mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-08-18 19:59:25 +00:00
156 lines
4.1 KiB
JavaScript
156 lines
4.1 KiB
JavaScript
/*\
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title: $:/core/macros/chooser.js
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type: application/javascript
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module-type: macro
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\*/
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(function(){
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/*jslint node: true, browser: true */
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"use strict";
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exports.info = {
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name: "chooser",
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wrapperTag: "div",
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params: {
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},
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events: ["touchstart","touchmove","touchend","mouseover","mousemove","mouseup","mouseout"]
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};
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exports.showChooser = function() {
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if(!this.chooserDisplayed) {
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this.chooserDisplayed = true;
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var nodes = [];
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this.wiki.forEachTiddler("title",function(title,tiddler) {
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nodes.push($tw.Tree.Element("li",{
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"data-link": title
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},[
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$tw.Tree.Text(title)
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]));
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});
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var wrapper = $tw.Tree.Element("ul",{},nodes);
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wrapper.execute(this.parents,this.tiddlerTitle);
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this.children = [wrapper];
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this.children[0].renderInDom(this.domNode);
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}
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};
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/*
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Select the appropriate chooser item given a touch/mouse position in screen coordinates
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*/
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exports.select = function(y) {
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if(this.children.length > 0) {
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var targetIndex = Math.floor(this.children[0].domNode.childNodes.length * (y/window.innerHeight)),
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target = this.children[0].domNode.childNodes[targetIndex];
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if(target) {
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this.deselect();
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this.selectedNode = target;
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$tw.utils.addClass(target,"selected");
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}
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}
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}
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exports.deselect = function() {
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if(this.selectedNode) {
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$tw.utils.removeClass(this.selectedNode,"selected");
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this.selectedNode = null;
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}
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}
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exports.action = function() {
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if(this.selectedNode) {
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var navEvent = document.createEvent("Event");
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navEvent.initEvent("tw-navigate",true,true);
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navEvent.navigateTo = this.selectedNode.getAttribute("data-link");
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this.domNode.dispatchEvent(navEvent);
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}
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}
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/*
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Set the position of the chooser panel within its wrapper given a touch/mouse position in screen coordinates
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*/
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exports.hoverChooser = function(x,y) {
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if(this.chooserDisplayed) {
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// Get the target element that the touch/mouse is over
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this.select(y);
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// Things we need for sizing and positioning the chooser
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var domPanel = this.children[0].domNode,
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heightPanel = domPanel.offsetHeight,
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widthPanel = domPanel.offsetWidth;
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// Position the chooser div to account for scrolling
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this.children[0].domNode.style.top = window.pageYOffset + "px";
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// Scale the panel to fit
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var scaleFactor = window.innerHeight/heightPanel;
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// Scale up as we move right
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var expandFactor = x > 50 ? ((x+150)/200) : 1;
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// Set up the transform
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var scale = scaleFactor * expandFactor,
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translateX = x > 16 ? 0 : -(((16-x)/16) * widthPanel) / scale,
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translateY = (y / scale) - ((y/window.innerHeight) * heightPanel);
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domPanel.style.webkitTransformOrigin =
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domPanel.style.MozTransformOrigin = "0 0";
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domPanel.style.webkitTransform =
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domPanel.style.MozTransform = "scale(" + scale + ") translateX(" + translateX + "px) translateY(" + translateY + "px)";
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}
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}
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exports.hideChooser = function() {
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if(this.chooserDisplayed) {
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this.deselect();
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this.chooserDisplayed = false;
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this.domNode.removeChild(this.children[0].domNode);
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this.children = [];
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}
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}
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exports.handleEvent = function(event) {
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switch(event.type) {
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case "touchstart":
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this.showChooser();
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this.hoverChooser(event.touches[0].clientX,event.touches[0].clientY);
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event.preventDefault();
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return false;
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case "touchmove":
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this.hoverChooser(event.touches[0].clientX,event.touches[0].clientY);
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event.preventDefault();
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return false;
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case "touchend":
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this.action();
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this.hideChooser();
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event.preventDefault();
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return false;
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case "mouseover":
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if(event.target === this.domNode) {
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this.showChooser();
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this.hoverChooser(event.clientX,event.clientY);
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event.preventDefault();
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return false;
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}
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break;
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case "mousemove":
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this.hoverChooser(event.clientX,event.clientY);
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event.preventDefault();
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return false;
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case "mouseup":
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this.action();
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this.hideChooser();
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event.preventDefault();
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return false;
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case "mouseout":
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if(!$tw.utils.domContains(this.domNode,event.relatedTarget)) {
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this.hideChooser();
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event.preventDefault();
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return false;
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}
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break;
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}
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return true;
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};
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exports.executeMacro = function() {
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this.chooserDisplayed = false;
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return [];
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};
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})();
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