89 lines
2.7 KiB
QML
89 lines
2.7 KiB
QML
import QtQuick 2.13
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Item {
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id: component
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property alias model: filterModel
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property QtObject sourceModel: undefined
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property string filter: ""
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property int cursorPosition: 0
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property int lastAtPosition: 0
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property string property: ""
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Connections {
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onFilterChanged: invalidateFilter()
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onPropertyChanged: invalidateFilter()
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onSourceModelChanged: invalidateFilter()
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}
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Component.onCompleted: invalidateFilter()
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ListModel {
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id: filterModel
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}
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function invalidateFilter() {
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if (sourceModel === undefined)
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return;
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filterModel.clear();
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if (!isFilteringPropertyOk())
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return
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var length = sourceModel.count
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for (var i = 0; i < length; ++i) {
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var item = sourceModel.get(i);
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if (isAcceptedItem(item)) {
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filterModel.append(item)
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}
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}
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}
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function isAcceptedItem(item) {
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let properties = this.property.split(",")
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.map(p => p.trim())
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.filter(p => !!item[p])
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if (properties.length === 0 || this.filter.length === 0 || this.cursorPosition === 0) {
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return false
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}
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let filter = chatsModel.plainText(this.filter)
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// Prevents suggestions to show up at all
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if (filter.indexOf("@") === -1) {
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return false
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}
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let cursorAtEnd = this.cursorPosition === filter.length;
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let hasAtBeforeCursor = filter.charAt(this.cursorPosition - 1) === "@"
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let hasWhiteSpaceBeforeAt = filter.charAt(this.cursorPosition - 2) === " " || filter.charAt(this.cursorPosition - 2) === "\n"
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let hasWhiteSpaceAfterAt = filter.charAt(this.cursorPosition) === " "
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let hasWhiteSpaceBeforeCursor = filter.charAt(this.cursorPosition - 1) === " "
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if (filter.charAt(this.cursorPosition - 2) === "@" && hasWhiteSpaceBeforeCursor) {
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return false
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}
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if (filter === "@" ||
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(hasAtBeforeCursor && hasWhiteSpaceBeforeAt && hasWhiteSpaceAfterAt) ||
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(this.cursorPosition === 1 && hasAtBeforeCursor && hasWhiteSpaceAfterAt) ||
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(cursorAtEnd && filter.endsWith("@") && hasWhiteSpaceBeforeAt)) {
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this.lastAtPosition = this.cursorPosition - 1;
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return true
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}
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let filterWithoutAt = filter.substring(lastAtPosition + 1, this.cursorPosition)
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filterWithoutAt = filterWithoutAt.replace(/\*/g, "")
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return !properties.every(p => item[p].toLowerCase().match(filterWithoutAt.toLowerCase()) === null)
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}
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function isFilteringPropertyOk() {
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if(this.property === undefined || this.property === "") {
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return false
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}
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return true
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}
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}
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