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Always update the url bar #19

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Always update the url bar #19

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c1975a5
switch from querystring to hash
mlsteele Nov 16, 2014
94e12dd
always keep url linkable
mlsteele Nov 16, 2014
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22 changes: 18 additions & 4 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -109,6 +109,11 @@ <h3>Examples</h3>
<script type="text/javascript" src="js/syntree.js"></script>
<script type="text/javascript">

function set_url() {
window.location.hash = "i=" +
encodeURIComponent(document.getElementById("i").value);
};

function handler(font_size_update, vert_space_update, hor_space_update) {
try {
// Initialize the various options.
Expand Down Expand Up @@ -148,7 +153,8 @@ <h3>Examples</h3>
var img = go(str, font_size, term_font, nonterm_font, vert_space, hor_space, color, term_lines);
$("#image-goes-here").empty();
$("#image-goes-here").append(img);


set_url();
} catch (err) {
if (debug) {
throw(err);
Expand All @@ -169,13 +175,22 @@ <h3>Examples</h3>
$("#font-style-radio, #term-font-check, #nonterm-font-check").buttonset();
$("#accordion").accordion({collapsible: true, icons: false, autoHeight: false});

// Try to load old-style links from the querystring.
try {
var qs = decodeURIComponent(window.location.search.slice(1));
qs = qs.replace(/^i=/,"");
qs = qs.replace(/\+/g," ");
if (qs == "") throw "";
document.getElementById("i").value = qs;
} catch (err) {}

// Try to load tree from hash.
try {
var qs = decodeURIComponent(window.location.hash);
qs = qs.replace(/^#i=/,"");
if (qs == "") throw "";
document.getElementById("i").value = qs;
} catch (err) {}

handler();

Expand All @@ -189,8 +204,7 @@ <h3>Examples</h3>
var loc = window.location.href;
loc = loc.replace(window.location.search, "");

window.prompt ("Link for this tree:", loc + "?i=" +
encodeURIComponent(document.getElementById("i").value));
window.prompt ("Link for this tree:", window.location.href);
return false;
});
$("#font-size-slider").bind("slide", function (event, ui) {
Expand All @@ -206,4 +220,4 @@ <h3>Examples</h3>
</script>

</body>
</html>
</html>