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node-red/editor/js/ui/tabs.js

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/**
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* Copyright 2013, 2016 IBM Corp.
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*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
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RED.tabs = (function() {
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function createTabs(options) {
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var tabs = {};
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var currentTabWidth;
var currentActiveTabWidth = 0;
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var ul = $("#"+options.id);
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ul.addClass("red-ui-tabs");
ul.children().first().addClass("active");
ul.children().addClass("red-ui-tab");
function onTabClick() {
activateTab($(this));
return false;
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}
function onTabDblClick() {
if (options.ondblclick) {
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options.ondblclick(tabs[$(this).attr('href').slice(1)]);
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}
return false;
}
function activateTab(link) {
if (typeof link === "string") {
link = ul.find("a[href='#"+link+"']");
}
if (!link.parent().hasClass("active")) {
ul.children().removeClass("active");
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ul.children().css({"transition": "width 100ms"});
link.parent().addClass("active");
if (options.onchange) {
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options.onchange(tabs[link.attr('href').slice(1)]);
}
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updateTabWidths();
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setTimeout(function() {
ul.children().css({"transition": ""});
},100);
}
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}
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function updateTabWidths() {
var tabs = ul.find("li.red-ui-tab");
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var width = ul.width();
var tabCount = tabs.size();
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var tabWidth = (width-12-(tabCount*6))/tabCount;
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currentTabWidth = 100*tabWidth/width;
currentActiveTabWidth = currentTabWidth+"%";
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if (options.hasOwnProperty("minimumActiveTabWidth")) {
if (tabWidth < options.minimumActiveTabWidth) {
tabCount -= 1;
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tabWidth = (width-12-options.minimumActiveTabWidth-(tabCount*6))/tabCount;
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currentTabWidth = 100*tabWidth/width;
currentActiveTabWidth = options.minimumActiveTabWidth+"px";
} else {
currentActiveTabWidth = 0;
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}
}
tabs.css({width:currentTabWidth+"%"});
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if (tabWidth < 50) {
ul.find(".red-ui-tab-close").hide();
ul.find(".red-ui-tab-icon").hide();
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} else {
ul.find(".red-ui-tab-close").show();
ul.find(".red-ui-tab-icon").show();
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}
if (currentActiveTabWidth !== 0) {
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ul.find("li.red-ui-tab.active").css({"width":options.minimumActiveTabWidth});
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ul.find("li.red-ui-tab.active .red-ui-tab-close").show();
ul.find("li.red-ui-tab.active .red-ui-tab-icon").show();
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}
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}
ul.find("li.red-ui-tab a").on("click",onTabClick).on("dblclick",onTabDblClick);
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updateTabWidths();
function removeTab(id) {
var li = ul.find("a[href='#"+id+"']").parent();
if (li.hasClass("active")) {
var tab = li.prev();
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if (tab.size() === 0) {
tab = li.next();
}
activateTab(tab.find("a"));
}
li.remove();
if (options.onremove) {
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options.onremove(tabs[id]);
}
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delete tabs[id];
updateTabWidths();
}
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return {
addTab: function(tab) {
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tabs[tab.id] = tab;
var li = $("<li/>",{class:"red-ui-tab"}).appendTo(ul);
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li.data("tabId",tab.id);
var link = $("<a/>",{href:"#"+tab.id, class:"red-ui-tab-label"}).appendTo(li);
if (tab.icon) {
$('<img src="'+tab.icon+'" class="red-ui-tab-icon"/>').appendTo(link);
}
$('<span/>').text(tab.label).appendTo(link);
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link.on("click",onTabClick);
link.on("dblclick",onTabDblClick);
if (tab.closeable) {
var closeLink = $("<a/>",{href:"#",class:"red-ui-tab-close"}).appendTo(li);
closeLink.append('<i class="fa fa-times" />');
closeLink.on("click",function(event) {
removeTab(tab.id);
});
}
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updateTabWidths();
if (options.onadd) {
options.onadd(tab);
}
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link.attr("title",tab.label);
if (ul.find("li.red-ui-tab").size() == 1) {
activateTab(link);
}
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if (options.onreorder) {
var originalTabOrder;
var tabDragIndex;
var tabElements = [];
var startDragIndex;
li.draggable({
axis:"x",
distance: 20,
start: function(event,ui) {
originalTabOrder = [];
tabElements = [];
ul.children().each(function(i) {
tabElements[i] = {
el:$(this),
text: $(this).text(),
left: $(this).position().left,
width: $(this).width()
};
if ($(this).is(li)) {
tabDragIndex = i;
startDragIndex = i;
}
originalTabOrder.push($(this).data("tabId"));
});
ul.children().each(function(i) {
if (i!==tabDragIndex) {
$(this).css({
position: 'absolute',
left: tabElements[i].left+"px",
width: tabElements[i].width+2,
transition: "left 0.3s"
});
}
})
if (!li.hasClass('active')) {
li.css({'zIndex':1});
}
},
drag: function(event,ui) {
ui.position.left += tabElements[tabDragIndex].left;
var tabCenter = ui.position.left + tabElements[tabDragIndex].width/2;
for (var i=0;i<tabElements.length;i++) {
if (i === tabDragIndex) {
continue;
}
if (tabCenter > tabElements[i].left && tabCenter < tabElements[i].left+tabElements[i].width) {
if (i < tabDragIndex) {
tabElements[i].left += tabElements[tabDragIndex].width+8;
tabElements[tabDragIndex].el.detach().insertBefore(tabElements[i].el);
} else {
tabElements[i].left -= tabElements[tabDragIndex].width+8;
tabElements[tabDragIndex].el.detach().insertAfter(tabElements[i].el);
}
tabElements[i].el.css({left:tabElements[i].left+"px"});
tabElements.splice(i, 0, tabElements.splice(tabDragIndex, 1)[0]);
tabDragIndex = i;
break;
}
}
// console.log(ui.position.left,ui.offset.left);
},
stop: function(event,ui) {
ul.children().css({position:"relative",left:"",transition:""});
if (!li.hasClass('active')) {
li.css({zIndex:""});
}
updateTabWidths();
if (startDragIndex !== tabDragIndex) {
options.onreorder(originalTabOrder, $.makeArray(ul.children().map(function() { return $(this).data('tabId');})));
}
activateTab(tabElements[tabDragIndex].el.data('tabId'));
}
})
}
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},
removeTab: removeTab,
activateTab: activateTab,
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resize: updateTabWidths,
count: function() {
return ul.find("li.red-ui-tab").size();
},
contains: function(id) {
return ul.find("a[href='#"+id+"']").length > 0;
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},
renameTab: function(id,label) {
tabs[id].label = label;
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var tab = ul.find("a[href='#"+id+"']");
tab.attr("title",label);
tab.find("span").text(label);
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updateTabWidths();
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},
order: function(order) {
var existingTabOrder = $.makeArray(ul.children().map(function() { return $(this).data('tabId');}));
if (existingTabOrder.length !== order.length) {
return
}
var i;
var match = true;
for (i=0;i<order.length;i++) {
if (order[i] !== existingTabOrder[i]) {
match = false;
break;
}
}
if (match) {
return;
}
var existingTabMap = {};
var existingTabs = ul.children().detach().each(function() {
existingTabMap[$(this).data("tabId")] = $(this);
});
for (i=0;i<order.length;i++) {
existingTabMap[order[i]].appendTo(ul);
}
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}
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}
}
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return {
create: createTabs
}
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})();