }
+
+ /** add a redirect from b1[p] to b2[p] and return 'funcs' function list
for later removal */
+ static.add = function(b1, b2, p) {
+ // create box reference from b1 to b2
+ if (b1.redirect_to and b1.redirect_to[p]) {
+ reportCollision(p, "Redirected property '"+p+"' more than once
from a particular box");
+ static.drop(b1, p);
+ }
+ if (!b1.redirect_to) {
+ b1.redirect_to = {};
+ }
+ b1.redirect_to[p] = b2;
+
+ // hash for locking property redirects
+ if (!b1.redirect_lock) {
+ b1.redirect_lock = {};
+ b1.redirect_lockfrom = {};
+ }
+
+ // create box reference from b2 to b1
+ if (b2.redirect_from and b2.redirect_from[p]) {
+ reportCollision(p, "Redirected property '"+p+"' to same
destination box more than once");
+ static.drop(b2.redirect_from[p], p);
+ }
+ if (!b2.redirect_from) {
+ b2.redirect_from = {};
+ }
+ b2.redirect_from[p] = b1;
+
+ // wrap in try/catch clauses in case target properties don't allow
trapping
+ try {
+ b1[p] ++= mainWrite;
+ // b1[p] already redirected to - ensure targWrite happens first
+ if (b1.redirect_from and b1.redirect_from[p]) {
+ b1[p] --= targWrite;
+ b1[p] ++= targWrite;
+ }
+ b1[p] ++= mainRead;
+ b2[p] ++= targWrite;
+ // clean up in the event of failure
+ } catch(e) {
+ var m = "Redirect failed on property '"+p+"' with error:
"+e.message;
+ if (vexi.debug) {
+ throw m;
+ } else {
+ vexi.log.warn(m);
+ }
+ b1[p] --= mainWrite;
+ b1[p] --= mainRead;
+ b2[p] --= targWrite;
+ }
+ }
+
+ /** drop set of redirect functions 'funcs' from 'b[p]' */
+ static.drop = function(b1, p) {
+ var b2 = b1.redirect_to[p];
+ // remove any traps
+ b1[p] --= mainWrite;
+ b1[p] --= mainRead;
+ b2[p] --= targWrite;
+
+ // clean up references for b1
+ b1.redirect_to[p] = null;
+ var count = 0;
+ for (var key in b1.redirect_to) {
+ count++;
+ break;
+ }
+ if (count == 0) {
+ b1.redirect_to = null;
+ b1.redirect_lock = null;
+ }
+
+ // clean up references for b2
+ b2.redirect_from[p] = null;
+ count = 0;
+ for (var key in b2.redirect_from) {
+ count++;
+ break;
+ }
+ if (count == 0) {
+ b2.redirect_from = null;
+ }
+ }
+
+ /** add redirects 'arguments[2+]' from a to b */
+ static.addRedirect = function(a, b) {
+ if (a == null) {
+ throw "Tried to redirect from a null box or object";
+ }
+ if (b == null) {
+ throw "Tried to redirect to a null box or object";
+ }
+ if (a == b) {
+ throw "Redirects must be between two different boxes";
+ }
+ for (var i=2; arguments.length>i; i++) {
+ static.add(a, b, arguments[i]);
+ }
+ }
+
+ /** delete redirects 'arguments[1+]' from box v */
+ static.delRedirect = function(v) {
+ for (var i=1; arguments.length>i; i++) {
+ static.drop(v, arguments[i]);
+ }
+ }
+
+ <ui:box>
+
+ // assign functions
+ thisbox.addRedirect = static.addRedirect;
+ thisbox.delRedirect = static.delRedirect;
+
+ </ui:box>
+</vexi>
Modified: trunk/org.vexi-vexi.widgets/src_main/vexi/util/redirect.t
===================================================================
--- trunk/org.vexi-vexi.widgets/src_main/vexi/util/redirect.t 2011-03-28
17:39:12 UTC (rev 4095)
+++ trunk/org.vexi-vexi.widgets/src_main/vexi/util/redirect.t 2011-03-28
17:40:04 UTC (rev 4096)
@@ -1,157 +1,21 @@
-<!-- Copyright 2009 - see COPYING for details [LGPL] -->
+<!-- Copyright 2011 - see COPYING for details [LGPL] -->
-<vexi xmlns:ui="vexi://ui" xmlns:meta="vexi://meta">
+<vexi xmlns:meta="vexi://meta" xmlns="org.vexi.lib.util">
<meta:doc>
<author>Charles Goodwin</author>
+ <about>
+ Redirect puts and reads on box properties
+ </about>
+ <usage>
+ Preapply or access from static:
+ - addRedirect(boxA, boxB, "prop1", "prop2",... "propn");
+ - delRedirect(boxA, "prop1", "propn");
+ </usage>
</meta:doc>
- var reportCollision = function(p, m) {
- if (vexi.debug) {
- vexi.trace(new vexi.js.Exception(m));
