##// END OF EJS Templates
Prevent qtconsole frontend freeze on lots of output....
Prevent qtconsole frontend freeze on lots of output. The output from the kernel is now clipped to last `buffer_size` before displaying and a timer is used to flush the pending output text instead of attempting to display text on every stream output from kernel. The timer interval is adjusted based on actual time taken to append a screenful of text to widget. This throttles the widget repaints and avoids choking the Qt event loop leaving time to handle other Qt events. Test cases: In [1]: for i in xrange(1000000): print i In [2]: range(100000) Without this commit the first input causes the qtconsole frontend to freeze, not responding to `Ctrl+C`.

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pager.js
175 lines | 6.1 KiB | application/javascript | JavascriptLexer
//----------------------------------------------------------------------------
// Copyright (C) 2008-2011 The IPython Development Team
//
// Distributed under the terms of the BSD License. The full license is in
// the file COPYING, distributed as part of this software.
//----------------------------------------------------------------------------
//============================================================================
// Pager
//============================================================================
var IPython = (function (IPython) {
var utils = IPython.utils;
var Pager = function (pager_selector, pager_splitter_selector) {
this.pager_element = $(pager_selector);
this.pager_button_area = $('#pager_button_area');
var that = this;
this.percentage_height = 0.40;
this.pager_splitter_element = $(pager_splitter_selector)
.draggable({
containment: 'window',
axis:'y',
helper: null ,
drag: function(event, ui) {
// recalculate the amount of space the pager should take
var pheight = ($(document.body).height()-event.clientY-4);
var downprct = pheight/IPython.layout_manager.app_height();
downprct = Math.min(0.9, downprct);
if (downprct < 0.1) {
that.percentage_height = 0.1;
that.collapse({'duration':0});
} else if (downprct > 0.2) {
that.percentage_height = downprct;
that.expand({'duration':0});
}
IPython.layout_manager.do_resize();
}
});
this.expanded = false;
this.style();
this.create_button_area();
this.bind_events();
};
Pager.prototype.create_button_area = function(){
var that = this;
this.pager_button_area.append(
$('<a>').attr('role', "button")
.attr('title',"Open the pager in an external window")
.addClass('ui-button')
.click(function(){that.detach()})
.attr('style','position: absolute; right: 20px;')
.append(
$('<span>').addClass("ui-icon ui-icon-extlink")
)
)
this.pager_button_area.append(
$('<a>').attr('role', "button")
.attr('title',"Close the pager")
.addClass('ui-button')
.click(function(){that.collapse()})
.attr('style','position: absolute; right: 5px;')
.append(
$('<span>').addClass("ui-icon ui-icon-close")
)
)
};
Pager.prototype.style = function () {
this.pager_splitter_element.addClass('border-box-sizing ui-widget ui-state-default');
this.pager_element.addClass('border-box-sizing');
this.pager_element.find(".container").addClass('border-box-sizing');
this.pager_splitter_element.attr('title', 'Click to Show/Hide pager area, drag to Resize');
};
Pager.prototype.bind_events = function () {
var that = this;
this.pager_element.bind('collapse_pager', function (event, extrap) {
var time = (extrap != undefined) ? ((extrap.duration != undefined ) ? extrap.duration : 'fast') : 'fast';
that.pager_element.hide(time);
});
this.pager_element.bind('expand_pager', function (event, extrap) {
var time = (extrap != undefined) ? ((extrap.duration != undefined ) ? extrap.duration : 'fast') : 'fast';
that.pager_element.show(time);
});
this.pager_splitter_element.hover(
function () {
that.pager_splitter_element.addClass('ui-state-hover');
},
function () {
that.pager_splitter_element.removeClass('ui-state-hover');
}
);
this.pager_splitter_element.click(function () {
that.toggle();
});
$([IPython.events]).on('open_with_text.Pager', function (event, data) {
if (data.text.trim() !== '') {
that.clear();
that.expand();
that.append_text(data.text);
};
});
};
Pager.prototype.collapse = function (extrap) {
if (this.expanded === true) {
this.expanded = false;
this.pager_element.add($('div#notebook')).trigger('collapse_pager', extrap);
};
};
Pager.prototype.expand = function (extrap) {
if (this.expanded !== true) {
this.expanded = true;
this.pager_element.add($('div#notebook')).trigger('expand_pager', extrap);
};
};
Pager.prototype.toggle = function () {
if (this.expanded === true) {
this.collapse();
} else {
this.expand();
};
};
Pager.prototype.clear = function (text) {
this.pager_element.find(".container").empty();
};
Pager.prototype.detach = function(){
var w = window.open("","_blank")
$(w.document.head)
.append(
$('<link>')
.attr('rel',"stylesheet")
.attr('href',"/static/css/notebook.css")
.attr('type',"text/css")
)
.append(
$('<title>').text("IPython Pager")
);
var pager_body = $(w.document.body)
pager_body.attr('style','overflow:scroll');
pager_body.append(this.pager_element.children())
w.document.close();
this.collapse();
}
Pager.prototype.append_text = function (text) {
this.pager_element.find(".container").append($('<pre/>').html(utils.fixCarriageReturn(utils.fixConsole(text))));
};
IPython.Pager = Pager;
return IPython;
}(IPython));