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Disable Fast Preview for version 2.5.

Browse Source 
Except for the Discussion Tab.
TNL-3693, TNL-3365
This commit is contained in:
cahrens
2015-10-27 10:59:11 -04:00
parent c032fefc74
commit deb4e35f92
9 changed files with 69 additions and 28 deletions
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24
common/static/js/capa/spec/formula_equation_preview_spec.js
View File

@@ -235,8 +235,7 @@ describe("Formula Equation Preview", function () {
// Refresh the MathJax.
expect(MathJax.Hub.Queue).toHaveBeenCalledWith(
['Text', this.jax, 'THE_FORMULA'],
['Reprocess', this.jax]
['Text', this.jax, 'THE_FORMULA']
);
});
});
@@ -302,8 +301,7 @@ describe("Formula Equation Preview", function () {
runs(function () {
// Refresh the MathJax.
expect(MathJax.Hub.Queue).toHaveBeenCalledWith(
['Text', this.jax, '\\text{OOPSIE}'],
['Reprocess', this.jax]
['Text', this.jax, '\\text{OOPSIE}']
);
expect($img.css('visibility')).toEqual('hidden');
});
@@ -349,17 +347,15 @@ describe("Formula Equation Preview", function () {
this.callbacks[0](this.responses[0]);
expect(MathJax.Hub.Queue).toHaveBeenCalledWith(
['Text', this.jax, 'THE_FORMULA_0'],
['Reprocess', this.jax]
['Text', this.jax, 'THE_FORMULA_0']
);
expect($img.css('visibility')).toEqual('visible');
this.callbacks[1](this.responses[1]);
expect(MathJax.Hub.Queue).toHaveBeenCalledWith(
['Text', this.jax, 'THE_FORMULA_1'],
['Reprocess', this.jax]
['Text', this.jax, 'THE_FORMULA_1']
);
expect($img.css('visibility')).toEqual('hidden')
expect($img.css('visibility')).toEqual('hidden');
});
it("doesn't display outdated information", function () {
@@ -370,15 +366,14 @@ describe("Formula Equation Preview", function () {
// Switch the order (1 returns before 0)
this.callbacks[1](this.responses[1]);
expect(MathJax.Hub.Queue).toHaveBeenCalledWith(
['Text', this.jax, 'THE_FORMULA_1'],
['Reprocess', this.jax]
['Text', this.jax, 'THE_FORMULA_1']
);
expect($img.css('visibility')).toEqual('hidden')
expect($img.css('visibility')).toEqual('hidden');
MathJax.Hub.Queue.reset();
this.callbacks[0](this.responses[0]);
expect(MathJax.Hub.Queue).not.toHaveBeenCalled();
expect($img.css('visibility')).toEqual('hidden')
expect($img.css('visibility')).toEqual('hidden');
});
it("doesn't show an error if the responses are close together",
@@ -392,8 +387,7 @@ describe("Formula Equation Preview", function () {
this.callbacks[1](this.responses[1]);
expect(MathJax.Hub.Queue).toHaveBeenCalledWith(
['Text', this.jax, 'THE_FORMULA_1'],
['Reprocess', this.jax]
['Text', this.jax, 'THE_FORMULA_1']
);
// Make sure that it doesn't indeed show up later

3
common/static/js/capa/src/formula_equation_preview.js
View File

@@ -139,8 +139,7 @@ formulaEquationPreview.enable = function () {
if (inputData.jax) {
// Set the text as the latex code, and then update the MathJax.
MathJax.Hub.Queue(
['Text', inputData.jax, latex],
['Reprocess', inputData.jax]
['Text', inputData.jax, latex]
);
} else if (latex) {
console.log("[FormulaEquationInput] Oops no mathjax for ", latex);

36
common/templates/mathjax_include.html
View File

@@ -1,11 +1,28 @@
## mako
## File: templates/mathjax_include.html
##
## Advanced mathjax using 2.0-latest CDN for Dynamic Math
##
## This enables ASCIIMathJAX, and is used by js_textbox
## Note that this file is only used by LMS.
## MathJax configuration for Studio lives in
## cms/js/require-config.js.
<%page args="disable_fast_preview=True"/>
%if disable_fast_preview:
// Fast Preview was introduced in 2.5. However, it
// causes undesirable flashing/font size changes when
// MathJax is used for interactive preview (equation editor).
// Setting processSectionDelay to 0 (see below) fully eliminates
// fast preview, but to reduce confusion, we are also setting
// the option as displayed in the context menu to false.
// When upgrading to 2.6, check if this variable name changed.
<script type="text/javascript">
window.MathJax = {
menuSettings: {CHTMLpreview: false}
};
</script>
%endif
%if mathjax_mode is not Undefined and mathjax_mode == 'wiki':
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
@@ -30,7 +47,16 @@
</script>
%endif
<script type="text/x-mathjax-config">
window.HUB = MathJax.Hub;
%if disable_fast_preview:
// In order to eliminate all flashing during interactive
// preview, it is necessary to set processSectionDelay to 0
// (remove delay between input and output phases). This
// effectively disables fast preview, regardless of
// the fast preview setting as shown in the context menu.
MathJax.Hub.processSectionDelay = 0;
%endif
MathJax.Hub.signal.Interest(function(message) {
if(message[0] === "End Math") {
set_mathjax_display_div_settings();
@@ -50,4 +76,4 @@
<!-- This must appear after all mathjax-config blocks, so it is after the imports from the other templates.
It can't be run through static.url because MathJax uses crazy url introspection to do lazy loading of
MathJax extension libraries -->
<script type="text/javascript" src="https://cdn.mathjax.org/mathjax/2.4-latest/MathJax.js?config=TeX-MML-AM_HTMLorMML-full"></script>
<script type="text/javascript" src="https://cdn.mathjax.org/mathjax/2.5-latest/MathJax.js?config=TeX-MML-AM_HTMLorMML-full"></script>