- }
- }
+ <redirect />
- /** write function for the main box of a full redirect */
- var mainWrite = function(v) {
- if (!trapee.redirect_lockfrom[trapname]) {
- trapee.redirect_lock[trapname] = true;
- trapee.redirect_to[trapname][trapname] = v;
- trapee.redirect_lock[trapname] = null;
- }
- return true;
- }
+ static.addRedirect = .redirect..addRedirect;
+ static.delRedirect = .redirect..delRedirect;
- /** read function for the main box of a full redirect */
- var mainRead = function() {
- return trapee.redirect_to[trapname][trapname];
- }
-
- /** write function for the target box of a full redirect */
- var targWrite = function(v) {
- cascade = v;
- var from = trapee.redirect_from[trapname];
- if (!from.redirect_lock[trapname]) {
- from.redirect_lockfrom[trapname] = true;
- try {
- from[trapname] = v;
- } finally {
- from.redirect_lockfrom[trapname] = null;
- }
- }
- }
-
- /** add a redirect from b1[p] to b2[p] and return 'funcs' function list
for later removal */
- static.add = function(b1, b2, p) {
- // create box reference from b1 to b2
- if (b1.redirect_to and b1.redirect_to[p]) {
- reportCollision(p, "Redirected property '"+p+"' more than once
from a particular box");
- static.drop(b1, p);
- }
- if (!b1.redirect_to) {
- b1.redirect_to = {};
- }
- b1.redirect_to[p] = b2;
-
- // hash for locking property redirects
- if (!b1.redirect_lock) {
- b1.redirect_lock = {};
- b1.redirect_lockfrom = {};
- }
-
- // create box reference from b2 to b1
- if (b2.redirect_from and b2.redirect_from[p]) {
- reportCollision(p, "Redirected property '"+p+"' to same
destination box more than once");
- static.drop(b2.redirect_from[p], p);
- }
- if (!b2.redirect_from) {
- b2.redirect_from = {};
- }
- b2.redirect_from[p] = b1;
-
- // wrap in try/catch clauses in case target properties don't allow
trapping
- try {
- b1[p] ++= mainWrite;
- // b1[p] already redirected to - ensure targWrite happens first
- if (b1.redirect_from and b1.redirect_from[p]) {
- b1[p] --= targWrite;
- b1[p] ++= targWrite;
- }
- b1[p] ++= mainRead;
- b2[p] ++= targWrite;
- // clean up in the event of failure
- } catch(e) {
- var m = "Redirect failed on property '"+p+"' with error:
"+e.message;
- if (vexi.debug) {
- throw m;
- } else {
- vexi.log.warn(m);
- }
- b1[p] --= mainWrite;
- b1[p] --= mainRead;
- b2[p] --= targWrite;
- }
- }
-
- /** drop set of redirect functions 'funcs' from 'b[p]' */
- static.drop = function(b1, p) {
- var b2 = b1.redirect_to[p];
- // remove any traps
- b1[p] --= mainWrite;
- b1[p] --= mainRead;
- b2[p] --= targWrite;
-
- // clean up references for b1
- b1.redirect_to[p] = null;
- var count = 0;
- for (var key in b1.redirect_to) {
- count++;
- break;
- }
- if (count == 0) {
- b1.redirect_to = null;
- b1.redirect_lock = null;
- }
-
- // clean up references for b2
- b2.redirect_from[p] = null;
- count = 0;
- for (var key in b2.redirect_from) {
- count++;
- break;
- }
- if (count == 0) {
- b2.redirect_from = null;
- }
- }
-
- /** add redirects 'arguments[2+]' from a to b */
- static.addRedirect = function(a, b) {
- if (a == null) {
- throw "Tried to redirect from a null box or object";
- }
- if (b == null) {
- throw "Tried to redirect to a null box or object";
- }
- if (a == b) {
- throw "Redirects must be between two different boxes";
- }
- for (var i=2; arguments.length>i; i++) {
- static.add(a, b, arguments[i]);
- }
- }
-
- /** delete redirects 'arguments[1+]' from box v */
- static.delRedirect = function(v) {
- for (var i=1; arguments.length>i; i++) {
- static.drop(v, arguments[i]);
- }
- }
-
- <ui:box>
-
- // assign functions
- thisbox.addRedirect = static.addRedirect;
- thisbox.delRedirect = static.delRedirect;
-
- </ui:box>
</vexi>
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